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:
Apr. 15, 2003
Filed:
May. 23, 2001
Rudolf Heinz, Renningen, DE;
Wolfgang Stoecklein, Stuttgart, DE;
Klaus-Peter Schmoll, Lehrensteinsfeld, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A valve for controlling fluids is described, wherein a valve closing member ( ) divides a low-pressure region ( ) in the valve ( ) from a high-pressure region ( ), and a filling device ( ) is provided to compensate for a leakage quantity from the low-pressure region ( ) by withdrawal of hydraulic fluid from the high-pressure region ( ). The filling device ( ) is embodied in a valve body ( ) with a conduitlike hollow chamber ( ) in which a solid body ( ) is disposed in such a way that a gap ( ) is formed between the solid body ( ) and the valve body ( ). The material of the solid body ( ) has a coefficient of thermal expansion that is so much greater than that of the material of the valve body ( ) that with increasing temperature, a viscosity-dictated increase in the volumetric flow around the solid body ( ) is at least partly limited (FIG. ).