Machine element or mechanism – Elements – Flywheel – motion smoothing-type
Patent
1988-06-30
1990-01-16
Lindsey, Rodney M.
Machine element or mechanism
Elements
Flywheel, motion smoothing-type
16 82, 188290, F16F 1510
Patent
active
048935220
ABSTRACT:
A rotary damper includes a cylindrical rotor for receiving a torque input, a housing having a shaft disposed within the cylindrical rotor and a cylindrical wall surrounding the shaft, a viscous fluid interposed between the cylindrical rotor and the housing shaft, a coil spring provided between the inner periphery of the cylindrical wall and the outer periphery of the cylindrical rotor and having one end secured to the housing and the other end secured to the cylindrical rotor, a cover secured to an open end of the cylindrical wall and having an inner surface facing the end surface of the cylindrical rotor, an excursion groove formed within the inner surface of the cover or within an end surface of the cylindrical rotor and having an end portion defined as a heart-like cam groove, and an operating pin provided upon the cover or upon the cylindrical rotor and capable of excursion along the excursion groove. The coil spring is wound as a result of rotation caused by means of the torque input received by means of the cylindrical rotor.
REFERENCES:
patent: 4550476 (1985-11-01), Omata
patent: 4571773 (1986-02-01), Yuda
patent: 4576252 (1986-03-01), Omata
patent: 4614004 (1986-09-01), Oshida
patent: 4618039 (1986-10-01), Omata
patent: 4638528 (1987-01-01), Omata
patent: 4694530 (1987-09-01), Foggini
patent: 4697673 (1987-10-01), Omata
Lindsey Rodney M.
Nifco Inc.
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