Step control apparatus for a fluid motor

Details Step control apparatus for a fluid motor Step control apparatus for a fluid motor

1983-02-02

1985-05-21

Garrett, Robert E.

Motors: expansible chamber type

Constantly applied motive fluid with controlled venting

Plural separately controlled vents

91368, 91357, 91445, 91449, 13759617, F15B 909

Patent

active

045178771

ABSTRACT:
Step control apparatus for a fluid motor includes a plurality of devices each responsive to an external signal for initiating movement of the fluid motor. Also included is a mechanism for stopping movement of the fluid motor upon movement thereof a discrete step. Thus, a sequence of external signals applied to the devices effects movement of the fluid motor in a stepping mode. Optionally, an assembly may be provided for effecting movement of the fluid motor in a free-running mode.

REFERENCES:
patent: 2508399 (1950-05-01), Kendrick
patent: 3411413 (1968-11-01), MacNeill et al.
patent: 3457836 (1969-07-01), Henderson
patent: 3732027 (1973-05-01), Lupke et al.
patent: 3945299 (1976-03-01), Fritz et al.
patent: 4014248 (1977-03-01), Cyrot
patent: 4114513 (1978-09-01), Debrus
patent: 4311083 (1982-01-01), Guillon
Take a Fresh Look at Motion Control, published by Motion Products Division, MTS Systems Corporation, Minneapolis, MN.

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