Patent ID: 6213489
Filing Date: 2001-04-10
Classification: B62D

Abstract:
A semitrailer locking pin operating system adapted to be used with a trailer having a pair of rails having locking holes that are selectively slidably carried by a suspension frame, the system comprising:a source of air pressure;a main supply line in fluid communication with said source of air pressure;a valve in fluid communication with said main supply line, said valve movable between open and closed positions;at least two locking pins;a return spring associated with each of said locking pins, each of said return springs continuosly forcing one of said locking pins into an engaged position;a locking pin driver assembly connected to each of said locking pins at a connection, said locking pin driver assembly actuated said valve;a protective assembly substantially enclosing said connection, said return spring, and said locking pin driver assembly for reventing debris from inhibiting the operation of said semitrailer locking pin operating system; andwherein each driver pin assembly includes: a hollow fixed bracket; a cylinder carrier said by said bracket; a piston engaging said cylinder, said piston connected to said locking pin; said return spring being disposed within said cylinder, said return spring engaging said piston; said piston disposed within said cylinder and said hollow fixed bracket.