• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The protector for a piece to be blasted (3) having an axis of revolution, said protector comprising: ▪ a hood and a chamber having shapes adapted to accommodate the piece to be blasted; Said chamber having at least one flat section of shape corresponding to at least one flat section of said cover; ▪ two lateral protectors (41, 42) mounted on the piece to be shot-blasted (3) and having a degree of freedom with respect to the chamber and the hood, the hood, the chamber and the two lateral protectors (41, 42 forming a formwork ensuring the sealing of the shot, said formwork comprising a projection window of the shot whose surface corresponds to a portion of a surface of the chamber.
    公开号:FR3046098A1
    申请号:FR1563424
    申请日:2015-12-29
    公开日:2017-06-30
    发明作者:Gumaro Rodriguez；Jesus Camarena；Yohannes Marcelet；Jesus Murillo；Allan Puente
    申请人:SNECMA Mexico SA de CV；
    IPC主号:
    专利说明:

    PROTECTIVE FOR GRILLING
    FIELD
    The field of the invention relates to protectors parts to shot blast. More particularly, the field of the invention relates to rotating part protection devices whose shot blasting is performed by means of a projection window providing shot blasting in a zone. The generally shot-blasted parts of the field of application of the invention relate to mechanical parts having an axis of revolution which are caused to be rotated during the shot blasting operation. During this operation, one objective is to homogenize the process over an entire region of the part.
    STATE OF THE ART
    Currently, there are protective devices to ensure a shot peening operation of a room while limiting the impact of the shot on the outside environment of the room. Generally, the devices for protecting parts to be shot-blasted must comprise a fixed part ensuring a fixed firing zone on the part that is rotating. However, when the part is rotated during the shot blasting operation, the protections of the part can induce friction and thus damage to the part to be blasted. Degradations of the part can take for example the form of scratches.
    Another disadvantage is that the shots, because of their trajectory, speed and shocks with the piece to be blasted, can reach areas that want to keep tight shot. In addition, a corollary disadvantage is to lose shots or waste when the shot blasting operation does not control the re-collection of shots projected on the piece to shot.
    Another problem that arises is to design a protective device that is simple to mount while allowing to avoid contact friction with the rotating part. Such a protective device requires great care when positioning the piece to be blasted to reduce the mechanical interactions between said part and the constituent elements of the protective device. Such positioning is difficult to ensure and reproduce over time.
    Currently, no device can guarantee to avoid any damage caused by the mechanical interactions between the piece to be blasted and the protective device.
    SUMMARY OF THE INVENTION The invention solves the aforementioned drawbacks.
    An object of the invention relates to a protector for a piece to be blasted with an axis of revolution, comprising: a cover and a chamber having shapes adapted to accommodate the piece to be blasted; said chamber having at least one shaped section corresponding to at least one section of said cover; two side protectors mounted on the piece to be blasted and having a degree of freedom vis-à-vis the chamber and the hood.
    The hood, the chamber and the two side protectors form a formwork ensuring the sealing of the shot, said formwork comprising a projection window of the shot whose surface corresponds to a portion of a surface of the chamber.
    According to one embodiment, at least one lateral protector comprises a radial extension to limit the friction generated during the rotation of the part to be blasted with the walls of the chamber and / or the cover.
    According to one embodiment, the chamber comprises a centralizer system for ensuring the centering of the chamber relative to the axis of rotation of the part to be blasted or at least one protector.
    According to one embodiment, at least one lateral protector has a longitudinal extension allowing to offer a bearing surface with the centralizer system during assembly of the formwork around the piece to be blasted.
    According to one embodiment, the centralizer system comprises a portion adapted to support a portion of the bearing surface of a side protector during a centering operation and means for making this portion removable to release the contact between said portion of the centering system and the portion of the bearing surface of the side shield after the centering operation.
    According to one embodiment, the chamber comprises at least one protective element ensuring the stopping of the stroke of a shot, said protective element having a semi-open shape to form a first space in which the rotating part circulates freely. and a second blocking space maintained on the interior walls of the chamber.
    According to one embodiment, each protection element has a "U" or "V" shape.
    According to one embodiment, the chamber comprises two first holding devices cooperating to be fixed with two second hood holding devices.
