Electric motor drive with a worm

Details Electric motor drive with a worm Electric motor drive with a worm

2006-01-31

2006-01-31

Fenstermacher, David (Department: 3682)

Machine element or mechanism

Gearing

Directly cooperating gears

C074S425000, C185S011000

Reexamination Certificate

active

06990873

ABSTRACT:
The invention relates to an electromotive drive comprising an electric motor, having a driving pinion which meshes with a toothed wheel to form a first gear speed. A worm is connected to an output shaft of the toothed wheel in a fixed manner, enabling a worm wheel to be driven. The worm and the worm wheel form a second gear speed, and the shaft of the worm wheel forms the output shaft of the electromotive drive. The output shaft of the electromotive drive can be rotatably driven between a starting position and an end position. When the electric motor is not fed by a current, the output shaft of the toothed wheel can be rotatably driven by a pull-back spring in the rotational direction towards the starting position. The second gear speed is a non-self-locking gear speed.

REFERENCES:
patent: 4533114 (1985-08-01), Cory et al.
patent: 4573723 (1986-03-01), Morita et al.
patent: 5722510 (1998-03-01), Viale
patent: 5986369 (1999-11-01), Hanley et al.
patent: 198 55 613 (1999-06-01), None
patent: 1 101 919 (2001-05-01), None
patent: 2 009 365 (1994-03-01), None
Derwent Abstract—DE 19855613A1; Jun. 17, 1999; Kabushiki Kaisha Topcon, JP-Tokyo.
Derwent Abstract—RU 2 009 365C1; Mar. 15, 1994; Klimov, Russia.

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