Tractor/trailer safety device

Details Tractor/trailer safety device Tractor/trailer safety device

1979-02-21

1981-05-26

Pekar, John A.

Land vehicles

Wheeled

Articulated vehicle

116 32, 188 4R, 340687, B62D 5306

Patent

active

042694264

ABSTRACT:
A tractor/trailer safety device includes a control mounted in the cab for operation by the driver, when he feels the trailer beginning to jackknife, to disconnect the trailer from the tractor. The control connects a source of pneumatic pressure to a piston which, when operated, lifts a bearing pin to separate the trailer from the tractor. Momentarily afterward, a pair of skid plates attached by chains are released and guided to drop in front of the front wheels of the trailer and the emergency brakes are applied to bring the trailer to a fast halt. Simultaneously, a warning flasher and distress signal system on the trailer is actuated to warn traffic and summon assistance.

REFERENCES:
patent: 2473050 (1949-06-01), Camp
patent: 2815224 (1957-12-01), Waters
patent: 2868333 (1959-01-01), Willison
patent: 4052695 (1977-10-01), Myers
Design Synthesis of Safety Devices on a Logging Trailer: Part I, Bhushan and Feder, Apr. 1975, ASME Publication 75-DE-54.
Design Synthesis of Safety Devices on a Logging Trailer: Part II, Bhushan, Apr. 1975, ASME Publication 75-DE-55.

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