Fluid operated device

Details Fluid operated device Fluid operated device

1992-08-03

1993-07-20

Trettel, Michael F.

Beds

Bedclothing

And means to facilitate changing thereof

5450, 5455, 36 35B, A47C 2708

Patent

active

052281566

ABSTRACT:
A fluid operated device comprises a casing having an enclosing wall which is rigid at least in part to maintain a volume of said casing; a squeeze unit securely provided in said casing and having a squeezable wall confining a space; a fluid operating chamber formed in said casing around said squeezable wall to receive a first fluid which pressurizes said squeezable wall to perform a squeezing action; said enclosing wall further having at least one opening communicated with said space.

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patent: 5060641 (1991-10-01), Tones

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