Valve for a hydraulic elevator

Details Valve for a hydraulic elevator Valve for a hydraulic elevator

1995-02-28

1997-06-10

Michalsky, Gerald A.

Fluid handling

Processes

91448, 187275, 251 3002, 251 60, 25112912, F16K 3102

Patent

active

056366523

ABSTRACT:
A transition valve for a hydraulic elevator includes a block, a spool, an actuator, and an end cap. The actuator may be either a solenoid type actuator or an electric motor type actuator. The end cap includes an opening permitting engagement between the actuator and the spool. In a particular embodiment, the actuator is an electric motor engaged with the spool via a crank and arm. This arrangement translates the rotational motion of the motor into linear motion of the spool with a sine curve profile.

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