Wear assembly

Patent metadata

Field	Value
Publication number	US-11072913-B2
Application number	US-201815984239-A
Country	US
Kind code	B2
Filing date	May 18, 2018
Priority date	Jul 14, 2011
Publication date	Jul 27, 2021
Grant date	Jul 27, 2021

Abstract

A wear assembly for use on various kinds of earth working equipment that includes a base with a supporting portion, a wear member with a cavity into which the supporting portion is received, and a lock to releasably secure the wear member to the base. The supporting portion is formed with top and bottom recesses that receive complementary projections of the wear member. These recesses and projections include aligned holes so as to receive and position the lock centrally within the wear assembly and remote from the wear surface. The hole in the wear member is defined by a wall that includes a retaining structure provided with an upper bearing surface and a lower bearing surface for contacting and retaining the lock against upward and downward movement in the hole. The lock includes a mounting component that defines a threaded opening for receiving a threaded pin that is used to releasably hold the wear member to the base. The separate mounting component can be easily manufactured and secured within the wear member for less expense and higher quality than forming the threads directly in the wear member.

First claim

The invention claimed is:

1. A lock for releasably securing a wear member to earth working equipment to protect the equipment from wear during use, the lock comprising:
a collar having a body adapted to fit within a hole in the wear member, a threaded opening extending through the body, and a pair of vertically spaced lugs projecting outward of the body to engage opposite shoulders of a retaining structure, the body and the lugs being formed as a one-piece member; and
a threaded pin received into the threaded opening for movement between a release position where the wear member can be installed on and removed from the earth working equipment, and a locked position where the lock retains the wear member on the earth working equipment, wherein the threaded pin is maintained in the threaded opening in both the release and locked positions.

2. A lock in accordance with claim 1 which includes a biased detent on one of the collar and pin, and a pair of recesses on the other one of the collar and pin into which receive the detent, wherein the detent is received in one recess when the pin is in the release position and in the other recess when the pin is in the locked position.

3. A lock in accordance with claim 1 which includes a retainer inserted in the hole of the wear member outside of the body adjacent the lugs to prevent disengagement of the lugs from the shoulders.

4. A lock for securing two separable components together comprising:
a collar including a threaded bore and a plurality of outwardly-projecting lugs to engage and be secured in a hole of one of the components;
a retainer received in the hole of the one component adjacent the lug to prevent disengagement of the collar from the one component; and
a threaded pin received into the threaded bore that when turned moves the pin inward or outward between an extended position where the pin contacts the other component to hold the two components together and a retracted position where the pin releases the other component to permit separation of the two components.

5. A lock in accordance with claim 4 including a latching detent to secure the pin in the extended position and the retracted position.

6. A lock in accordance with claim 5 wherein the latching detent includes a biased tooth projecting outward on the pin and two spaced apart recesses within the threaded opening to receive the tooth in the extended and retracted positions respectively.

7. A lock in accordance with claim 4 wherein the retainer is a clip with an extending tab to prevent removal from the hole.

8. A lock in accordance with claim 4 wherein the retainer is formed of sheet steel.

9. A lock for securing two separable components together comprising:
a collar to engage and be secured in a hole of one of the components including a threaded bore;
a threaded pin received into the threaded bore that when turned moves the pin inward or outward between an extended position where the pin contacts the other component to hold the two components together and a retracted position where the pin releases the other component to permit separation of the two components; and
a latching detent to secure the pin in the extended position and the retracted position.

10. A lock in accordance with claim 9 wherein the latching detent includes a biased tooth projecting outward on the pin and two spaced apart recesses within the threaded opening to receive the tooth in the extended and retracted positions respectively.

11. A lock in accordance with claim 9 including a plurality of outwardly-projecting lugs to engage a retaining structure in the hole and secure the collar in the hole.

Assignees

• Esco Group Llc

Inventors

• Cheyne Mark A
• Cowgill Noah D
• Roska Michael B
• Conklin Donald M
• Zenier Scott H
• Hainley Chris J

Classifications

• E02F9/2883 Primary

  Wear elements for buckets or implements in general · CPC title

• E02F9/2825

  using adapters · CPC title

• E02F9/267 Primary

  Diagnosing or detecting failure of vehicles · CPC title

• E02F9/28 Primary

  Small metalwork for digging elements, e.g. teeth {scraper bits (ploughs for agriculture A01B15/00; teeth of harrows A01B23/02)} · CPC title

• E02F9/2858

  characterised by shape · CPC title