Rotary damper

Details Rotary damper Rotary damper

1991-03-13

1991-11-12

Spruill, Robert L.

Brakes

Internal-resistance motion retarder

Having a thrust member with a variable volume chamber

188287, 16 58, 16 82, F16F 914, E05F 322

Patent

active

050640330

ABSTRACT:
A rotary damper is disclosed having a hollow casing and a power receiving shaft extending exteriorly of the casing. The power receiving shaft turns a movable vane within the casing to pressurize a working fluid. A stationary partition member including a dividing wall and a dividing vane is positioned within the casing and journals the movable vane for rotation within the casing. The movable vane is provided with a through hole equipped with a one-way valve and the dividing wall is provided with a plurality of arcuately spaced orifices. The orifices are positioned to be serially covered by the movable vane as it is rotated to thereby provide increased resistance to fluid flow as the movable vane is further rotated.

REFERENCES:
patent: 1449652 (1923-03-01), Capra
patent: 1548501 (1925-08-01), Arnold
patent: 1578976 (1926-03-01), Fowble
patent: 4098597 (1978-07-01), Nebuling

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