Trailer hydraulic lift

Details Trailer hydraulic lift Trailer hydraulic lift

1992-02-27

1993-06-08

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Vehicle attached jack

Semi-trailer landing gear

254423, B60S 904

Patent

active

052172090

ABSTRACT:
Improvements in the static trailer support system for a trailer normally pulled by a truck or cab/trailer assembly; retractable support legs for the front end of a trailer section of a truck/trailer or cab/trailer assembly enabling the ready separation of the truck or cab from the trailer assembly and, thereafter, the indefinite support of the trailer assembly in the stopped position; hydraulic cylinders and inter connections thereof that operate to provide an entirely new, horizontally retractable support system for the front end of the trailer, as well as an entirely downwardly extendable support system when the trailer and its drag are in stopped position; a construction and process or procedure for using same which either extends an entirely retractable pair of hydraulic cylinder support legs to carry the weight of the front end of the trailer when the latter is in stopped position or, once the front end of the trailer is coupled with a drag truck or drag cab, substantially entirely retracts the entire support system against the underside of the trailer.

REFERENCES:
patent: 2442881 (1948-06-01), Soskin
patent: 2546203 (1951-03-01), Tucker
patent: 2942676 (1960-06-01), Kraus
patent: 3169012 (1965-02-01), Fagan
patent: 3255995 (1966-06-01), Bartlett
patent: 3874696 (1975-04-01), Gardner et al.

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