Landing gear actuator

Details Landing gear actuator Landing gear actuator

1981-01-22

1983-09-06

Peters, Jr., Joseph F.

Land vehicles

Wheeled

Attachment

74 34, 91372, B60S 902

Patent

active

044025262

ABSTRACT:
The legs of the landing gear of a semi-trailer may be automatically extended and retracted by a pneumatically operated actuator adapted to be connected to the crankshaft of the landing gear and adapted to rotate the cross-shaft of the landing gear selectively in either direction at a high or low speed. The crankshaft is rotated by gears and ratchets which are driven by pawls adapted to be reciprocated by an air-actuated cylinder and adapted to be alternately positioned in active and inactive positions. The flow of pressurized air to the cylinder is controlled by a cycle valve and an on-off valve, the latter being capable of turning off the actuator automatically when the legs are fully retracted.

REFERENCES:
patent: 3622178 (1971-11-01), Tantlinger et al.
patent: 3729212 (1973-04-01), Claflin et al.
patent: 3861648 (1975-01-01), Glassmeyer
patent: 4116315 (1978-09-01), Vandenberg
patent: 4281852 (1981-08-01), Konkle
Brochure-Gear Mate-Northwest Manufacturing Corporation (4 pages).
Brochure-Gear Mate-Northwest Manufacturing Corporation (8 pages).

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