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:
Sep. 28, 1976
Filed:
Nov. 21, 1975
Applicant:
Inventor:
James A Bernard, Dayton, OH (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251-4 ; 251137 ; 251139 ;
Abstract
A fluid control valve for a fluid system, such as an air conditioning system, in which a flow passage is defined by a radially flexible tubular member so that the flow area of the valve therethrough is variable. The tubular member and an encircling magnetic field producing means define an annular space therebetween containing a plurality of small iron particles which are attracted to an intermediate portion of the annular space when a magnetic field is produced, thereby causing inward movement of the flexible tubular member to decrease the valve's flow area.