WEAR ASSEMBLY
First Claim
1. A lock for securing a wear member to a base for use in an abrasive environment including fines comprising:
- a collar securable in the wear member and having a hole defined by an inner surface, the hole including a circumferential first recess;
a pin having a head and a tapered shank projecting from the head, the shank being movably received in the hole and releasably maintained in the collar in a hold position where the lock secures the wear member to the base, the shank having a circumferential second recess adjacent the head;
a circumferential first seal received in the first recess, which is compressed between the shank and the inner surface when the pin is in the hold position; and
a circumferential second seal received in the second recess, which is compressed between the head and the collar when the pin is in the hold position.
1 Assignment
0 Petitions
Accused Products
Abstract
A lock that includes a pin and a collar. At least one of the pin and collar include a circular seal and a recess to store the seal. When the pin and collar are engaged in a locking manner, the surfaces of the pin and collar compress the seal such that a barrier is formed to limit ingress of fine earthen material. The lock assembly may be a component of a wear assembly. The lock assembly may be positioned into aligned holes to capture components of the wear assembly together, e.g. a point to an adapter or an adapter to a base. The recess of the pin may be located adjacent the head of the pin. The recess of collar may be located near the bottom of the collar. The application of both an upper and lower seal can further limit the ingress of fine earthen material.
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Citations
20 Claims
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1. A lock for securing a wear member to a base for use in an abrasive environment including fines comprising:
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a collar securable in the wear member and having a hole defined by an inner surface, the hole including a circumferential first recess; a pin having a head and a tapered shank projecting from the head, the shank being movably received in the hole and releasably maintained in the collar in a hold position where the lock secures the wear member to the base, the shank having a circumferential second recess adjacent the head; a circumferential first seal received in the first recess, which is compressed between the shank and the inner surface when the pin is in the hold position; and a circumferential second seal received in the second recess, which is compressed between the head and the collar when the pin is in the hold position. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A lock for securing a wear member to a base for use in an abrasive environment including fines assembly comprising:
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a collar securable in the wear member and having a hole defined by an inner surface that includes threads; a pin having a shank including threads that engage the threads in the collar, so the pin is movably received in the hole and releasably maintained in the collar in a hold position where the lock secures the wear member to the base; and an inner seal and an outer seal each received between the collar and the pin when the pin is in the hold position, and thereby cooperatively enclosing at least a substantial portion of the engaged threads to limit the ingress of fines into the threads. - View Dependent Claims (9, 10, 11)
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12. A wear assembly for use in an abrasive environment including fines comprising:
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a wear member having an exterior surface, an interior surface including a mounting portion that is securable to a base, and an opening defined by an inner surface extending from the exterior surface to the interior surface, wherein the opening includes threads; a pin having a shank including threads that engage the threads in the hole, so the pin is movably received in the hole and releasably maintained in the hole in a hold position where the lock secures the wear member to the base; and an outer seal between the inner surface and the pin generally outside of the engaged threads when the pin is in the hold position to limit the ingress of fines into the threads. - View Dependent Claims (13, 14, 15, 16)
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17. A wear assembly for use in an abrasive environment including fines comprising:
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a wear member having an exterior surface, an interior surface including a mounting portion that is securable to a base, and an opening defined by an inner surface extending from the exterior surface to the interior surface; a collar secured in the opening, the collar having a hole that includes threads and a recess; a pin having a head and a tapered shank projecting from the head to a leading end opposite the head, the shank including a recess and threads between the recess and the leading end that engage the threads in the hole so the pin is movably received in the hole and releasably maintained in the hole in a hold position where the lock secures the wear member to the base; an inner seal in the recess in the collar between the inner surface and the shank that is progressively compressed as the pin is moved to the hold position; and an outer seal in the recess on the shank that is compressed between the head and the collar as the pin is moved to the hold position; wherein the inner and outer seals at least substantially enclose the engaged threads when the pin is in the hold position to limit the ingress of fines into the threads. - View Dependent Claims (18)
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19. A wear assembly for use in an abrasive environment including fines comprising:
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a wear member having an exterior surface, the exterior surface having a working portion such that the working portion converges towards a front end, the working portion for engaging earthen material; a back end having a cavity defined by an interior surface including a mounting portion that is securable to a base; and an opening defined by an inner surface extending from the exterior surface to the interior surface; a collar secured in the opening, the collar having a hole that includes threads and a recess; a pin having a head and a tapered shank projecting from the head to a leading end opposite the head, the shank including a recess and threads between the recess and the leading end that engage the threads in the hole so the pin is movably received in the hole and releasably maintained in the hole in a hold position where the lock secures the wear member to the base; an inner seal in the recess in the collar between the inner surface and the shank that is progressively compressed as the pin is moved to the hold position; and an outer seal in the recess on the shank that is compressed between the head and the collar as the pin is moved to the hold position; wherein the inner and outer seals at least substantially enclose the engaged threads when the pin is in the hold position to limit the ingress of fines into the threads.
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20. A wear assembly for use in an abrasive environment including fines comprising:
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a wear member having an exterior surface, the exterior surface having a working portion such that the working portion converges towards a front end, the working portion for engaging earthen material; a back end having a cavity defined by an interior surface including a mounting portion that is securable to a base; and an opening defined by an inner surface extending from the exterior surface to the interior surface; a pin having a shank including threads that engage the threads in the hole, so the pin is movably received in the hole and releasably maintained in the hole in a hold position where the lock secures the wear member to the base; and an outer seal between the inner surface and the pin generally outside of the engaged threads when the pin is in the hold position to limit the ingress of fines into the threads.
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Specification