Rotary actuator

Details Rotary actuator Rotary actuator

1988-08-24

1989-11-28

Garrett, Robert E.

Expansible chamber devices

With inspection window in expansible chamber wall portion

With lock

92138, 92161, 92163, 403 37, 403337, F01B 3112, F01B 904

Patent

active

048829773

ABSTRACT:
A rotary actuator for converting a linear reciprocatory movement of a piston into a rotary reciprocatory movement of an output shaft through a connecting member. The rotary actuator includes a cylinder case formed with a pedestal in a position in which the output shaft extends vertically out of the cylinder case. The pedestal is formed with a substantially square elevated portion, and a depressed portion defined by the elevated portion. A plurality of projections spaced apart from each other by a predetermined angle are formed integrally with the pedestal in the depressed portion to constitute dividing lines of a scale for indicating the angle of rotation of the output shaft by means of a pointer.

REFERENCES:
patent: 2321267 (1943-06-01), Van Der Werff
patent: 2853226 (1958-09-01), Maniscallo
patent: 2876747 (1959-03-01), Dermond
patent: 2963260 (1960-12-01), Siravo
patent: 3376895 (1968-04-01), Pray
patent: 3452961 (1969-07-01), Forsman
patent: 4170169 (1979-10-01), Shafer
patent: 4260128 (1981-04-01), Tito

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