巴西专利BR112012014009B1 excavator wear set and wear element

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专利摘要:
Excavator wear set. a wear assembly having an adapter with a locking part being disclosed. the locking part has a transverse dimension. The wear assembly also has a removable wear member on the adapter. the wear member has a body with a hollow cavity and the hollow cavity is adapted to receive the socket portion of the adapter. The wear member also has a pair of mounting ears extending from the body. each of the mounting ears has a transverse dimension. The transverse dimension of each mounting ear is in the range of 0.25 to 0.4 of the transverse dimension of the socket.
公开号:BR112012014009B1
申请号:R112012014009-4
申请日:2010-12-13
公开日:2019-10-29
发明作者:Lilley Bruce；Guimaraes Miguel；Nienaber Quintin；Young Tony
申请人:Cqms Pty Ltd；
IPC主号:

专利说明:

EXCAVATOR WEAR SET AND WEAR ELEMENT
FIELD OF THE INVENTION
The invention relates to an excavator wear element. In particular, although not exclusively, the invention concerns an excavator tooth and an adapter.
BACKGROUND OF THE INVENTION
Excavator tooth assemblies placed on the excavation edge of excavator buckets and others more generally comprise a replaceable excavation tooth, an adapter body and an adapter tip that is fastened by welding or something like the edge of digging a bucket or something. The tooth generally has a recess such as a cavity at its rear end to receive a front protrusion part of the adapter tip in a receptive manner and a generally removable locking pin is employed to reliably secure the tooth to the adapter.
In use, excavator teeth are subjected to extensive loading forces along a longitudinal geometric axis of a tooth as well as in the vertical and transverse directions. A tight fit is required between the excavation point and the front part of the adapter and also between the adapter fit and the tip protrusion part and their respective mounting pins to prevent premature wear between components. As the various components wear out, the locking pins can loosen thereby increasing the risk of losing an excavation point or an adapter / total tooth combination. This
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2/31 requires considerable downtime to replace lost wear elements, and where items such as locking pins are not recovered they can cause damage and / or additional downtime in downstream operations such as ore crushing and more.
The largest loads supported by excavator tooth assemblies are vertical loads that tend to generate large moment forces capable of rotating a tooth out of the front of an adapter and / or rotating the adapter out of the adapter tip. Furthermore, torsion or “change of direction” loads are often imposed on such tooth assemblies.
Despite many prior art attempts to improve the assembly of a wear element for an excavator tip, many of these proposals suffer from one or more deficiencies. As described below, many of the foregoing concerns the direct mounting of a tooth on a tip without an intermediate adapter, but in these sets, the mounting system for attaching teeth directly to excavator tips is considered analogous to the assembly of a tooth on an adapter.
United States Patent No. 4,182,058 describes an excavator tooth having a divergent tapering fit backwards to receive a tip having a complementarily shaped front protrusion part. Resistance to the forces of rotational moments is produced by an elastic steel cotter pin extending through vertical holes aligned in the groove and protrusion parts.
United States patents 3,774,324, 4,338,736,
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3/31
4,481,728, 4,903,420, 5,469,648, 7,100,315 and 6,735,890 describe combinations of tip and tooth in which the tip has a protruding protruding part generally converging with a front tip having a similar configuration the box with at least the upper and lower surfaces of it having faces parallel to each other and to a longitudinal geometric axis of the tip part. With the exception of patent 4,338,736, which describes a transverse locking pin, each of the tooth mounting arrangements is very dependent on a large vertical locking pin to resist the forces of rotational moments tending to rotate the teeth outward respective tips.
United States Patent No. 4,231,173 describes a tapered adapter tip having a box-like free end, which engages with a matching box similar to a wedding box to withstand rotational moments. Opposite pairs of tabs extending to the rear fit corresponding recesses on the outer surfaces of the adapter tip to resist rotational movements. Because the tongues themselves are not supported, they have a limited capacity to withstand the forces of rotational moments.
United States Patent No. 5,272,824 describes a structure similar to that of United States Patent No. 4,231,173 except that the side tongues are larger and the upper and lower tongues are formed as box-like elements with holes to receive a vertical mounting pin through openings
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4/31 aligned on the tooth and adapter tip.
United States Patent No. 4,404,760 provides flat rail surfaces at the adapter tip for fitting with matching grooves in the matching opening of a corresponding tooth, where the matching rail and groove surfaces are generally parallel to the longitudinal geometric axis of the tooth.
United States Patent No. 5,423,138 describes a generally tapered tip having a box-like front end with upper and lower transverse surfaces generally parallel to a longitudinal geometric axis of a tooth that is located directly over it . The parallel upper and lower transverse surfaces are contiguous to upper and lower rail surfaces on each side of the tip and parallel to the longitudinal geometric axis of the tooth. A pair of lateral tongues extending backwards are located in recesses formed on the external lateral faces of the tip, ostensibly to resist the forces of rotational moments in the tooth. Because the side tabs are lowered to accommodate the side rail parts, the robustness of the side tabs is somewhat compromised.
United States Patent No. 4,233,761 describes a reasonably short and thick tapered tip having a box-like front with upper and lower surfaces generally parallel to a longitudinal geometry axis of an excavator tooth, a tapering intermediate part diverging back and a rear having top and bottom surfaces if
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5/31 extending generally parallel to a longitudinal geometric axis of the tooth. On the upper and lower surfaces of the front, middle and rear of the tip, spaced parallel reinforcement ribs are formed which are located in matching grooves in the excavator tooth. A large vertical locking pin extends through openings aligned in the tooth and tip between the reinforcement ribs. This structure is very dependent on the locking pin to resist forces of rotational moments, however it is considered that this configuration may be prone to failure at the rear of the adapter.
United States Patent No. 5,709,043 describes a tip / adapter combination in which the adapter socket tapers convergingly towards a box-like front part having upper and lower support surfaces generally parallel to a geometric axis longitudinal tooth, a front transverse vertical support surface and diverging back support surfaces formed at obtuse angles between the converging upper and lower walls and the side walls of the socket, ostensibly to avoid areas of stress concentration.
