Semi-rotating single acting pneumatic actuator

Details Semi-rotating single acting pneumatic actuator Semi-rotating single acting pneumatic actuator

1985-06-12

1987-03-24

Focarino, Margaret A.

Expansible chamber devices

Displacement control of plural cylinders arranged in...

Adjustable abutment positioned within working chamber

92130D, 92133, 92136, 92138, F15B 1524

Patent

active

046516263

ABSTRACT:
The actuator has a plurality of springs in a circular array, for effecting return movement of two pistons slidable in a bore in the actuator body and each having a rack portion meshing with a pinion on an output shaft extending perpendicularly of the axis of the bore, the springs being each arranged in individual seatings defined by blind holes in the pistons and a circular array of through holes in apertured disc members, and being maintained in position by means of a respective flanged apertured spring guide carrying an end cap adjustably held on to the spring guide by a hollow screw with an internal threaded through hole therein a threaded rod is engaged effective to act as a piston stroke limit member.

REFERENCES:
patent: 2272091 (1942-02-01), Loewe
patent: 3175473 (1965-03-01), Boteler et al.
patent: 3618473 (1971-11-01), Miller
patent: 4354424 (1982-10-01), Nordlund
patent: 4392631 (1983-07-01), Dewald

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