Implements or apparatus for applying pushing or pulling force – Vehicle-body lifters
Patent
1975-12-08
1977-04-05
Smith, Al Lawrence
Implements or apparatus for applying pushing or pulling force
Vehicle-body lifters
B60P 164
Patent
active
040158225
ABSTRACT:
A camper jack for mounting on a camper body, the jack having an extensible leg projectable from a hollow jack housing and attached to the camper body along the length of the housing. A piston cooperating in a cylinder in the extensible leg extends the leg from the housing. A hydraulic fluid reservoir is formed in the extensible leg in an annular space surrounding the cylinder. A valve block is coextensive with the extensible leg at the foot of the leg and contains the valves and pumping piston for the jack. Valving in the valve block permits manual extension and retraction of the extensible leg.
REFERENCES:
patent: 2583923 (1952-01-01), Anschvetz
patent: 3549027 (1970-12-01), Batson
patent: 3758074 (1973-09-01), Jeffries et al.
patent: 3897044 (1975-07-01), Tallman
Smith Al Lawrence
Watson Robert C.
Workman H. Ross
Young J. Winslow
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