United States Patent No. 6,018,896 describes a pin / retainer system for locking a digging tooth in an adapter, in which the retainer is inserted into the adapter and a wedge-shaped pin is pushed into aligned openings in the tooth and adapter for elasticity fitting with the retainer.
United States publication US 2002 / 0000053A1 describes
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6/31 a mechanism for releasably retaining an adapter at the end of a bucket edge or the like, in which a tapered threaded fitting is located non-rotatably inside an opening in the side wall of the adapter. A threaded retaining pin extends through the threaded fitting and is located in an opening aligned on the bucket tip.
United States Patent No. 5,337,495 describes a tooth assembly with a two-piece telescopic insertable adapter attached to a tip with a tapered wedge pin assembly. A similar mounting system is described in United States patent No.5.172.501 and United States patent No.6.052.927. Other retaining systems for digging points on adapters or on adapter tips are described in United States Patent Nos. 6,119,378, 6,467,204 and 6,467,203.
Other devices for removably securing replaceable wear elements in earthwork equipment such as a retaining pin, a screw, a pin lock and locking blocks that can be inserted into an upper opening in a wear element are described in the United States patents. United Nos. 3,839,805, 3,982,339, 4,587,751, 5,088,214 and 5,653,048 respectively.
United States Patent No. 5,937,550 describes a locking assembly for releasably attaching an adapter to a tip of an excavator support structure. The locking assembly comprises a body and a base coupled together and adapted for insertion, while coupled together, in a hole in the tip of the
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7/31 support structure. The length of the locking assembly is extended to secure the adapter and is retracted to release the adapter. Although suitable for attaching an adapter to a tip of an excavator support structure, the lock described in this patent is relatively complex in design and operation resulting in high costs and labor-intensive extraction procedures in the field.
Canadian Patent Application No. 2,161,505 describes a system for removably retaining an excavation point on an adapter with at least one flanged sleeve having a screw threaded opening in it, the flanged sleeve being located non-rotatable on a cross hole in the adapter before the point fitting on the adapter. A screw threaded pin is inserted into the sleeve through an opening at the point through which part of the pin head retains the point on the adapter.
Australian Patent Application No. 2003264586 describes a locking pin assembly comprising a body element having a non-circular cross-sectional shape located in a complementary-shaped hole extending laterally between opposite sides of an excavator edge mounting tip. After locating the body element in the tip opening, an adapter can be fitted over the tip with openings in opposite side walls aligned with the body element. Threaded screws fit into threaded openings at opposite ends of the body element, each of the screws having a tapered stem part with an enlarged boss at a free end of the same, the boss being located in
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8/31 a respective opening in a side wall of said adapter to prevent the adapter from disengaging from the tip.
Although generally satisfactory for the intended purpose, everyone in the prior art mentioned above suffers from one or more deficiencies or disadvantages in terms of inadequate resistance to the rotation of a tooth out of a tip or an adapter under the influence of vertical loads applying a rotational moment to the tooth, a predisposition for premature wear, difficulties in retaining the teeth on tips or adapters, inadequate locking systems and improperly complicated configurations resulting in increased manufacturing costs.
In addition, the prior art generally relies on locking assemblies that require threaded components. Threaded components in locking assemblies are generally disadvantageous since garbage and fines can infiltrate the threaded assembly thus causing cementation and resulting in difficulties in removal.
OBJECTIVE OF THE INVENTION
It is an objective of the invention to overcome or at least alleviate one or more of the problems mentioned above and / or provide the consumer with a useful or commercial choice.
DISCLOSURE OF THE INVENTION
In one form, although it need not be the only or in fact the broadest form, the invention consists of an excavator wear set comprising:
an adapter having a protrusion part, the protrusion part having a transverse dimension;
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9/31 a wearable element mountable so that it can be released on the adapter, the wearable element having a body with a locking cavity, the locking cavity adapted to receive the protruding part of the adapter, the wear element additionally including a pair of mounting ears extending from the body, each of the mounting ears having a transverse dimension;
wherein the transverse dimension of each mounting ear is in the range of 0.25 to 0.4 of the transverse dimension of the protruding part.
More preferably, the transverse dimension of each mounting ear is in the range of 0.26 to 0.39 of the transverse dimension of the protrusion part.
More preferably, the transverse dimension of each mounting ear is in the range of 0.27 to 0.38 of the transverse dimension of the protrusion part.
More preferably, the transverse dimension of each mounting ear is in the range of 0.28 to 0.37 of the transverse dimension of the protrusion part.
More preferably, the transverse dimension of each mounting ear is in the range of 0.29 to 0.36 of the transverse dimension of the protrusion part.
More preferably, the transverse dimension of each mounting ear is in the range of 0.3 to 0.35 of the transverse dimension of the protrusion part.
More preferably, the transverse dimension of each mounting ear is in the range of 0.31 to 0.34 of the transverse dimension of the protrusion part.
More preferably, the cross-sectional dimension of each mounting ear is 0.32 of the cross-sectional dimension of the
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10/31 overhang.
More preferably, dimension transversal in each ear of assembly is 0.33 of dimension transversal gives part overhang. More preferably, dimension transversal in each
Mounting ear is one third of the transverse dimension of the protruding part.
Suitably, the transverse dimension of each mounting ear is a distance from an external face of the respective mounting ear to an internal face thereof.
Suitably, the inner face of each mounting ear is adapted to oppose and fit with a respective side wall of the protruding part of the adapter.
Suitably, the transverse dimension of the protruding part is a distance between opposite side walls thereof.
Typically, the wear element is a digging tooth.
In an additional form of the excavator wear assembly, the wear element comprising:
