Pneumatic lifting device

Details Pneumatic lifting device Pneumatic lifting device

1976-11-09

1977-07-19

Smith, Al Lawrence

Implements or apparatus for applying pushing or pulling force

Fluid pressure

Vehicle attached

B66F 324

Patent

active

040364720

ABSTRACT:
A flat, rectangular, inflatable bag type lifting device includes two rectangular walls interconnected at their marginal portions to enclose an inflation chamber or cavity. Each of the two walls have length to width ratios greater than one and include layers of rubberized mutually parallel cords extending at a preselected acute angle relative to the longitudinal center line of the wall in which they are contained with cords of immediately adjacent layers being in opposite directions. When inflated, the bag reduces in length due to the movement of cords to a larger acute angle and thereby achieves a lift height effective for lifting or jacking up structures such as automobiles.

REFERENCES:
patent: 3346885 (1967-10-01), Merriman

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