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:
Mar. 27, 2001
Filed:
Dec. 09, 1999
Carl G. Gluf, Jr., Rochester Hills, MI (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A by-pass solenoid (,) with an integral check valve assembly (,) for by-passing excess pump (,) fluid flow. The integral check valve assembly (,) positioned in a first chamber (,) of a valve sub-assembly (,) allows fluid flow from an inlet (,) to an outlet port (,) in a normal mode of operation. Upon actuation of the solenoid sub-assembly (,), the by-pass solenoid (,) diverts excess fluid flow to a by-pass port (,) for re-circulation during periods when fluid flow demand is low and still maintains a fairly constant system pressure. Check valve assembly (,) prevents re-circulated fluid from directly entering the working hydraulic circuit and maintains system pressure. The present invention advantageously provides a compact integral fluid flow control device for bleeding excess pump flow.