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:
Aug. 06, 2002
Filed:
Apr. 24, 2001
Alan R. Freigang, Scotts, MI (US);
James A. Beverly, Kalamazoo, MI (US);
Kurt R. Gerlofs, Kalamazoo, MI (US);
Dana Corporation, Toledo, OH (US);
Abstract
An improved fluid flow valve ( ) for a fluid flow control system. The flow valve ( ) includes a flow-regulating assembly ( ) having a housing ( ) having a piston bore ( ) within which is slideably disposed a piston-like member ( ). The piston-like member ( ) has a primary flow passage ( ) and at least one secondary flow passage ( ) formed therein. A first portion ( ) of the pistonlike member ( ) is configured for mating with a seat ( ) of the housing ( ), and a resilient member ( ) biases the piston-like member ( ) away from the seat ( ). When at least a predetermined fluid pressure differential exists, the first portion ( ) mates with the seat ( ) and causes the at least one secondary flow passage ( ) to be at least substantially closed such that fluid can substantially flow only through the primary flow passage ( ).