• 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:
    This sealed handle for controlling a machine comprises: a function block (6); - An outer shell (8) formed by the union of two rigid half-shells (10, 12), these half-shells enclosing the function block, each half-shell having for this purpose all around its periphery a seam face (20). , 21) which follows a three-dimensional path which closes on itself and which extends in the three dimensions of the space, - a sealing element (14) consisting of an integral block of material elastomer which combines in this same block a rope seal and an annular seal of different cross section to ensure watertightness at the joining faces.
    公开号:FR3039314A1
    申请号:FR1556938
    申请日:2015-07-22
    公开日:2017-01-27
    发明作者:Ludovic Niguet；Thierry Vinard；Fabien Ville；Fabien Pelaez
    申请人:Crouzet Automatismes SAS；
    IPC主号:
    专利说明:

    TIGHT HANDLE FOR CONTROLLING A MACHINE, SEALING ELEMENT FOR THIS HANDLE AND CONTROL PUSH HAVING THE SAME
    HANDLE
    [001] The invention relates to a waterproof steering handle of a machine. The invention also relates to a control panel of a machine comprising this handle, as well as a sealing element for this handle.
    [002] Known manner, there are known control handles of a machine which comprise: - a function block provided with a mechanical part movable directly by hand by a user to trigger the sending of a control command of the machine or a display of information on the current state of the machine driven; an outer shell formed by the union of two rigid half-shells, these half-shells enclosing the function block each of a respective side, each half-shell comprising for this purpose all around its periphery a joining face which follows a course three-dimensional which closes on itself and which extends in the three dimensions of the space, this joining face being: • in support on the corresponding face of join of the other half-shell in a first zone of joint and • pressing on the periphery of the function block in a second joining zone, this second joining zone being contiguous with the first joining zone; a sealing element comprising: a rope joint extending continuously along the three-dimensional path between the joining faces at the first joint zone, to ensure watertightness at this first zone; jointing, and • an annular seal running around the entire function block and located at the second seam area to provide watertightness at that second seam area, the annular seal having a cross-section different from the cross section of the rope joint.
    [003] In the known handles, the joining faces have a complex three-dimensional shape, especially because of ergonomic considerations. In addition, typically, the rope seal and the annular seal have different cross sections. Thus, in these known handles the joint rope and the annular seal are two separate parts mechanically independent of each other because the first and second joint areas have very different shapes. Through the use of such seals, instead of glue or the like, the handle can easily be disassembled during maintenance and maintenance of the handle, then reassembled with the same parts. The manufacture of these joints is also simple and inexpensive. In addition, maintenance can be performed manually and without requiring complicated and expensive equipment. Finally, the size and weight of the handle are reduced to a minimum. However, it was found that the watertightness of these handles was not completely satisfactory. For example, during tests, it was noted that water flakes could penetrate inside the handle which can damage the function of the function block for example.
    [004] There is therefore a need for a driving handle of a machine that has the same advantages as known handles while having a better watertightness.
    [005] The invention therefore relates to such a handle wherein the sealing member consists of a block of a single piece of elastomeric material which combines in this same block the rope joint and the annular seal.
    [006] The inventors have discovered that at the location where the first and second seam areas meet, the contact between the rope seal and the annular seal is not always perfect. In some cases, it has been found that there is an empty space between the two seals by which the water enters the interior of the handle.
    [007] By using a sealing element which joins the rope and ring joints within the same block of material, it makes impossible for such a void to appear at the junction between the first and second zones. join. In addition, the use of this sealing element in one piece keeps the advantages of the known handles.
    Embodiments of the invention may have one or more of the following features: the annular seal comprises at least one segment directly mechanically connected to one end of the rope seal, this segment extending parallel to a first direction in the absence from any external constraint, this extremity extending, in the absence of any external constraint, parallel to a second direction making an angle of 90 °, more or less close to 45 °, with the first direction; the handle comprises a connection interface to a dashboard, the two half-shells each enclose, on one respective side, both the function block and the connection interface, the joining face of each half-shell being for this purpose, bearing on the periphery of the connection interface in a third joint area, and the sealing element further comprises an additional annular seal making the complete turn of the connection interface and being located at the third seaming zone for sealing this third zone with water, this additional annular seal being joined with the other rope and annular seals of the sealing element in the same block of elastomeric material; the additional annular seal makes the complete rotation of an axis and has at least one symmetry of rotation about this axis, an additional end of the rope seal being directly connected to this additional annular seal, this additional end extending, in the absence of any external stress, along a direction of the space making an angle of 90 °, plus or minus 45 °, with a plane perpendicular to said axis; at least one of the two half-shells has a groove formed inside its seam face, the sealing element being inserted inside this groove along the first and second zones join; the sealing member has a hardness on the Shore scale between Shore A and Shore A; the annular seal is an O-ring or a flat seal or bellows seal; the rope seal has a section of circular or square or elliptical shape.
