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:
Oct. 06, 2009
Filed:
Oct. 19, 2005
Applicant:
Klemens Strauss, Frammersbach, DE;
Inventor:
Klemens Strauss, Frammersbach, DE;
Assignee:
Bosch Rexroth AG, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 11/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A directional control seat valve includes a piston that is biased against a valve seat by means of a spring. The piston is associated with a compensating piston whose end face subjected to the pressure at one of the ports of the directional control valve is arranged before the valve seat when viewed in the closing direction.