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:
Aug. 05, 2003
Filed:
Apr. 23, 2002
Jens Schäfer, Herzogenaurach, DE;
Michael Haag, Nürnberg, DE;
Ina Walzlager Schaeffler oHG, , DE;
Abstract
A hydraulic camshaft adjusting device, which comprises a drive wheel ( ) and a pivotal impeller wheel ( ) connected in a rotationally fixed manner to a camshaft ( ), the drive wheel ( ) comprises a. cavity formed by a peripheral wall ( ) and two lateral walls, in which cavity at least one hydraulic working space ( ) is formed by at least two delimitation walls ( ) and the pivotal impeller wheel ( ) has at least one radial blade ( ), and with each blade ( ) divides a hydraulic working space ( ) into two hydraulic pressure chambers ( ), which are sealed off from one another by sealing elements ( ) disposed between the drive wheel ( ) and the pivotal impeller wheel ( ), the pivotal impeller wheel ( ) can be mechanically coupled to the drive wheel ( ) in a preferred basic position, a locking element ( ) disposed on the drive wheel ( ) being movable by a spring clement ( ) into a complementary seating ( ) in the drive wheel ( ).