a body with a groove, the groove having a transverse dimension;
a pair of ears of assembly if extending of the body, each of fitting ears having a dimension transversal; and where the dimension transversal decade ear of assembly is in the range of 0.25 0.4 dimension transversal cavity fitting.
More preferably, the cross-sectional dimension of each
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11/31 mounting ear is on the 0.26 to 0.39 of the dimension cross section of the fitting. Most Preferably, the transversal dimension of each mounting ear is on the 0.27 to 0.38 of the dimension cross section of the fitting. More preferably, the transversal dimension of each mounting ear is on the 0.28 to 0.37 of the dimension cross section of the fitting. More preferably, the transversal dimension of each mounting ear is on the 0.29 to 0.36 of the dimension cross section of the fitting. More preferably, the transversal dimension of each mounting ear is on the range of 0.3 to 0.35 of the dimension cross section of the fitting. More preferably, the transversal dimension of each mounting ear is on the range from 0.31 to 0.34 of the dimension cross section of the fitting. More preferably, the transversal dimension of each
mounting ear is 0.32 of the transverse dimension of the socket cavity.
More preferably, the transversal dimension of each
mounting ear is 0.33 of the transverse dimension of the socket cavity.
More preferably, the transversal dimension of each
Mounting ear is one third of the transverse dimension of the socket.
Suitably, the transverse dimension of the socket is a distance between an inner face of the first mounting ear of the pair of mounting ears and an inner face of the second mounting ear of the pair of mounting ears.
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12/31 assembly.
Suitably, the transverse dimension of each mounting ear is a distance from an external face of the respective mounting ear to an internal face thereof.
Additional features of the present invention will become apparent from the detailed description below.
BRIEF DESCRIPTION OF THE DRAWINGS
To help understand the invention and to enable those skilled in the art to put the invention into practical operation, preferred embodiments of the invention will be described only by way of example with reference to the accompanying drawings, in which:
Figure 1A shows a perspective view of an excavator wear assembly according to an embodiment of the invention;
Figure 1B shows an exploded perspective view of the excavator wear assembly shown in figure 1A;
Figure 2A shows an inverted perspective view of a tooth forming part of the excavator wear set shown in Figure 1A;
Figure 2B shows a rear perspective view of the tooth shown in figure 2A.
Figure 2C shows a sectional perspective view of the tooth shown in figure 2A;
Figure 3A shows a perspective view of a locking assembly shown in Figure 1A;
Figure 3B shows an exploded perspective view of the locking assembly shown in figure 3A;
Figure 4A shows a bottom face view in
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13/31 perspective of a retaining element forming part of the locking assembly shown in figure 3A;
Figure 4B shows a top perspective view of the retaining element shown in figure 4A;
Figure 5 shows a perspective view of a retainer forming part of the locking assembly shown in Figure 3A;
Figure 6A shows a sectional perspective view of components of the locking assembly shown in Figure 3A;
Figure 6B shows a cross-sectional perspective view of components of the locking assembly shown in Figure 3A;
Figure 7A shows a side perspective view of components of the locking assembly shown in Figure 3A located within a tooth;
Figure 7B shows a rear perspective view of the view shown in Figure 7A;
Figure 7C shows a top sectional view of the view shown in figure 7A;
Figure 8A shows a sectional perspective view of the tooth placed on the adapter;
Figure 8B shows a top sectional view of the tooth placed on the adapter;
Figure 9A shows the locking pin forming part of the locking assembly placed through the openings aligned in the tooth and passage in the adapter, the locking pin installed in the locked position;
Figure 9B shows a sectional view of the locking assembly in the locked position;
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Figure 10A shows a top sectional view of the locking assembly in the locked position with a retainer associated therewith;
Figure 10B shows a perspective view of the excavator wear assembly shown in figure 1A;
Figure 11A shows an upper section view of an excavator wear assembly according to a further aspect of the invention; and
Figure 11B shows a side view of the excavator wear assembly shown in figure 11A with a wear element forming part of the excavator wear assembly shown in imaginary lines.
DETAILED DESCRIPTION OF THE INVENTION
The excavator wear set and locking set are therefore described with reference to an excavator wear element in the form of a tooth releasably attached to an adapter. The adapter in turn is attached to one end of an excavator bucket or the like. Those skilled in the art will realize that the invention can be employed to releasably attach an adapter to a tip or a tooth directly to a tip of an excavator bucket edge.
Beyond addition, the set locking can to be used in other applications such as a pin in retention for components in set of cables in excavator drag line and others more.
Figure 1A shows a perspective view of an excavator wear assembly 1000 according to an embodiment of the invention. Figure 1B shows an exploded perspective view of the
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15/31 excavator 1000. The excavator wear set 1000 comprises a wear element in the form of a tooth 1100 mountable on an adapter 1200 and a locking assembly 1300 adapted to releasably secure tooth 1100 on adapter 1200, such as will be discussed in more detail below.
Adapter 1200 is properly configured for mounting on an excavator's excavating edge by means of an adapter socket 1210. The adapter's 1210 insert is realized in a complementary form with a tip of an excavator's excavating edge (not shown) .
Adapter 1200 has aligned cross holes 1221, each extending through and a respective opposite side wall 1220. The aligned cross holes 1221 are adapted to receive an adapter retaining pin (not shown) that extends through the aligned cross holes 1221 and an adapter retaining pin pass through the complementarily shaped end (not shown) to thereby retain adapter 1200 on the excavator's excavation edge.
In addition, adapter 1200 has a pair of side wall mounting recesses 1203 and 1204 located at a front of the respective opposite side wall 1220.
Adapter 1200 additionally includes a protruding portion 1230 extending from a front part thereof. The protruding portion 1230 has the upper and lower converging rear support surfaces 1231, 1232 that terminate at the front supporting surfaces
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16/31 substantially parallel upper and lower 1233, 1234 respectively. A front support face 1235 is arranged between the upper front support surface 1233 and the lower front support surface 1234.
The protruding part 1230 also has a retaining passage 1237 extending through it between the opposite side walls 1236 thereof.
