Locks – Special application – For control and machine elements
Patent
1988-12-01
1989-11-28
Wolfe, Robert L.
Locks
Special application
For control and machine elements
70231, F16B 4100
Patent
active
048829218
ABSTRACT:
A king pin lock for preventing unauthorized movement of a trailer when detached from a tractor includes a hemispherical boby member having a flat planar face which faces the bottom surface of the trailer, when installed. A cylindrical trailer king pin has a circumferential groove for engagement into the fifth wheel of a towing tractor vehicle. The king pin lock has an aperture dimensioned to allow insertion of the trailer king pin. A pair of arcuate locking arms are pivotally mounted for radial movement within the hemispherical body member into and out of engagement with the king pin groove. A key actuated cam mechanism moves the locking arms between the lock and unlock positions. The locking mechanisms are assembled on a removable locking shell which may be replaced if necessary.
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patent: 3386274 (1968-06-01), McIntyre
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patent: 4704883 (1987-11-01), Dikeys
Kearns Jerry T.
Wolfe Robert L.
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