The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 06, 2001
Filed:
Apr. 13, 1998
Applicant:
Inventor:
Swi Barak, Caesarea, IL;
Assignee:
Societe des Produits Nestle SA, Vevey, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61M 3/700 ; A61M 3/926 ; F16K 1/514 ;
U.S. Cl.
CPC ...
A61M 3/700 ; A61M 3/926 ; F16K 1/514 ;
Abstract
The valve assembly has inlet and outlet members with valve elements disposed between the two members. The valve is a resilient membrane having one or more through holes. When there is no pressure differential across the valve, the hole walls in the membrane collapse inwards closing off the valve against liquid flow. At or above a threshold pressure differential across the valve, the membrane is stretched which opens up the hole or holes to allow the passage of liquid.