Figure 2A shows an inverted perspective view of the wear element in the form of tooth 1100. Figure 2B shows a rear perspective view of tooth 1100 and Figure 2C shows a sectional view in perspective of tooth 1100.
The tooth 1100 has a working end projecting forward 1101 and a socket cavity 1110 formed by the upper and lower converging rear support surfaces 1111 and 1112 respectively. The upper and lower support surfaces 1111 and 1112 each end on the substantially parallel upper and lower front support surfaces 1113 and 1114 respectively. A front support face 1115 is arranged between the upper front support surface 1113 and the lower front support surface 1114.
The support surfaces 1111, 1112, 1113 and 1114 and the front support face 1115 of the tooth socket 1110 are configured to be complementary to the support surfaces 1231, 1232, 1233 and 1234 and the front support face 1235, respectively, of the protrusion part 1230 of adapter 1200. The socket cavity 1110 is adapted to receive protrusion part 1230 of adapter 1200.
Tooth 1100 additionally includes the ears of
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17/31 assembly 1103 and 1104 extending behind the tooth body 1102 on opposite sides thereof. In use, the mounting ears 1103 and 1104 are adapted to be placed within the mounting recesses 1203 and 1204, respectively, of the adapter 1200.
Additionally, a tip hole 1130 extends through mounting ear 1103 and a locking opening 1120 extends through opposite mounting ear 1104, as shown. In use, the tip hole 1130 and the lock opening 1120 are adapted to align at least partially with the retention passage 1237 of adapter 1200.
The tip hole 1130 is generally circular in cross section and extends through the mounting ear 1103 as shown.
The locking opening 1120 extends through the mounting ear 1104 and is formed by a receiving passage 1121 and a retaining recess 1125. Optionally, the locking opening 1120 can extend through any wall of the tooth 1100.
Receiving passage 1121 extends inwardly from an external face of tooth 1100 and terminates at retaining recess 1125 located on an internal face of mounting ear 1104.
The receiving passage 1121 has a main part of a generally circular shape 1122 and a pair of slots 1123 extending outwards from diametrically opposite sides thereof.
The retaining recess 1125 has a main part of a generally circular shape 1126 and a slot with a single outlet
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1127 extending outwardly from the main circular portion 1126. The main circular portion 1126 of the retaining recess 1125 is concentric with the circular main portion 1122 of the receiving passage 1121 with the circular main portion 1126 having a relatively larger diameter, thus forming a locking face 1128 at an inner end of the retaining recess 1125.
Similarly, the groove with a single outlet 1127 generally corresponds to one of the grooves 1123 of the receiving passage 1123, with the groove with a single outlet 1127 having a relatively larger cross-sectional area than that of each of the grooves 1123 .
Figure 3A shows a perspective view of the locking assembly 1300 in a locked position and Figure 3B shows an exploded view in perspective of the locking assembly 1300.
The locking assembly 1300 comprises a locking pin 1310, a locking element 1320, a retaining element 1330, a retainer 1340 and a compression washer 1350. The locking assembly further comprises a pair of washers 1301, 1302 adapted to be against opposite faces of the predisposition element 1320.
Locking pin 1310 has a main part 1312 and a pair of pins 1311 extending out of main part 1312 at one end thereof on diametrically opposite sides thereof. The pins 1311 are adapted to be received in the respective slots 1123 of the receiving passage 1121, as will be discussed in more detail below.
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Locking pin 1310 also has a tip portion 1313 extending from one end of main part 1312 distal to pins 1311. Locking pin 1310 additionally comprises a recess 1314 (not shown in figure 3A or 3B) located at one end of the even adjacent to pins 1311.
The compression washer 1350 is placed securely against the tip part 1313 adjacent to the main part 1312.
The tip part 1313 is adapted to be placed in the tip hole 1130 of tooth 1100, as will be discussed in more detail below.
The predisposition element 1320 is generally circular in shape and has an opening 1321 extending through it. The predisposition element 1320 is formed of an elastically deformable plastic or the like and is adapted to be placed around the main part 1312 of the locking pin 1310. The predisposition element 1320 additionally includes an annular ridge 1322 extending circumferentially around an external surface of the same.
In use, washers 1301, 1302 adapted to stand against opposite faces of the predisposition element 1320 in such a way that washer 1302 pushes against a surface
internal decade pin 1311 when the set locking it's in position locked. THE figure 4A shows a face view bottom in perspective of retaining element 1330 and The figure 4B show a top perspective view of the element in
retention 1330.
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The retaining element has a body 1331 formed of a generally flat circular upper surface 1332 having an opening 1332A and an annular wall 1333 extending below the upper surface 1332, thus forming a cavity 1334 adapted to locate the predisposing element 1320 in it, as will be discussed further below. A holder 1335 extends outside the body 1331 as shown. The body 1331 is adapted to be received in the main circular part 1126 of the retaining recess 1125 and the holder 1335 is adapted to be received in the slot with a single outlet 1127 of the retaining recess 1125.
The retaining element 1330 further includes an annular valley 1337 extending circumferentially around an inner face of the annular wall 1333, as shown.
A pair of slots 1336 is located on the upper surface 1332 in such a way that slots 1336 are diametrically opposed on the upper surface 1332. Slots 1336 are adapted to receive pins 1311 of locking pin 1310.
A pair of seats 1338 is located on diametrically opposite sides of an underside of the upper surface 1332 as shown. Each seat 1338 is adapted to locate a pin 1311 of locking pin 1310 when locking assembly 1300 is in the locked position.
The retaining element 1330 additionally includes several angled guiding surfaces 1339 on a lower face of the upper surface 1332, with each
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21/31 angled guide surface 1339 extending from a respective slot 1336 to a region 1339A in such a way that each region 1339A is disposed between a respective angled guide surface 1339 and a seat 1338.
Suitably, each seat 1338 is displaced axially from a slot 1336. Preferably, each seat is displaced axially by 90 degrees from each slot 1336.
Figure 5 shows a perspective view of the retainer 1340 forming part of the locking assembly 1300.
The retainer 1340 has an upper part of a generally circular shape 1341 and a pair of legs 1342 extending from diametrically opposite sides of the upper part 1341. Each leg 1342 is adapted to be received in a slot 1123 of the receiving passage 1121 of tooth 1100 and terminate in a respective slot 1335 of the retaining element 1330 when the locking assembly 1300 is in the locked position.
