Wear parts for earth working equipment

Abstract

A ground-engaging wear part for earth working equipment that includes a cap received in an opening to overlie a lock and/or sensor. The cap may engage a lock to facilitate movement of the lock or a lock component without needing to remove the cap, protect an underlying sensor and/or limit the ingress of fines.

1 . A lock for securing a ground-engaging wear part to earth working equipment, the lock comprising:
 a body having an inner portion for selectively contacting a base of the earth working equipment to secure a wear member to the base, and an outer portion; and   a cap attached to the outer portion of the body such that movement of the cap results in a corresponding movement of the body.   
     
     
         2 . The lock of  claim 1  wherein the body is a threaded pin and the cap is attached to cause the pin to turn when engaged by a tool. 
     
     
         3 . The lock of  claim 2  wherein the body includes an opening and a sensor in the opening, and the cap overlies the sensor. 
     
     
         4 . The lock of  claim 3  wherein the body includes a shoulder in the opening against which the cap sets. 
     
     
         5 . The lock of  claim 4  wherein the cap includes a bearing surface to contact the shoulder and a central recess adjacent the shoulder to overlie the sensor. 
     
     
         6 . The lock of  claim 1  wherein the body includes an opening and the cap is received in the opening. 
     
     
         7 . The lock of  claim 6  wherein the cap includes a stem received in the opening, and a head overlying the opening. 
     
     
         8 . The lock of  claim 1  including a sensor contained in the body, wherein the cap overlies the sensor. 
     
     
         9 . The lock of  claim 1  wherein the cap includes a tool-receiving formation to be engaged by a tool to move the cap and thereby move the body. 
     
     
         10 . The lock of  claim 1  wherein the body includes a tool-receiving formation to be engaged by a tool for moving the body when the cap is attached. 
     
     
         11 . The lock of  claim 1  wherein the cap includes a sensor. 
     
     
         12 . The lock of  claim 1  wherein the cap is composed of a non-metal material. 
     
     
         13 . The lock of  claim 1  wherein the cap is composed of a dielectric material. 
     
     
         14 . The lock of  claim 1  wherein the cap is removably attached to the body. 
     
     
         15 . The lock of  claim 1  including at least one fastener to secure the cap to the body. 
     
     
         16 . A lock for securing a ground-engaging wear part to earth working equipment, the lock comprising:
 a body having an inner portion for selectively contacting a base of the earth working equipment to secure a wear member to the base, an outer portion with a recess;   a sensor contained in the recess in the body;   a cap received in the recess in the body outward of the sensor to protect the sensor; and   at least one fastener to secure the cap to the body.   
     
     
         16 . The lock of  claim 15  wherein the cap is attached to the body such that movement of the cap results in a corresponding movement of the body. 
     
     
         17 . The lock of  claim 15  wherein the cap includes a tool-receiving formation to be engaged by a tool to move the cap and thereby move the body. 
     
     
         18 . The lock of  claim 15  wherein the cap is removably attached to the body. 
     
     
         19 . A ground-engaging wear part for earth working equipment comprising a wear member and a lock,
 the wear member including a hole for receiving the lock, and   the lock including (i) a body having an inner portion for selectively contacting a base to secure the wear member to the base, and an outer portion, and (ii) a cap attached to the outer portion of the body such that movement of the cap results in a corresponding movement of the body.   
     
     
         20 . The wear part of  claim 19  wherein the body is a threaded pin and the cap is attached to cause the pin to turn when engaged by a tool. 
     
     
         21 . The wear part of  claim 20  wherein the lock includes a sensor and the cap overlies the sensor. 
     
     
         22 . The wear part of  claim 19  wherein the body includes an opening and the cap is received into the opening. 
     
     
         23 . The wear part of  claim 22  wherein the cap includes a stem received in the opening, and a head overlying the opening. 
     
     
         24 . The wear part of  claim 19  including a sensor contained in the body, wherein the cap overlies the sensor. 
     
     
         25 . The wear part of  claim 19  wherein the cap includes a sensor. 
     
     
         26 . The wear part of  claim 19  wherein the cap is composed of a non-metal material. 
     
     
         27 . The wear part of  claim 19  wherein the cap is composed of a dielectric material. 
     
     
         28 . The wear part of  claim 19  wherein the cap at least substantially closes the hole in the wear member outside of the lock. 
     
     
         29 . A cap for attachment to a lock for securing a wear member to earth working equipment, the cap comprising:
 a body adapted to be received in a lock opening of a wear member, the body including a tool-receiving formation to be engaged by a tool for moving the cap; and   a shank extending from the body, the shank having a smaller width than the body for mating receipt within a recess in the lock and possessing sufficient strength to move the lock when a tool moves the cap.   
     
     
         30 . The cap of  claim 29  wherein the shank possesses sufficient strength to turn the lock when a tool moves the cap. 
     
     
         31 . The cap of  claim 29  including at least one fastener to secure the cap to the lock.