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:
May. 28, 2002
Filed:
Dec. 08, 2000
V. Walter Hafner, Whittier, CA (US);
Ron Hahn, Yorba Linda, CA (US);
AcornVac, Inc., Chino, CA (US);
Abstract
An extractor valve assembly for controlling fluid flow in a fluid flow path. The extractor valve assembly has an elastic valve conduit having an outer surface with a pair of grooves. The pair of grooves are formed on opposite sides of the outer surface and intersect a pinch circumference of the elastic valve conduit, and are parallel to a central axis of the elastic valve conduit. When the elastic valve is pinched along the pinch circumference by pinch blades, pinch corners are formed at the pair of grooves, such that the pinching action completely blocks fluid flow. Additionally, first and second pairs of symmetric tabs are formed on the elastic valve on opposite sides of the pinch blades, to reduce stress along the portion of the pinch perimeter which comes in contact with the pinch blades.