The retainer 1340 additionally includes a plug 1343 extending from a central region of a lower face of the upper part 1341. The plug 1343 is adapted to be securely placed within the recess 1314 of the locking pin 1310.
The locking set 1300 is adapted to releasably secure the tooth 1100 to the adapter 1200.
Figure 6A shows a sectional view of the washers 1301, 1302 and the predisposing element 1320 placed within the cavity 1334 of the retaining element 1330 and figure 6B shows a cross-sectional view of this arrangement.
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As shown, the annular ridge 1322 of the predisposition element 1320 is placed within the annular valley 1337 of the retention element 1330 in such a way that the predisposition element 1320 is located securely within cavity 1334.
In a preferred mode, the washers 1301, 1302 are trapped so no removable the faces opposite of element of predisposition 1320 through a adhesive or
something like that.
In an optional embodiment, the predisposition element 1320 can be permanently trapped within the cavity 1334 of the retention element 1330 by means of a chemical fastener or the like.
The retaining element 1330 is then placed within the retaining recess 1125 of the locking opening 1120 of the tooth 1100 as shown in figures 7A, 7B and 7C.
In this position, the holder 1335 is located inside the slot with a single outlet 1127, thus not rotatingly locating the retaining element 1330 within the retaining recess 1125. In addition, the upper surface 1332 of the retaining element 1330 is in contact with the locking face 1128 as shown.
In addition, the slots 1336 of the retaining element 1330 align and correspond to the slots 1123 of the receiving passage 1121 of the tooth 1100 as shown.
In an optional embodiment, the retaining element 1330 can be permanently trapped within the retaining recess of the tooth lock opening 1120 by means of a chemical fastener or the like in such a way that the tooth 1100 is provided in the arrangement as shown
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23/31 in figures 7A to 7C. Alternatively, the retaining element 1330 can be integrally formed with the tooth 1100.
The tooth 1100 is then slidably mounted on the adapter 1200 in such a way that the projection portion 1230 is located within the socket cavity 1110 of the tooth 1100, as discussed above and as shown in figure 8A and figure 8B.
In this position, the retaining element 1330 is held captively in the retaining recess 1124 of the tooth 1100 because the retaining recess 1124 is coaxial with the retaining passage 1237 of the adapter 1200. In this way, both an outer face of the washer 1301 and a lower face of the annular wall 1333 of the retaining element 1330 contact an external face of the side wall 1236 of the protrusion part 1230 to thereby captively retain the retaining element 1330 in the retaining recess 1124 as shown.
The retaining pin 1310 of the locking assembly 1300 is then placed through the locking opening 1120, the retaining passage 1237 and the hole for the tip 1120 at least partially aligned, as shown in figure 9A, in order to place the locking assembly. lock 1300 in the locked position to reliably retain tooth 1100 in adapter 1200. Figure 9B shows a perspective sectional view of locking assembly 1300 in the locked position with adapter 1200 and tooth 1100 removed from view for clarity.
The tip portion 1313 of the locking pin 1310 is first placed through the locking opening 1120 of the
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24/31 tooth 1100. The tip part 1313 moves through the receiving passage 1121 of the locking opening 1120, the aligned openings 1332A of the retaining element and 1321 of the predisposing element 1320 and into the retaining passage 1237 of the part protrusion 1230 of adapter 1200.
In this position, or before insertion, the locking pin is rotated axially around a longitudinal geometric axis in such a way that the pins 1311 are generally coplanar with a plane formed by the slots 1336 of the retaining element 1330 and the slots 1123 of the receiving passage 1121 of the tooth 1100 aligned.
In this orientation of the locking pin 1310, the pins 1311 are received in the respective slots 1336 and 1123 aligned as the locking pin 1310 is further translated into the retaining passage until one face of each pin 1311 contacts an external face of the washer 1302. At this insertion stage, the tip portion 1313 is located inside the tip hole 1130 of tooth 1100 as shown.
In this position, the locking set 1300 is in the insertion position. In order to move the locking assembly to the locked position as shown in figures 9A and 9B, the locking pin 1310 is rotated axially around a longitudinal geometric axis thereof in order to move each pin 1311 away from a respective slot 1336 into a respective seat 1338 of the retaining element 1300.
Each 1311 pin has a diameter that is larger in length
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25/31 than a length between an outer face of washer 1302 and an inner surface of region 1339A. As such, as locking pin 1310 is rotated axially, one face of each pin 1311 is driven to contact one face of a respective angled guide surface 1339 while an opposite face of each pin 1311 remains in contact with an outer face of washer 1302.
As previously discussed, the bias element 1200 is formed of an elastically deformable material in such a way that as the locking pin 1310 is rotated axially and each pin 1311 moves against a respective angled guide surface 1339, the bending element predisposition 1320 is thus compressed.
When a face of each pin 1311 pushes against a face of a respective region 1339A, the predisposition element is in full compression. As locking pin 1310 continues to be rotated axially, one face of each pin 1311 is driven by the compressive force of the
element predisposition 1320 for inside in an respective seat 1338.In this position, one face decade pin 1311 is retained in contact fi rme with one face from headquarters 1338 for a force in
predisposition provided by the predisposition element 1320 in order to captively retain the locking pin 1310 within the locking opening 1120, the retaining passage 1237 and the hole for the tip 1120 partially aligned as shown.
Suitably, a powered tool is used to
Petition 870190071903, of 7/26/2019, p. 35/49
26/31 axially rotate the locking pin 1310 in such a way that sufficient force is used to overcome the biasing force of the biasing element 1320. In addition, the locking pin can be rotated in either axial direction in order to move the locking assembly 1300 to the locked position from the insertion position.
In the locked position, the compression washer 1350 extends around the ferrule part 1313 within the retaining passage 1237 or the adapter 1200 adjacent to the ferrule orifice 1130 in order to prevent the entry of fines and more into it.
The retainer 1340 is then placed inside the locking opening 1120 as shown in figure 10A and figure 10B. Plug 1343 is placed inside recess 1314 by means of an interference fit so that retainer 1340 is attached to locking pin 1310. In addition, legs 1342 extend through slots 1123 in an external extension thereof and end within the cavity 1334 of the retaining element 1330.