    [009] These embodiments also have the following advantages: - The orientation of the annular seal substantially perpendicular to the end of the rope seal in the absence of external stress, facilitates the mounting of the sealing member. Indeed, when assembling the handle, it is not necessary to twist the annular seal relative to the remainder of the sealing element. - The groove facilitates the maintenance of the sealing element and allows its compression, which improves the sealing. A hardness of the sealing element between Shore A and Shore A makes it possible to have an easily compressible sealing element while remaining rigid enough so that its installation remains simple.
    The invention also relates to a control panel of a machine to drive, the console comprising: - a dashboard, - the sealed handle claimed to control the machine, the handle having a function block provided with a mechanical part displaceable directly by hand by a user to trigger the sending of a control command to the machine or a display of information on the current state of the driven machine, - a mechanical connection interface of the handle on the dashboard, this interface being mechanically connected, on one side, to the dashboard, and, on the other side, to the handle.
    The invention also relates to a sealing element for the claimed handle, this element comprising: - a rope seal extending, in the absence of external stress, continuously along a three-dimensional path identical to the three-dimensional path along of which the joining faces extend at the level of the first joint zone, this rope seal being able to ensure watertightness at this first jointing zone when the handle is in its assembled position, and an annular seal extending, in the absence of external stress, continuously along a three-dimensional path identical to the three-dimensional path along which the joining faces extend at the level of the second joining zone, this annular seal being suitable for to ensure watertightness at this second joining zone and having a cross-section different from the cross section of the rope joint, in the Equel the sealing element consists of a block of one piece of elastomeric material which together in this same block the rope joint and the annular seal.
    The invention will be better understood on reading the description which follows, given solely by way of non-limiting example and with reference to the drawings in which: - Figure 1 is a schematic illustration of a desk control of a machine; FIG. 2 is a schematic illustration, in an exploded view, of a handle of the desk of FIG. 1; - Figure 3 is a schematic illustration, in a sectional view, of a portion of the handle of Figure 2; FIG. 4 is a schematic illustration of a sealing element of the handle of FIG. 2; - Figures 5 and 6 are schematic illustrations, in a close view, of parts of the handle of Figure 3; FIG. 7 is a schematic front view of another embodiment of a handle, and FIG. 8 is a diagrammatic front view of a sealing member for the handle of FIG. In these figures, the same references are used to designate the same elements.
    In the following description, the features and functions well known to those skilled in the art are not described in detail.
    Figure 1 shows a control panel 2 of a machine to drive. For example, this machine is an aircraft such as a helicopter.
    This desk 2 comprises a dashboard 3 equipped with a man-machine interface for controlling the machine. This interface is connected to a control unit 3 of the machine for delivering a control command of the machine when it is actuated. In particular, the human-machine interface comprises a control handle 4.
    Figure 2 shows an embodiment of the handle 4. This handle 4 comprises here: - a block 6 function; - A rigid outer shell 8 formed by the meeting of two half-shells 10,12; a sealing element 14; an interface 16 for connection to the dashboard 3.
    In this example, the handle 4 is a handle ("joystick" in English) to be held by hand by a user of the machine. This sleeve extends essentially along an axis X which is, for example, perpendicular to table 3 when the handle 4 is not moved by the user. This handle can be moved in at least one degree of freedom by pivoting with respect to table 3. Block 6 and interface 16 are here arranged at two opposite ends of the handle 4.
    The block 6 is here provided with a mechanical part (not drawn in the figures) movable by a finger of the user. Block 6 is electrically connected to unit 3 by means of a wire connection. For example, it is an electromechanical switch that is able to be moved between two stable positions. The selective displacement of this switch between its stable positions makes it possible to control and, alternately, to inhibit a drive control of the machine.
