Fifth wheel unlocking device with fluid powered redundancy

Details Fifth wheel unlocking device with fluid powered redundancy Fifth wheel unlocking device with fluid powered redundancy

1991-04-03

1993-01-05

Valenza, Joseph E.

Land vehicles

Wheeled

Articulated vehicle

280437, B62D 5310

Patent

active

051763966

ABSTRACT:
An accessory fluid cylinder and cam apparatus mounted under a fifth wheel may be energized by a tractor compressed air system to enable a driver to automatically and remotely unlock the fifth wheel jaw to release a trailer king pin when the tractor parking brake is engaged.

REFERENCES:
patent: 2471854 (1949-05-01), Bies et al.
patent: 2623753 (1952-12-01), Madigan
patent: 2861818 (1958-11-01), Kayler et al.
patent: 3002767 (1961-10-01), Gresko
patent: 3876239 (1975-04-01), Jackson et al.
patent: 3892426 (1975-07-01), Ferris
patent: 4477100 (1984-10-01), Elyakim
patent: 4871182 (1989-10-01), Altherr et al.
patent: 5028067 (1991-07-01), Madura

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