Brakes – Internal-resistance motion retarder – Using a rotary-type fluid damper
Patent
1995-01-31
1995-10-24
Oberleitner, Robert J.
Brakes
Internal-resistance motion retarder
Using a rotary-type fluid damper
188296, 1883225, 192 12BA, 16 85, F16D 5702
Patent
active
054602521
ABSTRACT:
A one-way rotary damper comprising a housing, a rotor consisting of a braking disk accommodated in a cavity of the housing and a shaft unitary with the braking disk and projecting toward the outside of the housing, viscous oil filling the housing cavity for applying shearing resistance against rotation of the rotor, a driven gear rotatably mounted upon the end of the rotor shaft projecting outside the housing so as to be free to rotate with respect thereto and formed on its surface facing the housing with a concentric depression consisting of a shallow circular depression and a deep outer annular groove surrounding the circular depression, a coupling disk which is identical in diameter with the circular depression and is fixed on the end of the rotor shaft projecting outside the housing so as to be disposed upon the circular depression, and a clutch spring disposed so as to extend along a radially outer surface of the coupling disk and a radially inner surface of the outer annular groove for enabling the driven gear to rotate freely when a torque is applied thereto in one direction and for rotating the rotor together with the driven gear when a torque is applied thereto in the other direction.
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patent: 5311877 (1995-01-01), Kobayashi
Kosugi Akio
Nishiyama Yoshiaki
Shibanushi Yoshio
Illinois Tool Works Inc.
Oberleitner Robert J.
Schwartz Chris
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