Fluid actuator with feedback mechanism

Details Fluid actuator with feedback mechanism Fluid actuator with feedback mechanism

1982-07-29

1987-12-22

Walsh, Donald P.

Expansible chamber devices

With inspection window in expansible chamber wall portion

With lock

92140, 74105, 74526, F01B 2526

Patent

active

047140062

ABSTRACT:
A fluid actuator characterized by a feedback mechanism for indicating actuator position. The feedback mechanism is driven by the actuator screw shaft, whereby the movements of the feedback mechanism are proportional to the rate and position of the actuator movements. The feedback mechanism and actuator movements may be synchronized so that the extreme end positions of the feedback mechanism will correspond to the fully retracted and extended positions of the actuator. A stroke limiting mechanism may also be provided for preventing the actuator from overstroking the feedback mechanism in the event that they are not properly synchronized.

REFERENCES:
patent: 2527814 (1950-10-01), Hanssen
patent: 2803222 (1957-08-01), Bukoff
patent: 2819589 (1958-01-01), Geyer
patent: 2967725 (1961-01-01), Roberson
patent: 3003473 (1961-10-01), Ottoson
patent: 3403365 (1968-09-01), Richards
patent: 3507117 (1970-04-01), Lauck
patent: 3786728 (1974-01-01), Sheesley et al.
patent: 3834283 (1974-09-01), Beichel et al.
patent: 4023623 (1977-05-01), Anderson

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