Camper lift jack and hand crank

Details Camper lift jack and hand crank Camper lift jack and hand crank

1988-04-21

1988-11-15

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Vehicle-body lifters

811242, 811247, 81119, 254DIG3, B60P 332

Patent

active

047843691

ABSTRACT:
A lifting jack for campers or similar structures. The jack includes a base with extensible tubes and a hand crank for raising and lowering one of the tubes to a desired height. The hand crank includes a handle which slips over a rotatable shaft and serves to rotate the shaft and raise or lower the tube. The handle also defines a hex bore for tightening the hex nuts associated with the jack mounting bracket.

REFERENCES:
patent: 1181565 (1916-05-01), Block
patent: 1550436 (1925-08-01), Hall
patent: 2780387 (1957-02-01), Hertzfeldt
patent: 3698758 (1972-10-01), Dodgen
patent: 4586696 (1986-05-01), Mugford et al.

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