In this way, the location of the legs 1342 ensures that the locking pin 1310 cannot rotate to a position
of such way that pins stay in alignment with the rips 1336 at the case on what the pin locking 1310 is submitted from a big ones loads rotational during use. O
retainer 1340 also prevents the entry of fines and more into the 1120 locking opening.
In order to move the locking assembly 1300 to the insertion position, the retainer 1340 is removed and the locking pin 1310 is properly rotated so that the pins 1311 align with the respective slots 1336 and 1123
Petition 870190071903, of 7/26/2019, p. 36/49
27/31 aligned so that locking pin 1310 can be removed to remove tooth 1100 from adapter 1200.
In an additional form, the invention consists of an unprecedented tooth and adapter.
Figure 11A shows a top section view of an excavator wear assembly 1000 according to a further aspect of the invention. Figure 11B shows a side view of the excavator wear set 1000 with a tooth element 1100 forming part of the excavator wear set 1000 shown in imaginary lines.
The features of the wear element in the shape of tooth 1100 and adapter 1200 are as discussed above. However, each of the tooth 1100 and adapter 1200 has transverse dimensions which are particularly advantageous when tooth 1100 is loaded when mounted on adapter 1200 as discussed below.
As discussed earlier, the protruding portion 1230 of the adapter 1200 is adapted to be received within the socket cavity 1110 of the tooth 1100. In this position, the mounting ears 1103 and 1104 are located within the respective mounting recesses 1203 and 1204.
A pin 1300 is placed through the aligned openings 1120 and 1130 in the respective mounting ears 1103 and 1104 of the tooth 1100 and the retaining passage 1237 through the protruding part 1230 of the adapter 1200 in order to releasably secure the tooth 1100 to the adapter 1200 .
In use, an end extension of the 1230 overhang
Petition 870190071903, of 7/26/2019, p. 37/49
28/31 is subject to point loads L as shown in figure 11B. The load L is transferred around the geometric axis of the locking pin 1300 in such a way that one face of each mounting ear 1103, 1104 transfers a force CL to one face of the respective mounting recesses 1203, 1204.
A loading scenario of this nature places a great strain on the mounting ears 1103, 1104 giving rise to the possibility that the ears 1103, 1104 may fail through cracking and more. The possible consequence of having a mounting ear crack 1103, 1104 is that tooth 1100 may prematurely detach from adapter 1200. There are undesirable health and safety issues associated with a tooth prematurely detaching from adapter during use.
The inventors have found that by having an adapter 1200 that has a protrusion 1230 having a transverse dimension, particularly a width B, which is relatively smaller than the protrusion width of prior art adapters and having a tooth 1100 having mounting ears 1103, 1104, in which each has a transverse dimension, in particular a width A, which is relatively greater than the width of prior art assembly ears, premature tooth disengagement as a result of failure of the assembly ears is mitigated.
By having a mounting ear 1103, 1104 that has a face having the dimension of width A, a larger contact face is formed with a face of a respective mounting recess 1203, 1204 to support the counter load CL and consequently mitigate the risk crack in the ear of
Petition 870190071903, of 7/26/2019, p. 38/49
29/31 assembly 1103, 1104.
In particular, the inventors found that having a cross-A ratio of each mounting ear
1103, 1104 for the transverse dimension B of the protruding part 1230 in the range 0.25 to 0.4 is particularly advantageous for mitigating failure in the mounting ears 1103,
1104.
In particular, the inventors found that having a cross-A ratio of each mounting ear
1103, 1104 for the transverse dimension B of the protruding part 1230 being 0.25, 0.26, 0.27, 0.28, 0.29, 0.30, 0.31, 0.32, 0.33, 0.34, 0.35, 0.36, 0.37, 0.38, 0.39 or 0.40 is particularly advantageous for mitigating failure in mounting ears 1103, 1104.
The inventors have found that a transverse dimension A of each mounting ear 1103, 1104 being one third of the transverse dimension B of the protruding part 1230 is very advantageous for mitigating failure in the mounting ears 1103,
1104.
As discussed earlier, the protruding portion 1230 of the adapter is adapted to be located within the socket cavity 1110 of the tooth 1100. As such, the transverse dimension A in the form of the width of each mounting ear 1103, 1104 in a similar manner can be expressed with reference to a transverse dimension, in the form of a width B, of the socket cavity 1110. Suitably, the width B of the socket cavity 1110 is the distance between an inner face of the mounting ear 1103 and an inner face of the ear mounting 1104.
As such, the ratio of the transversal dimension A of each
Petition 870190071903, of 7/26/2019, p. 39/49
30/31 mounting ear 1103, 1104 for the transverse dimension B of the socket cavity 1110 being in the range 0.25 to 0.4 has been found to be particularly advantageous for mitigating failure in the mounting ears 1103, 1104.
A ratio of the transverse dimension A of each ear of
Assembly 1103, 1104 for the dimension transversal B da cavity plug-in 1110 being 0.25, 0.26, 0.27, 0.28, 0.29, 0, 30, 0.31, 0.32 , 0.33, 0.34, 0.35, 0.36, 0.37, 0.38,
0.39 or 0.40 has been found to be particularly advantageous for mitigating failure in mounting ears 1103, 1104.
The inventors have found that a transverse dimension A of each mounting ear 1103, 1104 being one-third of the transverse dimension B of the socket cavity 1110 as being very advantageous for mitigating failure in the mounting ears 1103, 1104.
When having a mounting ear that has a face having a transverse dimension, in the form of width A, defined as a ratio of a transverse dimension of the protruding part 1230 or the socket cavity 1110, in the form of width B, a greater face contact is formed to withstand the counter load CL and consequently mitigate the risk of cracking in the mounting ear.
The excavator wear set of the invention and the locking set for attaching the toothed wear element to an adapter avoids the need for threaded components and complex parts. In addition, the locking assembly avoids the need for heavy hammers and more for mounting within the respective retaining openings and retaining cavities. That way,
Petition 870190071903, of 7/26/2019, p. 40/49
31/31 the invention provides an effective method of releasably securing the tooth to the adapter.
Throughout the specification, the objective was to describe the invention without limiting the invention to any specific modality or set of resources. However, persons qualified in the relevant technique can make variations from the specific modalities that will be included in the scope of the invention.
It will be appreciated that several other changes and modifications can be made to the described modality without departing from the spirit and scope of the invention.
In this specification, where different modalities share identical resources, common reference numbers are used to identify these 15 identical resources.

