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:
Jul. 27, 1993
Filed:
May. 10, 1991
Applicant:
Inventor:
Roger L Atkins, Salt Lake City, UT (US);
Assignee:
Bunnell Incorporated, Salt Lake City, UT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251-9 ; 251-7 ;
Abstract
A multiple state pinch valve selectively controls the flow rate of fluid flowing within a flexible, resilient pinch tube. The valve includes a housing, and two biased pivot arm pinchers pivotally mounted in the housing on opposite sides of the pinch tube. Two springs bias respective ones of the pivot arm pinchers toward one another to pinch the tube, and two electromagnetic force field generators are mounted in the housing to selectively attract respective pivot arms away from one another to thereby selectively release some of the pinching of the tube.