Machine element or mechanism – Gearing – Directly cooperating gears
Patent
1995-09-28
1998-05-05
Bonck, Rodney H.
Machine element or mechanism
Gearing
Directly cooperating gears
368157, 368160, G04C 314
Patent
active
057460922
ABSTRACT:
A viscous coupling gear device has a first case having a protrusion extending from a surface thereof, and a second case having a surface facing the surface of the first case and a protrusion extending from the surface of the second case. A gear has a driving portion for driving engagement with a first rotary member undergoing intermittent rotation and for transmitting intermittent rotation to the gear, a tubular portion extending from the gear and mounted on the protrusion of the first case for relative rotation therewith, and a tubular wall portion extending from the gear and disposed coaxially with and spaced from the tubular portion to define a cavity therebetween, the protrusion of the second case extending into the cavity and defining, together with the cavity and the tubular wall portion, a clearance. A driving member engages with a second rotary member for transmitting rotation of the gear to the second rotary member. A viscous fluid is disposed in the clearance for absorbing a velocity variation due to the intermittent rotation of the first rotary member so that the driving member transmit a smooth and continuous rotary motion to the second rotary member.
REFERENCES:
patent: 3961213 (1976-06-01), Koike et al.
patent: 4885730 (1989-12-01), Miyazawa
patent: 4910721 (1990-03-01), Hayakawa et al.
patent: 5151886 (1992-09-01), Miyazawa
patent: 5197045 (1993-03-01), Miyazawa
Bonck Rodney H.
Grabow Troy
Seiko Clock Inc.
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