Rotary damper

Details Rotary damper Rotary damper

2005-01-11

2005-01-11

Butler, Douglas C. (Department: 3683)

Brakes

Internal-resistance motion retarder

Having a thrust member with a variable volume chamber

C188S322500, C016S051000

Reexamination Certificate

active

06840356

ABSTRACT:
A rotary damper includes a cylindrical member having walls on an inner peripheral surface of a cylindrical chamber along a radial line, and a rotor member having vanes moving along the inner peripheral surface of the cylindrical chamber. A resistance force of a viscous fluid filled in the cylindrical chamber is applied to the vanes when the cylindrical member rotates relative to the rotor member. The rotor member is formed of a thermoplastic resin containing inorganic filler or fiber. Thus, the rotor member having high strength can be obtained.

REFERENCES:
patent: 2027423 (1936-01-01), Gardiner
patent: 5381877 (1995-01-01), Kobayashi
patent: 5530989 (1996-07-01), Remmert et al.
patent: 6341677 (2002-01-01), Oliver et al.
patent: 20020125087 (2002-09-01), Namiki et al.
patent: 20030155196 (2003-08-01), Nishiyama
patent: 224543 (1989-09-01), None
patent: 8-270703 (1996-10-01), None

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