    In this example, the two half-shells 10, 12 enclose the block 6, each of a respective side of this block 6. Similarly, they enclose the interface 16.
    The half-shells 10 and 12 each have a rigidity such that their Young's modulus is greater than or equal to 10 GPa or 20 GPa at 25 ° C. Here, these half-shells 10 and 12 are made of thermosetting plastic or thermoplastic or aluminum foundry.
    The element 14 is intended to ensure the watertightness and dust of the handle 4 and will be described in more detail in the following. The element 14 prevents splashes of water and dust from entering the interior of the shell 8 when the handle 4 is assembled. For example, the handle 4 has a level of sealing greater than or equal to the protection rating "IP 66" as defined by standard IEC 60529 of the International Electrotechnical Commission.
    Each half-shell 10, 12 has on all its outer periphery a seaming face which follows a three-dimensional path in space and which closes on itself. A three-dimensional path is a path that extends at least along three non-coplanar directions of space. The respective joint faces of the half-shells 10 and 12 respectively bear the references 20 and 21. In the assembled position of the handle 4, these faces 20, 21 are opposite one another.
    The shell 8 has a three-dimensional shape, chosen in particular according to ergonomic criteria to facilitate its holding in the hand of a user. Because of this, the three-dimensional path followed by the faces 20, 21 is generally complicated and irregular. In particular, this course does not extend in a single plane of space. Here, this path has non-linear and non-constant spline-shaped sections.
    When the half-shells 10 and 12 are assembled to each other to form the shell 8, the face 20 is then supported simultaneously: - on the corresponding face 21 in a joint area 22 (FIG. 3), on the periphery of the block 6 in a joining zone 24 (FIG. 3), and on the periphery of the interface 16 in a joining zone 26 (FIG. 3).
    It is the same for the face 21 with respect to the face 20.
    The interface 16 allows to mechanically connect the handle 4 to the panel 2. Advantageously, the interface 16 also plays the role of mechanical reinforcement, to prevent the shell 8 from breaking when the handle 4 is moved by the user.
    Here, the interface 16 is in the form of a substantially tubular piece which extends along the axis X. One end of this piece is integral without degree of freedom of the shell 8. The other end of this piece is integral without degree of freedom of the dashboard 3. Thus, in this example, the shell 8 is not directly connected to the panel 2. Here, the interface 16 also allows the passage of the wired connection that connects block 6 to unit 3.
    In Figure 3, the element 14 is shown in its position mounted on the half-shell 10 in the absence of the half-shell 12. However, when the handle 4 is intended to be used, the half-shell hulls 10 and 12 are present.
    Figure 4 shows in more detail the element 14 in the absence of external stress. In particular, in FIG. 4, the element 14 is represented in the conformation that it adopts in the absence of support on the joining faces 20, 21. The element 14 consists of a block of one piece made of elastomeric material. Advantageously, the element 14 has a hardness, measured on the Shore scale, between 30 Shore A and 90 Shore A. Preferably, this hardness is between 60 Shore A and 75 Shore A. For example, the element 14 is rubber. The element 14 here comprises a rope seal 32 and annular seals 34 and 36. The seals 32, 34 and 36 are joined in this same block of material and therefore form a single piece. They are in solidarity with each other.
    The seal 32 is shaped to extend continuously along the zone 22 and seal between the half-shells 10 and 12 at this area 22. Here, the seal 32 has, along its length , a cross section of circular shape. In the absence of external stress, it follows a three-dimensional path identical to the three-dimensional path of the joining faces 20, 21 at the zone 22.
    The seal 34 is shaped to make the complete turn of the block 6 and ensure watertightness between the half-shells 10 and 12 and the block 6 at the zone 24. For this purpose, the seal 34 is a flat gasket, of rectangular cross section. In the absence of external stress, it follows a three-dimensional path identical to the three-dimensional path of the joining faces 20, 21 at the zone 24. In this example, rectilinear segments of the seal 34 which are directly connected ends 40 of the seal 32 s 'extend parallel to a D34 direction. The ends 40 extend parallel to a direction D32-1 which makes an angle with the direction D34 equal to 90 °, plus or minus 45 ° or 20 ° or 15 °. Here, this angle is equal to 90 °.