    Another object of the invention relates to a method of mounting a formwork forming a protection of a mechanical part having an axis of revolution intended to undergo a shot blasting operation, and comprising the following steps: mounting and fixing of two side protectors on both sides of the piece to be blasted with an axis of revolution;
    Insertion of the piece to be blasted with its two lateral protectors made integral with said piece in a chamber;
    Centering of the piece to be shot-blasted with its two lateral protectors vis-à-vis the chamber by means of a centering system;
    Assembly of the cover on the chamber from holding devices making contact solidarisant the chamber with the cover.
    According to one embodiment of the invention, the centering step comprises the following sub-steps: setting a first positioning of the centering system vis-à-vis the axis of revolution of the piece to be blasted; contacting a portion of a bearing surface of a side shield with a portion of the centering system when the piece to be blasted is inserted into the chamber; adjusting a second positioning of the centering system vis-à-vis the axis of revolution of the piece to be blasted so that the centering system is no longer in contact with the side protector.
    BRIEF DESCRIPTION OF THE FIGURES Other features and advantages of the invention will emerge on reading the detailed description which follows, with reference to the appended figures, which illustrate: FIGS. 1A, 1B, 1C: perspective views of the various elements of FIG. a protective device of the invention; FIGS. 2A, 2B: an example of a chamber forming a protection element according to the protector of the invention; FIGS. 3A, 3B, 3C, 3D: the main steps of mounting a piece to be blasted into a protective form of the invention; FIGS. 4A, 4B, 4C: different views of the assembly, in particular at the junction between the moving lateral protectors and the fixed chamber of the protective casing of the part to be blasted.
    DESCRIPTION
    According to one embodiment, the piece to be blasted 3 is a monobloc bladed disk. The invention applies to other types of parts to be shot blasted including parts having a symmetrical revolution or having a geometry in a cylindrical shape.
    FIG. 1A shows such a part 3 to which two lateral protectors 41, 42 have been mounted on either side of its lateral faces. The lateral protectors 41, 42 are designed so as to be held integral with the piece to be shot-blasted 3. For this purpose, it has the same axis of revolution 44 as the part to be shot-blasted 3.
    A first lateral protector 41 comprises a radial extension 411 making it possible to avoid contact between the piece to be shot-blasted 3 and the chamber 2 of FIG. 1B. The first lateral device 41 also comprises a longitudinal extension 410 which extends in the direction of the axis of rotation 44. The longitudinal extension 410 ensures contact during assembly with a centralizer 27 of the chamber 2 shown in Figure 1 B.
    A second device 42 makes it possible to protect the other face of the piece to be shot-blasted 3. This second device 42 can also be provided with a radial extension 421 intended to protect the other face of the piece 3 from friction with the chamber 2.
    Figure 1B shows a perspective view of the chamber 2 of the invention.
    According to one embodiment, the chamber 2 has a substantially parallelepipedal general shape comprising on its upper part in the plane section 201 an opening for partially inserting the piece to be blasted 3.
    The chamber 2 comprises two lateral faces 22 parallel to the mean plane of the piece to be shot-blasted 3, said mean plane being perpendicular to the axis of revolution 44 of the part to be shot-blasted 3. The parallel faces 22 comprise lateral openings 22A, or notches 22A adapted to cooperate with the shape of the lateral protective devices 41,42. Preferably, these lateral openings have a circular profile, a semicircular profile or a profile corresponding to a portion of a circular arc according to the position of the cutting section 201 of the chamber 2.
    In addition, the chamber 2 comprises an opening 230 of a bottom wall 23 flat or substantially in a flat surface. The dimensions of the opening 230 are smaller than the wall 23 so as to form a window of the wall 23. According to one embodiment, the shape of the window 230 is rectangular. According to other embodiments, the window 230 may have a shape of parallelogram, triangle or oval such as an ellipse or a circular surface.
    The chamber 2 comprises walls 21 arranged between the parallel lateral faces 22 between them.
    A first function of the walls 21 is to avoid the dispersion of shots projected in the chamber 2.
