Pneumatic drive mechanism for positioning apparatus

Details Pneumatic drive mechanism for positioning apparatus Pneumatic drive mechanism for positioning apparatus

1987-04-08

1989-01-03

Garrett, Robert E.

Motors: expansible chamber type

With signal, indicator or inspection means

92 5R, 91361, 91454, F01B 2526, F01B 3112

Patent

active

047948418

ABSTRACT:
A pneumatic drive mechanism for use with positioning apparatus or the like, having a drive housing, a drive element such as diaphragm disk, piston or the like, movably seated therein and rigidly connected to a drive rod or similar device. The drive element is responsive to compressed air on one side thereof and to forces from at least one spring operating in opposed action to the compressed air. The spring is arranged within the drive housing. The drive mechanism also has a signal processing device such as a position controller, position encoder, limit signal generator, solenoid valve or i/p converter or similar devices. The signal processing device or devices are integrated within the drive housing in an accomodation space which is free of the spring or springs, of the drive rod and of the drive element.

REFERENCES:
patent: 3477346 (1969-11-01), Slavin et al.
patent: 3659499 (1972-05-01), Woodward

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