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US 5,937,462 AGranted
Self-inflatable air cushion
OwnerIng Chung Huanginventor
Life of this patent
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Abstract
A self-inflatable air cushion which includes a support chamber mounted in a sole of a shoe and holding a fluid, a collapsible plenum chamber surrounded by the support chamber and partially protruding over the top of the sole and having a top air hole, passage means connected between the support chamber and the plenum chamber, and one-way valve mounted in the passage means to let air flow move in one direction from the plenum chamber to the support chamber upon compression of the plenum chamber.
Claims8
A self-inflatable air cushion comprising:
- a support chamber having a three-dimensional body adapted for holding a fluid and a top recess at said three-dimensional body for receiving a plenum chamber;
- a hollow collapsible plenum chamber having a variable volume which is changed when said plenum chamber is collapsed;
- passage means connected between said support chamber and said plenum chamber;
- and
- at least one pressure accumulation chamber connected between said plenum chamber and said support chamber by said passage means, said pressure accumulation chamber having an inlet connected to a first one-way valve means mounted in said passage means and an outlet connected to a second one-way valve means mounted in said passage means, said plenum chamber communicating with said pressure accumulation chamber by fluid flow directly from said plenum chamber and moving through said passage means via said first one-way valve means so that reverse flow is prevented from said pressure accumulation chamber to said plenum chamber.
2 more elements
Dependencies are inferred from the claim text.