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:
Mar. 07, 2000
Filed:
Jul. 28, 1999
Michael Haag, Nuremberg, DE;
Ina Walzlager Schaeffler oHG, , DE;
Abstract
A vane-type camshaft adjusting device for an internal combustion engine, comprising a drive pinion (2) connected in driving relationship to a crankshaft, and a winged wheel (8) connected rotationally fast to a camshaft (7), the drive pinion (2) comprises a hollow space (6) which is defined by a circumferential wall (3) and two side walls (4, 5), into which hollow space (6) is inserted the winged wheel (8) having at least one wing (10) on its wheel hub (9), limiting walls (11) defining at least one working chamber (13) in the hollow space (6) of the drive pinion (2), which working chamber (13) is divided into two hydraulic pressure chambers (16, 17) by a wing (10) of the winged wheel (8) with the limiting walls (11) of the drive pinion (2) in sealing contact by axial sealing elements or by sealing gaps with the wheel hub (9) of the winged wheel (8), while the wings (10) of the winged wheel (8) are in sealing contact by axial sealing elements with the circumferential wall (3) of the drive pinion (2) wherein the free end face (14) of each wing (10) of the winged wheel (8) and/or the free end face (12) of each limiting wall (11) of the drive pinion (2) comprises an elastic sealing spring (18) which is configured as a one-piece sealing element between two pressure chambers (16, 17) of the device (1) and which can be pressed by the pressure of the hydraulic pressure medium against the inner surface of the circumferential wall (3) of the drive pinion (2) or against the wheel hub (9) of the winged wheel (8).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile