Pneumatically operated actuator and method of making the same

Details Pneumatically operated actuator and method of making the same Pneumatically operated actuator and method of making the same

1979-06-28

1980-12-09

Maslousky, Paul E.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Bias-type input and feedback signal means

92130D, 92 99, 403242, F15B 1316, F01B 1900, F16J 302

Patent

active

042377714

ABSTRACT:
A method of making a pneumatically operated actuator having a pneumatically operated movable wall interconnected by a feedback tension spring to a pilot valve positioner that is adapted to pneumatically operate the movable wall of the actuator in relation to a pneumatic signal directed to the positioner, the method including the steps of loosely projecting one end of the spring through an opening in the wall after the other end of the spring has been interconnected to the pilot valve positioner and pulling on the one end of the spring while directing a predetermined pneumatic signal to the positioner so that the wall will assume a position thereof relative to the one end of the spring and the actuator that corresponds to the predetermined pneumatic signal whereby the one end of the spring can be secured to the wall while the wall is in that position thereof and the spring is in the pulled condition thereof that caused the wall to move to such position.

REFERENCES:
patent: 2557627 (1951-06-01), Baril
patent: 2966891 (1961-01-01), Williams
patent: 3172336 (1965-03-01), Warstler
patent: 3490341 (1970-01-01), Sessody

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