Control device for a valve with a spiral spring

Details Control device for a valve with a spiral spring Control device for a valve with a spiral spring

1991-11-13

1993-05-25

Graham, Matthew C.

Brakes

Internal-resistance motion retarder

Using a rotary-type fluid damper

185 39, 185 45, F16D 5700

Patent

active

052131831

ABSTRACT:
Control device for a valve provided with a spiral spring whose release brings about rotation of the drive shaft of the stopper of the valve. Rotation of the auxiliary shaft of the control device is dependent upon a shock absorbing device, wherein rotation of the auxiliary shaft drives a rotating piston arranged in a sealed housing containing a viscous fluid.

REFERENCES:
patent: 3422843 (1966-10-01), Blackman et al.
patent: 4697673 (1987-10-01), Omata
patent: 4768630 (1988-09-01), Aubry et al.
patent: 4842106 (1989-06-01), Ludwig et al.

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