    In addition, a second function of the walls 21 is to serve as a support for protection elements 26 having a shape of "U" or "V" to limit the trajectories of the shots inside the chamber 2. The chamber 2 comprises at least one protection element 26 ensuring the stopping of the stroke of a shot, said protective element 26 having a semi-open shape to form a first space in which the rotating part circulates freely and a second space of blocking maintained on the interior walls of the chamber 2
    Some walls 21 are perpendicular to the lower wall 23 and other walls 21 are oriented at a predefined angle with the lower wall 23. The arrangement of the walls 23 is designed so as to: optimize the confinement of the piece to be blasted 3 in the chamber 2 and; provide a support surface preferably perpendicular to the protection elements 26 to optimize the interception of their trajectory. The arrangement between the walls 21 and the protection elements 26 is provided with a shift greater than the size of the balls to avoid creating retention zones of balls or shots. Thus, the flow of the logs is assured
    Moreover, the walls 21 also make it possible to provide a support flange for first holding devices 24 intended to cooperate with second holding devices 11 for a cover 1, such as that represented in FIG. 1C.
    The chamber 2 comprises a centralizer system 27. According to one embodiment, the centralizing system 27 is fixed on one of the lateral faces 22 of the chamber 2 near the circular lateral opening 22A, or semi-circular. Advantageously, the centralizing system 27 comprises an upper portion whose profile which is intended to receive part of the longitudinal extension 410 of a lateral protector 41 during its assembly in the chamber 2. According to one embodiment, the profile of the upper part of the centralizing system 27 is a cylinder portion.
    The centralizer system 27 includes a positioning element making said removable system movable along an axis. According to one embodiment, the positioning element is a butterfly screw. When the latter is loosened, the centering system 27 moves in the direction of the opening 23 of the chamber or in the opposite direction to the opening 22A.
    This displacement perpendicular to the axis of revolution 44 makes it possible to center the piece to be shot-blasted 3 during the assembly of said piece in the chamber 2. In a first step, the centralizing system 27 is held in a position to receive the lateral protector 41 and the supporter. Then, in a second step, the centralizing system 27 is lowered, leaving free the rotation of the protector 41 driven by the rotation of the piece to be blasted 3.
    FIG. 1C shows a cover 1 comprising two parallel faces 12 each forming a hollow disk portion, that is to say provided with an opening or notch 12A substantially complementary to the opening 22A of the corresponding lateral face 22. The cover 1 comprises a lower section included in a section plane 101. The lower section of the cover 1 is adapted to cooperate with the upper surface of the chamber 2 by means of holding devices 11. When the piece to be blasted 3 is integrated in the chamber 2 and centered with respect to the chamber 2, the cover 1 is fixed to the chamber by means of holding devices 11. The latter devices 11 comprise a plane interface cooperating with the holding devices 24 of the chamber 2.
    According to one embodiment, knurled nuts 25, also referred to as "star wrists" 25, are used to fix the holding devices 11 and 24 together so as to make the chamber 2 integral with the cover 1. The assembly formed by the chamber 2, the cover 1 and the side protectors 41, 42 then form a protective formwork for the piece to be blasted 3.
    FIG. 2A illustrates a perspective view of a piece to be shot-blasted 3 to which two lateral protectors 41, 42 have been attached. The attachment between the piece to be blasted 3 and the side protectors 41, 42 can be ensured by means of screw-nut systems. According to one embodiment, the lateral protectors 41, 42 form a solid volume extending in the central portion of the piece 3 to be blasted. When the piece 3 shot blasting comprises a central frame for attaching vanes, the side protector may have a profile adapted to cooperate with the latter frame. Such a frame is not shown in the figures.
    FIG. 2B represents an embodiment of the invention in which a duct 28 is fixed to the projection window 230. The duct 28 makes it possible to convey shots from a suitable device not shown in the figures to the piece 3 while limiting the stroke of the projectiles on areas adjacent to the projection window 230. Furthermore, the conduit 28 can channelably recover the shots falling after being projected. This allows in particular to limit waste and recover a maximum of shot after the shot blasting operation.
    FIGS. 3A to 3D represent the set of elements at different stages of the assembly method of the invention of the protective form around the part to be shot blasted 3. An embodiment of such a method is described below.
    According to a first step shown in FIGS. 2A and 3A, the lateral protectors 41, 42 are positioned on either side of the piece to be shot-blasted 3. The lateral protectors 41, 42 are mounted centered around the axis of revolution 44 of the piece 3. The side protectors 41,42 can be mounted successively or at the same time on either side of the piece 3. Thus, the side protectors 41,42 share the same axis of revolution 44 as the piece to be blasted. 3 after mounting and fixing on each side of the piece to be blasted 3. In this first step, the side protectors 41,42 are fixed to the piece 3.
