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:
Dec. 19, 1978
Filed:
Jun. 01, 1977
Johannes-Gerhard Bertling, Vaihingen, Enz, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A pressure control valve for regulating the gas pressure in a conduit is composed of two chambers, one of which receives control fluid under well-defined pressure for the purpose of adjusting the pressure of the medium in the second chamber and in the conduit to follow changes of the control fluid pressure. A soft, non-resilient double diaphragm divides the two chambers and the space between the two diaphragms is accessible from the outside and may be supplied with gas or fluid at higher pressure. The valve has a compensating piston which is attached to the diaphragms and glides in a blind bore the end of which communicates with the second chamber in which the pressure is controlled.