Control system for mechanically adjustable speed motor drives

Details Control system for mechanically adjustable speed motor drives Control system for mechanically adjustable speed motor drives

1988-12-20

1990-12-11

Price, Carl D.

Motors: expansible chamber type

Application of motive fluid at different pressures to...

Double acting motor reversed by pressure variation of motive...

91416, 91417R, F01B 100

Patent

active

049761862

ABSTRACT:
A control system for mechanically adjustable motor drives which have a shiftable speed control for controlling the speed of the drive. The system includes a double acting pneumatic cylinder which is remotely controlled to shift the speed control by varying the air pressure in the double acting cylinder, to increase or to decrease the speed of the motor drive. The air pressure can be varied manually or by automatic control means.

REFERENCES:
patent: 862867 (1907-08-01), Eggleston
patent: 3048151 (1962-08-01), Kudlaty
patent: 3472125 (1969-10-01), Noble
patent: 3683748 (1972-08-01), Mahl et al.
patent: 3957395 (1976-05-01), Ensign
patent: 4046060 (1977-09-01), Becker et al.
patent: 4161135 (1979-07-01), Garlinghouse
patent: 4253692 (1981-03-01), Garlinghouse
patent: 4817661 (1989-04-01), Howeth
IBM Technical Bulletin, vol. 19, No. 9, Feb. 1977.

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