    The chamber 2 is then positioned substantially in the same plane as the piece to be blasted 3 to facilitate its insertion. For this purpose, the chamber 2 can be lifted by means of a lifting plate.
    FIG. 3B represents the piece to be shot-blasted 3 provided with its lateral protectors 41, 42 and positioned in the chamber 2. The positioning is carried out by an actuation, such as a lifting, of the centralizing system 27 in the direction of and up to the contact with the adjacent side protector 41. For this purpose, the side protector 41 has a longitudinal extension 410 to form a bearing surface with the central system. When the centering system 27 is in contact, then the position of the chamber 2 is fixed, for example, by locking the height of a tray on which it is mounted. The position of the part 3 is also fixed after the previous contacting.
    When the piece 3 and the lateral protectors 41, 42 are centered vis-à-vis the chamber 2, the centralizer 27 is released for example by means of a butterfly screw which makes it possible to make the portion of the centralizing system 27 removable. contact with the protector 41. FIG. 3C shows this step in which the centralizing system 27 is then no longer in contact with the protector 41, the latter having carried out a translation movement 30 tending to move it away from the adjacent protector.
    Thus, the steps of: setting a first positioning of the centering system 27 vis-à-vis the axis of revolution of the piece to be blasted; contacting a portion of a bearing surface of a lateral protector 41 with a portion of the centering system 27 when the piece to be blasted is inserted into the chamber 2; adjusting a second positioning of the centering system 27 vis-à-vis the axis of revolution of the piece to be blasted so that the centering system 27 is no longer in contact with the lateral protector 41.
    A final step is shown in FIG. 3D in which the cover 1 is positioned on the chamber 2 by means of the holding devices 24 of the chamber 2 and the holding devices 11 of the cover 1. The maintenance between the cover 1 and the chamber 2 is secured by a fastening device such as knurled nuts 25 shown in Figure 2B. These maintain a plane contact between the holding devices 11 and 24.
    The protector and the mounting method of the invention provide protection for interior areas of the formwork and part 3 that are not desired to be affected by the shot-blasting operation, in particular thanks to the presence of lateral protectors 41, 42 and protection elements 26. One advantage is to limit the overflow of grit and the loss of grit. Finally, the protector of the invention and the assembly method of the invention make it possible to center on the one hand the lateral protectors 41, 42 and the piece to be shot-blasted 3 with on the other hand the chamber 2 and the hood 1. This centering makes it possible to limit the friction between the piece to be blasted 3 and the protective elements. As a result, this results in a reduction of the degradations of the piece to be blasted 3.
    In addition, the centering saves time in the assembly operation of the part in its protective formwork.
    FIGS. 4A, 4B and 4C show, in sectional view, the arrangement of the protectors 41, 42 in the protective formwork of the invention surrounding the piece to be blasted 3.
    The zone 50 makes it possible to represent the radial extensions 411 of the lateral protectors 41, 42 which extend between the piece to be blasted 3 and the chamber 2 and the cover 1. These extensions 411 make it possible to seal the shot during the blasting operation of the piece 3.
    In addition, these extensions 411 make it possible to avoid generating scratches on areas of the part 3 in rotation with respect to the chamber 2 or the cover 1 which are fixed. The invention is advantageously applied during an ultrasonic shot blasting operation.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    1. Protector for a part to shot blast (3) having an axis of revolution, characterized in that said protector comprises: a cover (1) and a chamber (2) having shapes adapted to accommodate the piece to be blasted (3); said chamber (2) having at least one section (201) of corresponding shape to at least one section (101) of said cover (1); two lateral protectors (41, 42) mounted on the piece to be shot-blasted (3) and having a degree of freedom with respect to the chamber (2) and the cover (1), the cover (1), the chamber ( 2) and the two lateral protectors (41, 42) forming a formwork sealing the shot, said formwork comprising a projection window (230) of the shot whose surface corresponds to a portion of a surface (23). of the room (2).
    [2" id="c-fr-0002]
    2. Protector according to claim 1, characterized in that at least lateral protector (41) comprises a radial extension (411) to limit the friction generated during the rotation of the piece to be blasted (3) with the walls of the chamber (2) and / or the hood (1).
    [3" id="c-fr-0003]
    3. Protector according to any one of claims 1 to 2, characterized in that the chamber (2) comprises a centralizing system (27) for ensuring the centering of the chamber (2) with respect to the axis of rotation ( 44) of the piece to be blasted (3) or at least one protector (41, 42).
