Latch assembly for service pin of machine

Abstract

A latch assembly for a service pin of a machine includes a housing, a first member, and a second member. The housing is configured for rotatably receiving the service pin. Further, the housing defines a sliding structure for axial movement of the service pin at a rotational position of the service pin. The first member is pivotably attached to the housing and is adapted to selectively prevent rotation of the service pin. The second member of latch assembly is configured to be slidably attached to the housing and movable to a bottom position to retain the first member.

What is claimed is: 
     
         1 . A latch assembly for a service pin of a machine, comprising:
 a housing for rotatably receiving the service pin, the housing defining a sliding structure for axial movement of the service pin at a rotational position of the service pin;   a first member pivotably attached to the housing and adapted to selectively prevent rotation of the service pin; and   a second member slidably attached to the housing and movable to a bottom position to retain the first member.   
     
     
         2 . The latch assembly of  claim 1 , wherein the first member includes a stopper configured to engage the service pin. 
     
     
         3 . The latch assembly of  claim 1 , wherein the first member includes an engagement structure configured to engage the second member at the bottom position. 
     
     
         4 . The latch assembly of  claim 1  wherein the first member comprises a pin to couple the first member to the second member. 
     
     
         5 . The latch assembly of  claim 1 , wherein the second member defines a slot to guide travel of the second member between a top position and the bottom position. 
     
     
         6 . The latch assembly of  claim 1 , wherein the second member includes a lock structure configured to engage the first member at the bottom position. 
     
     
         7 . The latch assembly of  claim 1 , wherein the sliding structure is an opening extending along a longitudinal axis of the housing. 
     
     
         8 . A service pin assembly for a machine, comprising:
 a service pin;   a housing for rotatably receiving the service pin, the housing defining a sliding structure for axial movement of the service pin at a rotational position of the service pin;   a first member pivotably attached to the housing and adapted to selectively prevent rotation of the service pin; and   a second member slidably attached to the housing and movable to a bottom position to retain the first member.   
     
     
         9 . The service pin assembly of  claim 8 , wherein the service pin includes an arm configured to engage the first member. 
     
     
         10 . The service pin assembly of  claim 8 , wherein the arm is configured to align with the sliding structure to permit axial movement of the service pin. 
     
     
         11 . The service pin assembly of  claim 8 , wherein the sliding structure is an opening extending along a longitudinal axis of the housing. 
     
     
         12 . The service pin assembly of  claim 8 , wherein the first member includes a stopper configured to engage the service pin. 
     
     
         13 . The service pin assembly of  claim 8 , wherein the first member includes an engagement structure configured to engage the second member at the bottom position. 
     
     
         14 . The service pin assembly of  claim 8 , wherein the second member defines a slot to guide travel of the second member between a top position and the bottom position. 
     
     
         15 . The service pin assembly of  claim 8 , wherein the first member comprises a pin to couple the first member to the second member. 
     
     
         16 . The service pin assembly of  claim 8 , wherein the second member defines a slot to guide travel of the second member between a top position and the bottom position. 
     
     
         17 . The service pin assembly of  claim 8 , wherein the second member includes a lock structure configured to engage the first member at the bottom position. 
     
     
         18 . A machine, comprising:
 a lift arm;   a service pin configured for insertion in the lift arm;   a housing for rotatably receiving the service pin, the housing defining a sliding structure for axial movement of the service pin at a rotational position of the service pin;   a first member pivotably attached to the housing and adapted to selectively prevent rotation of the service pin; and   a second member slidably attached to the housing and movable to a bottom position to retain the first member.   
     
     
         19 . The machine of  claim 18 , wherein the housing is attached with the lift arm. 
     
     
         20 . The machine of  claim 18 , wherein the service pin is configured to engage the lift arm with a stationary frame during servicing of the machine.