Title: Elastic check valve and method of construction

Abstract: An elongated thin walled elastic member arcuately shaped and connected on the inside wall of a pipe section having a portion deformable under fluid pressure permitting fluid flow in one direction only.

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Inventors: French, George F. (Oakland, CA, US)

Application Number: 466288
Filing Date: 1974-05-02
Publication_date: 1976-01-13
Assignee:
Primary Class(es): 137/852
Other Classes:
US Patent Ref:

201880	Apr, 1878	Johnson	137/525.
2247363	Jul, 1941	Dunn	137/525.
3822720	Jul, 1974	Souza	137/525.

Other Refs: 183,622155,590

Mar, 1963	SW
Apr, 1947	AU

Primary Examiner: Nilson, Robert G.
Assistant Examiner:
Attorney: Cypher; James R.