    Finally, the seal 36 is shaped to make the complete turn of the interface 16, and ensure watertightness between the half-shells 10 and 12 and the interface 16 at the zone 26. For this purpose, the seal 36 here has a substantially circular ring shape. In the absence of external stress, it follows a three-dimensional path identical to the three-dimensional path of the joining faces 20, 21 at the zone 26. For example, the seal 36 is an O-ring of circular or ellipsoidal cross section which extends essentially in a plane P, as shown in Figure 4. The ends 42 of the seal 32 are directly connected to the seal 36. Here, the ends 42 are located opposite the ends 40. These ends 42 extend parallel to a direction D32-2 which makes an angle with the plane P equal to 90 °, plus or minus 45 ° or 20 ° or 15 °. Here, this angle is equal to 90 °.
    By using a sealing element which joins the rope and annular joints within the same block of material, it avoids the appearance of empty spaces at the junction between the different joint areas. In addition, the assembly and disassembly of the handle are facilitated. Indeed, there is only one sealing element to be placed, instead of having to position several mechanically independent joints from each other at different locations of the handle. In addition, it is not necessary to bond with an adhesive (glue, potting ..) these different joints to ensure the continuity of the seal.
    In this example, the directions D32-1, D32-2 and D34 and the position of the plane P are identical to the corresponding directions and plane of the three-dimensional path along which the joining faces 20, 21 extend. during the assembly of the handle 4 and before being wedged between the joining faces, the element 14 naturally bears on the joining face 20 or 21 without it being necessary to twist the seals 34 and 36 to do that. The fact that it is not necessary to twist the seals 34 and 36 avoids twisting on itself the rope seal 32. This avoids the occurrence of leakage caused by the twisting of the rope seal 32.
    Figures 5 and 6 show in more detail the ends, respectively, 40 and 42, when the element 14 is assembled on the half-shell 10.
    Advantageously, one and / or the other of the half-shells 10, 12 has a groove 50 dug inside the joint face to receive, only part of the cross section of the element 14. This compresses the element 14. This compression improves the tightness of the handle 4.
    Here, the half-shell 10 comprises the groove 50 (Figures 5 and 6) which follows the three-dimensional path of the joint face 20. This groove 50 receives the joints 32, 34 and 36. For this purpose, the cross section of the groove 50 is semicircular in the zones 22 and 26 and rectangular in the zone 24 to fit the shape of the groove. the cross section of the seals 32, 34 and 36. The depth of the groove 50 allows only a partial insertion of the element 14. Thus, one obtains a compression of this element 14 during assembly. Here the depth of the groove 50 is adjusted to obtain a reduction of 5 to 30% of the thickness of the element 14 in the direction perpendicular to the joint face during the assembly of the half-shells 10 and 12. Preferably, the compression is homogeneous for the joints 32, 34 and 36.
    Advantageously, the element 14 is manufactured by molding in a mold which reproduces, in hollow, the three-dimensional path that must follow the element 14 when it is wedged between the joining faces 20, 21. Thus, the cost manufacturing is reduced because the seal 32 is the right length and there is no unnecessary surlargeurs that lead to waste material.
    FIG. 7 represents a handle 50 identical to the handle 4 except that the sealing element 14 is replaced by a sealing element 52.
    Figure 8 shows in more detail the sealing element 52. The element 52 is identical to the element 14 except that the annular seal 36 is replaced by an annular seal 54. The annular seal 54 is here a bellows seal. The seal 54 therefore has a wall with folds accordion that allow it to deform more than 2 mm or 5 mm or 1 cm while continuing to provide the required seal. For example, the seal 54 may lengthen in a direction parallel to the X axis. Such elongation of at least a portion of the seal 54 may be caused by a translation of the handle 50 along the X axis or by a pivoting of the handle 50 about an axis perpendicular to the axis X and integral with the dashboard 3.
    Many other embodiments are possible. For example, the handle 4 may have a different shape. For example, it is a steering wheel, which can rotate with a degree of freedom in rotation about the axis X. The interface 16 is then replaced by a connection interface of the steering wheel to the dashboard 3 which allows its rotation. In this case, the seal 36 is omitted from the element 14 because the steering wheel connection interface is not then sandwiched between the two half-shells. Indeed, typically, the half-shells correspond to front and rear portions of the steering wheel, turned respectively to the user and to the dashboard 3. Thus, only the rear half-shell encloses the periphery of the interface 16. The annular seal that seals between the rear half-shell and the interface is not connected to the seal 32.
