Rotary actuator
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United States of America Patent
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-
Nov 28, 1989
Issued Date -
N/A
app pub date -
Aug 24, 1988
filing date -
Mar 23, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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