Machine element or mechanism – Gearing – Gear and rotary bodies
Patent
1989-08-21
1991-09-10
Herrmann, Allan D.
Machine element or mechanism
Gearing
Gear and rotary bodies
74421R, 384129, F16H 5700, F16C 1702
Patent
active
050463772
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.
REFERENCES:
patent: 2145623 (1939-01-01), Hill
patent: 2589534 (1952-03-01), Buttolph
patent: 2718442 (1955-09-01), Winter
patent: 2828985 (1958-04-01), Ridenour
Dean John F.
Wilkes Steven F.
Herrmann Allan D.
Rockwell Automotive Body Systems Ltd
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