Implements or apparatus for applying pushing or pulling force – Fluid pressure – Vehicle attached
Patent
1998-09-25
2000-07-25
Watson, Robert C.
Implements or apparatus for applying pushing or pulling force
Fluid pressure
Vehicle attached
254122, B66F 324
Patent
active
060927887
ABSTRACT:
A pneumatic jack is provided including a frame having a rigid top member, a rigid bottom member, and an elevation assembly coupled therebetween for maintaining the top member above the bottom member. Also included is an inflatable chamber situated between the top member and the bottom member of the frame with a valve for receiving air to selectively elevate the top member of the frame with respect to the bottom member.
REFERENCES:
patent: 2610824 (1952-09-01), Grier
patent: 3891108 (1975-06-01), Traficant
patent: 5938179 (1999-08-01), Beukers et al.
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