Fifth wheel coupling

Details Fifth wheel coupling Fifth wheel coupling

B - Operations, Transporting

62

D

280/118

B62D 53/12 (2006.01) B62D 53/10 (2006.01)

Patent

CA 1042475

ABSTRACT OF THE DISCLOSURE Disclosed is a fifth wheel coupling for mounting on a towing vehicle for coupling to a trailer king pin. The coupling includes a coupling plate and a pair of jaws operatively connected to the plate and having opposing king pin receiving recesses with their centres forwardly of the axis of rotation of the jaws and having faces forming a rear- wardly directed recess when the jaws are closed. A locking plunger is movable with respect to the plate and is urged into the rearwardly directed recess. A trip lever is mounted on the plate and is urged to maintain the plunger in an inoperative position out of the rearwardly directed recess and it is trippable by closing movement of at least one of the jaws. A locking block is movable with respect to the plate and plunger from an inoperative position to an operative position in which it prevents movement of the plunger out of the rearwardly directed recess. An actuating member is mounted on the plate and movable, by movement of the block to its inoperative position, to move the plunger out of the rearwardly directed recess to free the jaws.

234178

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