Rotary retardation devices

Details Rotary retardation devices Rotary retardation devices

1981-12-04

1985-02-05

Butler, Douglas C.

Brakes

Internal-resistance motion retarder

Using viscosity of fluid medium

74574, 188290, F16F 910

Patent

active

044973934

ABSTRACT:
A rotary retardation device utilizing viscous fluid responsive to angular velocity in which the viscous fluid is retained in a cavity, one wall of which is a flexible deformable member, the fluid being sealed in the cavity, and a relatively movable rotary member bearing on the flexible member in a moving path to respond in rotation to the action of the viscous fluid in the cavity.

REFERENCES:
patent: 2905430 (1959-09-01), Deist
patent: 3078966 (1963-02-01), Thomas
patent: 3321052 (1967-05-01), Ramoneda et al.
patent: 3353632 (1967-11-01), Perhach
patent: 3381781 (1968-05-01), Summerville, Jr.
patent: 3561570 (1971-02-01), Sundermann
patent: 3648815 (1972-03-01), Wochner
patent: 3871496 (1975-03-01), Wigal
patent: 4257495 (1981-03-01), Perry
patent: 4316535 (1982-02-01), Brems et al.

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