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:
Jan. 05, 1988
Filed:
Jul. 18, 1986
Kurt M Hummel, Wuppertal, DE;
Hermann Hemschedit Maschinenfabrik GmbH & Co., Wuppertal, DE;
Abstract
An hydraulic rotation damper comprises a bearing housing with inner stator vanes and a rotor with rotor vanes, the rotor being arranged on a carrier arm journal which is mounted in bearings in the bearing housing with the stator vanes and the rotor vanes forming working chambers. At least one damping valve is provided for transferring working medium from pressure-loaded working chambers into unloaded working chambers. Further, the working chambers are closed at both ends by end walls containing valve-controlled passages leading into annular gaps which are separated by the end walls from the working chambers. This permits pressure medium at a pressure corresponding to the working pressure in the respective working chambers to be fed to the annular gaps where the pressure medium applies pressure to the outer surfaces of the end walls of the working chambers to prevent axial displacement of those walls.