Rotary damper

Details Rotary damper Rotary damper

1986-02-19

1987-09-08

Reger, Duane A.

Brakes

Internal-resistance motion retarder

Using a rotary-type fluid damper

192 58C, F16D 5700

Patent

active

046918116

ABSTRACT:
A rotary damper comprises a cylindrical case closed at the bottom and having a housing containing a viscous liquid, a lid mounted in the case to close the housing and having a central circular hole, and a rotor having a shaft passing through the hole of the lid, a driven gear secured to its distal end and a brake plate rotatably disposed in the viscous liquid in the housing. The central circular hole has an increased diameter portion provided adjacent to the housing, and an O-ring is fitted on the shaft of the rotor and received in the increased diameter portion such that it is radially compressed by the peripheral wall of the increased diameter portion.

REFERENCES:
patent: 3211396 (1965-10-01), McQuillen
patent: 3385408 (1968-05-01), Manning
patent: 3861503 (1974-01-01), Nash
patent: 4351241 (1982-09-01), Brems et al.

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