权利要求:
Claims (28)
[1]
1. Excavator wear assembly comprising:
an adapter (1200) having a protrusion part (1230), the protrusion part having a transverse dimension (B);
a wearable element mountable so that it can be released on the adapter (1200), the wearable element having a body (1102) with a groove (1110), the groove adapted to receive the protruding part (1230) from the adapter (1200), the wear element additionally including a pair of mounting ears (1103, 1104) extending from the body (1102), each of the mounting ears (1103, 1104) having a transverse dimension (A);
characterized by the fact that each of the mounting ears (1103, 1104) also having an upper face and a lower face that are arranged in such a way that both the upper and lower faces are aligned to converge;
wherein the transverse dimension (A) of each mounting ear (1103, 1104) is in the range of 0.25 to 0.4 of the transverse dimension (B) of the protrusion part (1230), and the protrusion part (1230 ) has a top and bottom rear support surface (1231, 1232), and a top and bottom front support surface (1233, 1234), the top rear support surface (1231) and the top front support surface (1233) the rear and front parts, respectively, of a single slightly curved upper surface of the protruding part, the lower rear support surface (1232) and the lower front support surface (1234) being the
Petition 870190071903, of 7/26/2019, p. 42/49
[2]
2/7 rear and front parts, respectively, of a single slightly curved lower surface of the projection part (1230), and at the rear of the projection part (1230) the upper and lower rear support surfaces (1231, 1232) converge in a forward direction.
2. Excavator wear set according to claim 1, characterized by the fact that the transverse dimension (A) of each mounting ear (1103, 1104) is in the range of 0.26 to 0.39 of the transverse dimension (B) of the projection part (1230).
[3]
3. Excavator wear set, according to claim 1, characterized by the fact that the transverse dimension (A) of each mounting ear (1103, 1104) is in the range of 0.27 to 0.38 of the transverse dimension (B) of the projection part (1230).
[4]
4. Excavator wear set, according to claim 1, characterized by the fact that the transverse dimension (A) of each mounting ear (1103, 1104) is in the range of 0.28 to 0.37 of the transverse dimension (B) of the projection part (1230).
[5]
5. Excavator wear set, according to claim 1, characterized by the fact that the transverse dimension (A) of each mounting ear (1103, 1104) is in the range of 0.29 to 0.36 of the transverse dimension (B) of the projection part (1230).
[6]
6. Excavator wear set according to claim 1, characterized by the fact that the transverse dimension (A) of each mounting ear (1103, 1104) is in the range of 0.3 to 0.35 of the transverse dimension (B) of the projection part (1230).
Petition 870190071903, of 7/26/2019, p. 43/49
3/7
[7]
7. Excavator wear set according to claim 1, characterized by the fact that the transverse dimension (A) of each mounting ear (1103, 1104) is in the range of 0.31 to 0.34 of the transverse dimension (B) of the projection part (1230).
[8]
8. Excavator wear set according to claim 1, characterized in that the transverse dimension (A) of each mounting ear (1103, 1104) is 0.32 of the transverse dimension (B) of the protruding part (1230).
[9]
9. Excavator wear set according to claim 1, characterized by the fact that the transverse dimension (A) of each mounting ear (1103,
1104) is 0.33 of the transverse dimension (B) of part in overhang (1230). 10. Set excavator wear, wake up with the claim 1, characterized by the fact that The
transverse dimension (A) of each mounting ear (1103, 1104) is one third of the transverse dimension (B) of the protrusion part (1230).
[10]
11. Excavator wear set according to claim 1, characterized by the fact that the transverse dimension (A) of each mounting ear (1103, 1104) is a distance from an external face of the respective mounting ear to a internal face.
[11]
Excavator wear set, according to claim 11, characterized in that the inner face of each mounting ear (1103, 1104) is adapted to oppose and fit with a respective side wall (1236) of the part protrusion (1230) of the adapter (1200).
Petition 870190071903, of 7/26/2019, p. 44/49
4/7
[12]
Excavator wear set according to claim 1, characterized by the fact that the transverse dimension (B) of the protruding part (1230) is a distance between opposite side walls (1236) of the same.
[13]
14. Excavator wear set according to claim 1, characterized by the fact that the wear element is an excavating tooth (1100).
[14]
Excavator wear set according to claim 1, characterized in that the protruding part (1230) of the adapter is symmetrical with respect to a horizontal plane of the adapter (1200).
[15]
16. Excavator wear set according to claim 1, characterized in that the adapter (1200) additionally comprises a pair of side wall mounting recesses (1203, 1204) located in a front part of the respective side walls opposite sides (1220) of the adapter, each side wall mounting recesses (1203, 1204) adapted to receive a respective mounting element ear (1103, 1104), each wall mounting recess (1203, 1204) side being symmetrical in relation to a horizontal plane of the adapter (1200).
[16]
17. Excavator wear set according to claim 1, characterized by the fact that the mounting ears (1103, 1104) of the wear element are symmetrical with respect to a horizontal plane of the element
in wear.18. Element in wear for one set of wear in excavator, the element of wear comprising: one body (1102) with one cavity plug-in (1110), the
Petition 870190071903, of 7/26/2019, p. 45/49
5/7 fitting cavity having a transverse dimension (B);
a pair of mounting ears (1103, 1104) extending from the body (1102), each of the mounting ears (1103, 1104) having a transverse dimension (A);
characterized by the fact that each of the mounting ears (1103, 1104) also having an upper face and a lower face that are arranged in such a way that both the upper and lower faces are aligned to converge; and where the transverse dimension (A) of each mounting ear (1103, 1104) is in the range of 0.25 to 0.4 of the transverse dimension (B) of the socket (1110), and the socket ( 1110) has a top and bottom rear support surface (1111, 1112), and a top and bottom front support surface (1113, 1114), the top rear support surface (1111) and the top front support surface (1113) ) the rear and front parts, respectively, of a single slightly curved upper surface of the socket, the lower rear support surface (1112) and the lower front support surface (1114) being the rear and front parts, respectively, from a single slightly curved lower surface of the socket (1110), and at the rear of the socket (1110) the upper and lower rear support surfaces (1111, 1112) converge in a forward direction.
[17]
19. Wear element according to claim 18, characterized by the fact that the transverse dimension (A) of each mounting ear (1103, 1104) is in the range of 0.26 to 0.39 of the transverse dimension (B ) gives
Petition 870190071903, of 7/26/2019, p. 46/49
6/7 fitting cavity (1110).
[18]
20. Wear element according to claim 18, characterized by the fact that the transverse dimension (A) of each mounting ear (1103, 1104) is in the range of 0.27 to 0.38 of the transverse dimension (B ) of the socket (1110).
[19]
21. Wear element according to claim 18, characterized by the fact that the transverse dimension (A) of each mounting ear (1103, 1104) is in the range of 0.28 to 0.37 of the transverse dimension (B ) of the socket (1110).
[20]
22. Wear element according to claim 18, characterized by the fact that the transverse dimension (A) of each mounting ear (1103, 1104) is in the range of 0.29 to 0.36 of the transverse dimension (B ) of the socket (1110).
[21]
23. Wear element according to claim 18, characterized by the fact that the transverse dimension (A) of each mounting ear (1103, 1104) is in the range of 0.3 to 0.35 of the transverse dimension (B ) of the socket (1110).
[22]
24. Wear element according to claim 18, characterized by the fact that the transverse dimension (A) of each mounting ear (1103, 1104) is in the range of 0.31 to 0.34 of the transverse dimension (B ) of the socket (1110).
[23]
25. Wear element according to claim 18, characterized in that the transverse dimension (A) of each mounting ear (1103, 1104) is 0.32 of the transverse dimension (B) of the socket
Petition 870190071903, of 7/26/2019, p. 47/49
7/7 (1110).
[24]
26. Wear element according to claim 18, characterized in that the transverse dimension (A) of each mounting ear (1103, 1104) is 0.33 of the transverse dimension (B) of the socket (1110 ).
[25]
27. Wear element according to claim 18, characterized in that the transverse dimension (A) of each mounting ear (1103, 1104) is one third of the transverse dimension (B) of the socket (1110) .
[26]
28. Wear element according to claim 18, characterized in that the transverse dimension (B) of the socket (1110) is a distance between an inner face of the first mounting ear of the pair of mounting ears ( 1103, 1104) and an inner face of the second mounting ear of the pair of mounting ears (1103, 1104).
[27]
29. Wear element according to claim 18, characterized in that the transverse dimension (A) of each mounting ear (1103, 1104) is a distance from an external face of the respective mounting ear to an internal face of the same.
[28]
30. Wear element according to claim 18, characterized in that the mounting ears (1103, 1104) of the wear element are symmetrical with respect to a horizontal plane of the wear element.