    The position of the block 6 and / or the interface 16 on the handle 4 may be different, in particular depending on the shape of the handle.
    If the handle 4 comprises other components, such as additional function blocks, which are placed in orifices enclosed by the two half-shells 10, 12 and located along the zones 20 and 21, then these half-shells hulls have additional join areas. In this case, the element 14 is provided with additional seals to ensure watertightness in these additional joining areas. For example, these additional seals are identical or similar to the seal 34. In particular, these additional seals are formed in the same block of material and integral with the seals 32, 34 and 36.
    Alternatively, the shapes of the joints of the element 14 are different. For example, the seal 32 or 36 is replaced by a flat seal. Alternatively, the seal 34 or 36 is a quadrilobe seal. This is particularly advantageous when the part from which they seal (for example the interface 16 for the seal 36) can move in rotation relative to the shell 8.
    The interface 16 may be omitted. For example, it is replaced by a fixed pin without degree of freedom of at least one of the half-shells 10 and 12. Alternatively, the shell 8 is directly mechanically connected to the dashboard 3. This is particularly the case of handles for some aircraft. This is made possible by the fact that, in this case, the safety standards require that the shell 8 has a high rigidity. This rigidity is so important that we can afford to connect the shell 8 to the dashboard without going through an interface 16. If the interface 16 is omitted, then the seal 36 and the zone 26 are omitted.
    There are a large number of different function blocks that can replace the block 6. For example, a function block can only include a display of information on the current state of the driven machine. For example, this display is a backlit stage that is not movable by hand by the user.
    The machine is not necessarily a helicopter. It can be an airplane or a glider or a control device of a unmanned aerial vehicle (English language) such as a drone. Alternatively, the machine may be different from an aircraft. For example, it is a construction or earthmoving vehicle, a boat, a handling machine, a wheelchair, or a crane.
    The faces 20, 21 may have another shape and, in particular, follow a three-dimensional path different from that shown in the figures. In this case, the shape of the element 14 is adapted to this new three-dimensional path.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    1. Handle (4; 50) waterproof driving a machine, comprising: - a function block (6) provided with a mechanical part movable directly by hand by a user to trigger the sending of a control command the machine or a display of information on the current state of the driven machine; - An outer shell (8) formed by the meeting of two rigid half-shells (10, 12), these half-shells enclosing the function block each of a respective side, each half-shell comprising for this purpose on all its perimeter a joining face (20, 21) which follows a three-dimensional path which closes on itself and which extends in the three dimensions of the space, this joining face being: • resting on the corresponding joining face the other half-shell in a first joint zone (22), and • pressing on the periphery of the function block in a second joint zone (24), this second joining zone being contiguous with the first joint zone ; a sealing member (14; 52) comprising: a rope joint (32) extending continuously along the three-dimensional path between the joining faces at the first joint zone (22) to ensure watertightness at this first seam area, and • an annular seal (34) running around the entire function block and located at the second seam area (24) to seal at the seam water at this second joint area, this annular seal having a cross-section different from the cross-section of the rope seal, characterized in that the sealing element (14) consists of a block of one piece elastomeric material that joins in this same block the rope joint and the annular seal.
    [2" id="c-fr-0002]
    2. Handle according to claim 1, wherein the annular seal (34) comprises at least one segment directly mechanically connected to one end (40) of the rope seal (32), this segment extending parallel to a first direction in the absence of any external constraint, this end extending, in the absence of any external constraint, parallel to a second direction making an angle of 90 °, more or less than 45 °, with the first direction.
    [3" id="c-fr-0003]
    3. Handle according to claim 1 or 2, wherein: - the handle comprises a connection interface (16) to a dashboard (3); the two half-shells (10, 12) each enclose, on one respective side, both the function block (6) and the connection interface (16), the joining face of each half-shell being, for this purpose, resting on the periphery of the connection interface in a third zone (26) of joining; the sealing element further comprises an additional annular seal (36; 54) which is completely around the connection interface and is located at the third joint zone (26) for sealing against the water of this third zone, this additional annular seal being joined with the other rope seals (32) and annular (34) of the sealing element in the same block of elastomeric material.
