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. 01, 2009
Filed:
Jun. 06, 2005
Reinhard Koch, Wachenroth, DE;
Rainer Fuhrmann, Waischenfeld/Nankendorf, DE;
Christian Degenhardt, Clausthal-Zellerfeld, DE;
Bernd Stange, Osterode, DE;
Reinhard Koch, Wachenroth, DE;
Rainer Fuhrmann, Waischenfeld/Nankendorf, DE;
Christian Degenhardt, Clausthal-Zellerfeld, DE;
Bernd Stange, Osterode, DE;
Schaeffler KG, Herzogenaurach, DE;
IFT GmbH, Clausthal-Zellerfeld, DE;
Abstract
A check valve includes a housing with an inlet opening and an outlet opening along with a cage-like insert disposed therein as a support for a spring element and for guiding a closing body which can be moved against the spring element and which can be moved between a first end position, in which the spring body lies in contact with a seat to form a seal, and a second end position, in which the valve is completely open. The closing body, which is constructed cylindrically and pot-like, is guided with its cylindrical casing surface at the cage-like insert and in contact with the seat with a flat outer surface.