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同族专利:

公开号 | 公开日

AP2012006355A0|2012-08-31|

US10385548B2|2019-08-20|

EP2510160B1|2019-08-07|

AU2010330705B2|2014-07-31|

RU2546179C2|2015-04-10|

US9469974B2|2016-10-18|

CA2783709C|2018-06-12|

US20190323208A1|2019-10-24|

US11193256B2|2021-12-07|

AU2012100453A4|2012-05-17|

CN108118744A|2018-06-05|

BR112012014006A2|2018-06-05|

CA3050939C|2021-10-19|

CA2783709A1|2011-06-16|

AP3796A|2016-08-31|

US20160319519A1|2016-11-03|

EP2510162A1|2012-10-17|

EP2510162B1|2021-10-06|

EP2510160A4|2017-06-21|

WO2011069215A1|2011-06-16|

CA3050939A1|2011-06-16|

AU2010330673B2|2013-05-16|

AU2010330705B8|2014-08-07|

PE20130333A1|2013-04-03|

EP2510160A1|2012-10-17|

RU2012126823A|2014-01-20|

EP2510162A4|2017-11-15|

CA2783698A1|2011-06-16|

CN102686812A|2012-09-19|

CN102686811B|2014-10-22|

US20120260539A1|2012-10-18|

AU2010330673A1|2012-03-29|

CL2012001554A1|2013-07-05|

AP3457A|2015-12-31|

ZA201204283B|2016-01-27|

BR112012014009A2|2018-06-05|

AU2010330705A1|2012-03-29|

AU2012100453C4|2015-01-22|

CA2783698C|2019-12-03|

WO2011069183A1|2011-06-16|

PE20130327A1|2013-04-03|

CL2012001551A1|2013-01-25|

RU2012126817A|2014-01-20|

AU2012100453B4|2012-06-21|

CN104018546B|2018-05-01|

AU2010330705A8|2014-08-07|

US9834909B2|2017-12-05|

AP2012006342A0|2012-06-30|

CN104018546A|2014-09-03|

CN102686811A|2012-09-19|

US20120260540A1|2012-10-18|

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法律状态:
2019-01-02| B06T| Formal requirements before examination [chapter 6.20 patent gazette]|

2019-01-08| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

2019-04-30| B07A| Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]|

2019-09-17| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

2019-10-29| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 13/12/2010, OBSERVADAS AS CONDICOES LEGAIS. (CO) 20 (VINTE) ANOS CONTADOS A PARTIR DE 13/12/2010, OBSERVADAS AS CONDICOES LEGAIS |

优先权:

申请号 | 申请日 | 专利标题

AU2009906064A|AU2009906064A0|2009-12-11|An excavator wear assembly|

PCT/AU2010/001682|WO2011069215A1|2009-12-11|2010-12-13|An excavator wear assembly|

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