Rotary damper

Details Rotary damper Rotary damper

2007-04-24

2007-04-24

Torres, Melanie (Department: 3683)

Brakes

Internal-resistance motion retarder

Using a rotary-type fluid damper

C188S307000

Reexamination Certificate

active

10950573

ABSTRACT:
A rotary damper includes a housing; a viscous fluid filled in the housing; a rotor disposed inside the housing and having a shaft part partially protruding from the housing and a resistance part provided on the shaft part for moving in the viscous fluid inside the housing; and a seal member for sealing between the shaft part and the housing to prevent leakage of the viscous fluid. The rotary damper further includes a first sloping part provided on an upstream side of the rotating resistance part and having a distance relative to an inner surface of the housing gradually decreasing toward a downstream side; and a second sloping part provided on a downstream side of the rotating resistance part and having a distance relative to the inner surface of the housing gradually increasing toward a downstream side.

REFERENCES:
patent: 4674608 (1987-06-01), Morris et al.
patent: 6729448 (2004-05-01), Takahashi
patent: 2004/0045398 (2004-03-01), Hayashi
patent: 0 639 727 (1995-02-01), None
patent: 4-34015 (1992-06-01), None
patent: 8-177939 (1996-07-01), None

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