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US 5,228,156 AGranted
Fluid operated device
OwnerJohn Wanginventor
Life of this patent
Estimating the term…
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.
Claims4
A fluid operated device comprising:
- a casing having an enclosing wall which is rigid at least in part to maintain a volume of said casing and which has a fluid inlet, a first end wall, and a second end wall opposite to said first end wall;
- a squeeze unit securely provided in said casing and having a resiliently deformable wall defining a space, said resiliently deformable wall having a third end secured to said first end wall and an opposite fourth end secured to said second end wall;
- a fluid operating chamber formed in said casing around said resiliently deformable wall to receive a first fluid which pressurizes said resiliently deformable wall to perform a deforming action;
- said enclosing wall further having at least one opening communicating with said space;
- an inflatable article connected to said casing and communicating with said opening, said space serving as a reservoir to receive a second fluid, said second fluid capable of inflating said inflatable article when said resiliently deformable wall is pressurized.
2 more elements
Dependencies are inferred from the claim text.