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. 25, 2001
Filed:
Apr. 19, 2000
Applicant:
Inventor:
Manfred Unsöld, Rechtenbach, DE;
Assignee:
Hydraulik-Ring GmbH, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01C 1/908 ;
U.S. Cl.
CPC ...
F01C 1/908 ;
Abstract
A hydraulic positive displacement machine has rotating conveying elements whose end faces are sealed by pressure plate. This pressure plate is loaded by a control valve with hydraulic pressure in order to adjust the size of the sealing gap. The control valve has a hollow piston in which a metering orifice is located. A return connector, a connector communicating with a consumer, and a hydraulic control connector connected to the pressure plate can be controlled by the hollow piston with its metering orifice.