Damper of hydraulic pilot valve

Details Damper of hydraulic pilot valve Damper of hydraulic pilot valve

1998-09-08

1999-11-16

Michalsky, Gerald A.

Fluid handling

Systems

With selective motion for plural valve actuator

1375961, 251 54, F15B 1302, F16K 3148

Patent

active

059839422

ABSTRACT:
A damper for a hydraulic pilot valve having a valve body in which a plurality of pressure reducing valves, a rotational shaft, an operation member attached to the rotational shaft and a handling member rotating the rotational shaft are provided. The pressure reducing valves are operated through the operation member by rotating the rotational shaft by the handling member, and the damper is disposed in the valve body and is adapted to apply an operational resistance to the operation member due to a viscous resistance of a fluid having high viscosity.

REFERENCES:
patent: 5251660 (1993-10-01), Hori et al.
patent: 5558127 (1996-09-01), Maruyama et al.
patent: 5845680 (1998-12-01), Mototani et al.

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