    [4" id="c-fr-0004]
    4. Handle according to claim 3, wherein the additional annular seal (36; 54) goes around an axis and has at least one symmetry of rotation about this axis, an additional end (42) of the rope seal being directly connected to this additional annular seal, this additional end extending, in the absence of any external stress, along a direction of the space making an angle of 90 °, plus or minus 45 °, with a plane perpendicular to said axis.
    [5" id="c-fr-0005]
    5. Handle according to any one of the preceding claims, wherein at least one or the other of the two half-shells (10, 12) has a groove (50) formed inside its joining face, the sealing member (14; 52) being inserted inside this groove along the first and second joining regions.
    [6" id="c-fr-0006]
    Handle according to one of the preceding claims, wherein the sealing element (14; 52) has a hardness on the Shore scale between 30 Shore A and 90 Shore A.
    [7" id="c-fr-0007]
    A handle according to any one of the preceding claims, wherein the annular seal (34; 54) is an O-ring or a flat gasket or a bellows gasket.
    [8" id="c-fr-0008]
    8. Handle according to any one of the preceding claims, wherein the rope joint (32) has a section of circular or square or elliptical.
    [9" id="c-fr-0009]
    9. A control panel (2) for a control machine, this console comprising: - an instrument panel (3), - a watertight handle (4; 50) for controlling the machine, this handle comprising a function block ( 6) provided with a mechanical part displaceable directly by hand by a user to trigger the sending of a control command to the machine or a display of information on the current state of the driven machine, - an interface (16) mechanically connecting the handle to the dashboard, this interface being mechanically connected, on one side, to the dashboard, and, on the other side, to the handle, characterized in that the handle is according to any one of the preceding claims.
    [10" id="c-fr-0010]
    10. Sealing element (14; 52) for a handle according to any one of claims 1 to 8, this element comprising: - a rope seal (32) extending, in the absence of external stress, continuously along a three-dimensional path identical to the three-dimensional path along which the joining faces extend at the level of the first joint zone, this rope seal being able to ensure watertightness at this first joining zone when the handle is in its assembled position, and - an annular seal (34) extending, in the absence of external stress, continuously along a three-dimensional path identical to the three-dimensional path along which extend the joining faces at level of the second joint zone, this annular seal being able to ensure watertightness at this second jointing zone and having a cross section different from the cross section. versale of the rope joint, characterized in that the sealing element consists of a block of a single piece of elastomeric material which joins in this same block the rope joint and the annular seal.
    类似技术:
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    FR2706724A1|1994-12-23|Electrical connection of glazing.
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    同族专利:
    公开号 | 公开日
    FR3039314B1|2017-07-21|
    US10120407B2|2018-11-06|
    US20170031382A1|2017-02-02|
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    EP3018048B1|2014-11-06|2019-03-06|Campagnolo S.R.L.|Manual control device for a bicycle, in particular of hydraulic brake and gearshift|US10640950B2|2016-02-19|2020-05-05|Komatsu Ltd.|Operation device of work vehicle|
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    法律状态:
    2016-12-27| PLFP| Fee payment|Year of fee payment: 2 |
    2017-01-27| PLSC| Search report ready|Effective date: 20170127 |
    2017-06-21| PLFP| Fee payment|Year of fee payment: 3 |
    2018-06-20| PLFP| Fee payment|Year of fee payment: 4 |
    2020-06-19| PLFP| Fee payment|Year of fee payment: 6 |
    2021-06-29| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1556938A|FR3039314B1|2015-07-22|2015-07-22|SEALED HANDLE FOR CONTROLLING A MACHINE, SEALING ELEMENT FOR THIS HANDLE AND CONTROL PANEL COMPRISING THIS HANDLE|FR1556938A| FR3039314B1|2015-07-22|2015-07-22|SEALED HANDLE FOR CONTROLLING A MACHINE, SEALING ELEMENT FOR THIS HANDLE AND CONTROL PANEL COMPRISING THIS HANDLE|
    US15/216,439| US10120407B2|2015-07-22|2016-07-21|Sealed joystick for the control of a machine, sealing element for that joystick and a control panel incorporating that joystick|
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