Fluid damper

Details Fluid damper Fluid damper

2005-12-06

2005-12-06

Bastianelli, John (Department: 3751)

Valves and valve actuation

Relatively movable valve elements form single port closure

C251S248000, C138S045000

Reexamination Certificate

active

06971631

ABSTRACT:
A damper utilizing a frame having a base and a wall portion extending outwardly from the same. The wall portion supports a stepped edge which is positioned to at least partially circumvent and aperture formed by the frame. A plurality of flanges are positioned in overlying relationship and slidably move relative to one another by a mechanical mechanism. A plurality of flanges ride on a stepped edge portion to cause fanning of the flanges across the aperture to selectively occlude the aperture or a portion thereof.

REFERENCES:
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patent: 4188862 (1980-02-01), Douglas, III
patent: 4232595 (1980-11-01), Cox
patent: 4458876 (1984-07-01), Schaeper et al.
patent: 4817508 (1989-04-01), Prochnow
patent: 6010113 (2000-01-01), Rotering

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