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. 10, 1991
Filed:
Aug. 21, 1989
Steven F Wilkes, Wolverhampton, GB;
John F Dean, Bromsgrove, GB;
Abstract
Power actuator unit for servo-drive of motor vehicle body closures e.g. centrally controlled door latches and locks, window winders etc and including a power transmitting drive train wherein the latter includes a female bearing surface, e.g. the bore (34) of a boss (30) of a gear wheel or pinion (31) which is a running fit on a complementary male bearing surface e.g. a metal shaft (32). One surface e.g. of the shaft is at constant radius from the axis of relative revolution of the surfaces e.g. is cylindrical; and the other surfaces e.g. the bore (34) is formed to have a plurality of facets or other sections e.g. by being square in diametral cross section to provide line or point contact with the one surface at sufficient angularly spaced locations to ensure true running but the facets or sections not being otherwise in contact with the one surface e.g. of the shaft to prevent orbital 'racing' of the one on the other particularly where the wheel etc is axially out of balance and particularly during high speed freewheeling which would otherwise give rise to lack of free movement and unpleasant vibration and noise.