    [4" id="c-fr-0004]
    4. Protector according to claims 3, characterized in that at least one side protector (41) has a longitudinal extension (410) to provide a bearing surface with the centralizer system (27) during assembly formwork around the piece to be blasted (3).
    [5" id="c-fr-0005]
    5. Protector according to any one of claims 3 to 4, characterized in that the centralizer system (27) comprises a portion adapted to support a portion of the bearing surface of a side protector (41) during a centering operation and means for making this portion removable to release the contact between said portion of the centralizer system (27) and the portion of the bearing surface of the side protector (41) after the centering operation.
    [6" id="c-fr-0006]
    6. Protector according to any one of claims 1 to 5, characterized in that the chamber (2) comprises at least one protective element (26) for stopping the stroke of a shot, said protective element ( 26) having a semi-open shape to form a first space in which the rotating part circulates freely and a second blocking space maintained on the inner walls of the chamber (2).
    [7" id="c-fr-0007]
    7. Protector according to claims 6, characterized in that each protective element (26) has a shape of "U" or "V".
    [8" id="c-fr-0008]
    8. Protector according to any one of claims 1 to 7, characterized in that the chamber (2) comprises two first holding devices (25) cooperating to be fixed with two second holding devices (11) of the cover (1) .
    [9" id="c-fr-0009]
    9. A method of mounting a formwork forming a protection of a mechanical part (3) having an axis of revolution (44) intended to undergo a shot blasting operation, characterized in that it comprises the following steps: mounting and fixing two side protectors (41,42) on either side of the piece to be shot-blasted (3) having an axis of revolution (44); Insertion of the piece to be shot-blasted (3) provided with its two lateral protectors (41, 42) made integral with said piece (3) in a chamber (2); Centering of the piece to be shot-blasted (3) provided with its two lateral protectors (41,42) vis-à-vis the chamber (2) by means of a centering system (27); Mounting the cover (1) on the chamber (2) from holding devices (11, 24) making a solidarisant contact the chamber (2) with the cover (1).
    [10" id="c-fr-0010]
    10. Mounting method according to claim 9, characterized in that the centering step comprises the following sub-steps: setting a first positioning of the centralizer system (27) vis-à-vis the axis of revolution of the piece to be blasted; contacting a portion of a bearing surface of a side shield (41) with a portion of the centering system (27) when the piece to be blasted is inserted into the chamber (2); adjusting a second positioning of the centering system (27) with respect to the axis of revolution of the workpiece to be blasted so that the centering system (27) is no longer in contact with the side shield (41). ).
    类似技术:
    公开号 | 公开日 | 专利标题
    FR3046098A1|2017-06-30|PROTECTIVE FOR GRILLING
    EP1914040B1|2010-12-08|Shot blasting methods and installations
    EP1537950A1|2005-06-08|Protection mask for the surface treatment of blades for turbine engines
    FR2923557A1|2009-05-15|BLOWER DRAWER ASSEMBLY AND ITS SHOCK ABSORBER, BLOWER DAMPER AND METHOD FOR CALIBRATING THE SHOCK ABSORBER
    FR3032223A1|2016-08-05|ANTI-CORROSION PLUG FOR FILLING A FASTENING ORIFICE AND SYSTEM COMPRISING SAID PLUG
    WO2015004357A1|2015-01-15|Centering a part inside a rotor shaft in a turbine engine
    EP2932051A1|2015-10-21|Removable acoustic panels for turbojet engine casing
    WO2015092308A1|2015-06-25|Guide arm for elements having an elongated shape, in particular for a turbomachine
    FR3056653A1|2018-03-30|CUP FOR PROTECTING A TURBOMACHINE PIECE FASTENING HOLE, PROTECTIVE SYSTEM THEREFOR
