Rotary dampers

Details Rotary dampers Rotary dampers

1997-08-29

1999-11-16

Schwartz, Christopher P.

Brakes

Internal-resistance motion retarder

Using a rotary-type fluid damper

188293, F16D 5700, F16D 5702

Patent

active

059840579

ABSTRACT:
A rotary damper has an inner member located within an outer member and an annular seal between the members enclosing a fluid-filled space bounded in part by mutually adjacent faces of the members. A viscous damping force is thereby generated by relative rotation of the members. The seal has a radially inner rim in sliding engagement with the inner member. A resilient flexible retainer held by the outer member bears on the seal inner rim, flexure of the retainer providing a predetermined axial sealing pressure on the rim. The seal includes a diaphragm portion exposed to atmospheric pressure and deformable to accommodate thermal expansion of the fluid in the sealed space.

REFERENCES:
patent: 3861503 (1975-01-01), Nash
patent: 4565266 (1986-01-01), Omata
patent: 4830151 (1989-05-01), Numata
patent: 5211267 (1993-05-01), Clark
patent: 5269397 (1993-12-01), Kawamoto et al.
patent: 5522485 (1996-06-01), Takahashi et al.

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