Rotary damper

Details Rotary damper Rotary damper

2005-05-31

2005-05-31

Williams, Thomas (Department: 3683)

Brakes

Internal-resistance motion retarder

Having a thrust member with a variable volume chamber

C188S310000

Reexamination Certificate

active

06899208

ABSTRACT:
A damping device utilizing a viscous fluid to stabilize rotational movement of a shaft. The damper includes a cylindrical body with multiple chambers containing a viscous fluid and a rotor with multiple vanes rotatably mounted within the body. The rotor has a hollow cylindrical center with passages that allow communication of fluid during rotational movement between the compressing and expanding chambers. A centrally located and axially adjustable valve acts to restrict the flow of fluid through the passages and thereby adjust the damping effect of the damper.

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patent: 6318522 (2001-11-01), Johnston et al.
patent: 6536565 (2003-03-01), Oliver et al.

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