Pneumatic jack

Details Pneumatic jack Pneumatic jack

1998-08-28

2000-07-04

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Fluid pressure

Vehicle attached

B66F 324

Patent

active

060827084

ABSTRACT:
A relatively low profile pneumatic jack comprising a bellows made from a flexible member having at least one convolution for lifting heavy objects, such as vehicles. The bellows is located between a lift member that abuts the object to be lifted and a base member which abuts the surface from which the object is being lifted (i.e., the ground). A top plate and a bottom plate connect to the bellows and the lift and base members to form an air-tight chamber within the bellows. An inlet valve is connected to the chamber to allow the introduction of pressurized air in the chamber. A valve assembly having safety systems therein to prevent overfilling of the jack is disposed between the supply of pressurized air and the inlet valve. A safety system inside the chamber further prevents overfilling of the jack.

REFERENCES:
patent: 3523679 (1970-08-01), Clay
patent: 3695582 (1972-10-01), Clay
patent: 3730481 (1973-05-01), Ekonen
patent: 3743248 (1973-07-01), Moor
patent: 3751007 (1973-08-01), Hollerith
patent: 3993286 (1976-11-01), Greene et al.
patent: 4021018 (1977-05-01), Dasan
patent: 4913402 (1990-04-01), McJunkin

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