Rotary damper with grooves and wall spaces

Details Rotary damper with grooves and wall spaces Rotary damper with grooves and wall spaces

1996-05-21

1998-02-17

Ballato, Josie

Brakes

Internal-resistance motion retarder

Using a rotary-type fluid damper

1883225, F16F 912

Patent

active

057183090

ABSTRACT:
A rotary damper is formed of a first member including a driven gear on one side, and one of a supporting shaft and an inner cylindrical projection to form a circular fitting dent therein on a side opposite to the one side; and a second member including the other of the supporting shaft and the inner cylindrical projection on one side thereof. The supporting shaft is inserted into the fitting dent of the inner cylindrical projection to connect the first and second members together. At least one of the supporting shaft and the inner cylindrical projection may have grooves on circumferential surfaces facing each other to fill viscous fluid therein. An outer cylindrical projection situated outside the inner cylindrical projection or an inner cylindrical partition wall situated outside the supporting shaft may have discontinuous portions to fill the viscous fluid therein. Thus, the viscous fluid is fully and uniformly filled in the spaces to thereby obtain a desired damper effect for a long time.

REFERENCES:
patent: 4513473 (1985-04-01), Omata
patent: 4527675 (1985-07-01), Omata et al.

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