Rotating-piston type rotary damper

Details Rotating-piston type rotary damper Rotating-piston type rotary damper

1993-12-07

1995-01-17

Oberleitner, Robert J.

Brakes

Internal-resistance motion retarder

Using a rotary-type fluid damper

188293, F16D 5702

Patent

active

053818776

ABSTRACT:
A rotating-piston type rotary damper includes a rotor of substantially triangular prism shape, a rotor housing having an operation chamber provided with a stationary gear with external teeth, a main shaft having an operation shaft portion and an eccentric, and a lid having a through hole for permitting passage therethrough of the operation shaft portion. The rotor has a central circular through hole formed normal to its end faces so that one open side thereof serves as a fitting hole for the eccentric and the other open side thereof is provided therein with a gear with internal teeth for engagement with the external teeth and is accommodated in the operation chamber to define volume-variable compartments containing viscous liquid. The rotor has communication holes for transferring the viscous liquid in a volume-variable compartment of decreasing volume when the rotor is rotated into adjacent volume-variable compartments.

REFERENCES:
patent: 5092433 (1992-03-01), Endo
patent: 5277282 (1994-01-01), Umemura
patent: 5301775 (1994-04-01), Nedbal et al.

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