    FR2867252A1|2005-09-09|Primary converter`s outlet tube part fixing device for motor vehicle, has balls placed between side of plate part of outlet tube part of primary converter and inner side of support clamp
    FR3008637A1|2015-01-23|PROTECTION CLOSURE FOR A PROJECTION NOZZLE DURING A RECHARGING PROCESS
    EP1593819B1|2006-06-28|Mounting device for a burner ring inside a postcombustion chamber ofa turbo-jet engine
    FR3079553A1|2019-10-04|ASSEMBLY FOR TURBOMACHINE
    FR3026667A1|2016-04-08|LASER CUTTING DEVICE FOR USE IN A CONTAMINATED ENVIRONMENT
    FR2650387A1|1991-02-01|Device for fixing armour elements on a vehicle
    FR2687762A1|1993-08-27|Headlamp with lens, equipped with improved lens mounting means
    EP3667877B1|2022-02-02|Railway vehicle engine and method for installing the engine
    FR3057304B1|2019-11-15|"COOLANT DEFLECTOR"
    EP1760332B1|2008-03-12|An article, which is fastened by means of a gas pressure tool on a substrate
    FR3061882A1|2018-07-20|FRONT OPTICAL BLOCK MOUNT ADAPTED TO CUT THE TRACK OF THE OPTICAL BLOCK DURING A FRONT SHOCK OF A VEHICLE
    FR3025826A1|2016-03-18|SLIDING DOOR GUIDING DEVICE AND ASSEMBLY COMPRISING SUCH A GUIDE DEVICE
    FR3107311A1|2021-08-20|Set for a turbomachine
    FR2522209A1|1983-08-26|Cable inserting tool for elastic protective ferrule - uses compressed air injected into tubular holder contg. retaining collar to hold ferrule
    WO2021048494A1|2021-03-18|Method for producing a ventilation device for a cooling module of a motor vehicle with a tangential flow turbomachine
    FR3091904A1|2020-07-24|INTERNAL STRUCTURE OF A PRIMARY EJECTION DUCT
    同族专利:
    公开号 | 公开日
    US10843308B2|2020-11-24|
    FR3046098B1|2018-06-22|
    US20190009387A1|2019-01-10|
    WO2017115121A1|2017-07-06|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20020042978A1|2000-10-12|2002-04-18|Sonats-Societe Des Nouvelles Applications Des Techniques De Surfaces|Method of shot blasting and a machine for implementing such a method|
    FR2815280A1|2000-10-12|2002-04-19|Sonats Soc Des Nouvelles Appli|Grit blasting machine comprises annular enclosure, which receives part to be blasted, and several vibrating surfaces which transmit kinetic energy to projectiles in enclosure|
    US20060111025A1|2004-04-28|2006-05-25|Satoru Yanaka|Large part polishing apparatus and polishing method|CN108422329A|2018-02-05|2018-08-21|中国航发北京航空材料研究院|The protecting tool set-up and its ball blasting method in a kind of areas end tooth Jin Pen|
    FR3080792A1|2018-05-02|2019-11-08|Safran Aircraft Engines Mexico|PROTECTIVE DEVICE FOR A CRUSHING PART|FR2801236B1|1999-11-18|2001-12-21|Snecma|METHOD AND MACHINE FOR ULTRASONIC BLASTING OF WORKPIECES ON A WHEEL|
    DE102013107497B4|2013-07-15|2019-08-14|Rolls-Royce Deutschland Ltd & Co Kg|Device for non-abrasive surface treatment of a component in a container|WO2020081159A2|2018-09-05|2020-04-23|East Carolina University|Systems for detecting vascular and arterial disease in asymptomatic patients and related methods|
    CN112454183A|2020-11-09|2021-03-09|东莞质研工业设计服务有限公司|Integral type panel beating box polishing robot|
    CN113211332A|2021-06-16|2021-08-06|中国航发航空科技股份有限公司|Blade tenon shot blasting process separated type protection clamp and clamping method thereof|
    法律状态:
    2016-12-09| PLFP| Fee payment|Year of fee payment: 2 |
    2017-06-30| PLSC| Publication of the preliminary search report|Effective date: 20170630 |
    2017-11-21| PLFP| Fee payment|Year of fee payment: 3 |
    2019-11-20| PLFP| Fee payment|Year of fee payment: 5 |
    2020-11-20| PLFP| Fee payment|Year of fee payment: 6 |
    2021-11-18| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1563424A|FR3046098B1|2015-12-29|2015-12-29|PROTECTIVE FOR GRILLING|
    FR1563424|2015-12-29|FR1563424A| FR3046098B1|2015-12-29|2015-12-29|PROTECTIVE FOR GRILLING|
    US16/067,253| US10843308B2|2015-12-29|2016-12-27|Protector for shot-blasting|
    PCT/IB2016/001813| WO2017115121A1|2015-12-29|2016-12-27|Shot-blasting guard|
    [返回顶部]