Intermittent rotation drive apparatus utilizing air pressure
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United States of America Patent
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-
Jun 4, 1991
Grant Date -
N/A
app pub date -
Apr 25, 1989
filing date -
Oct 27, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is an apparatus wherein the reciprocation of a piston which is achieved utilizing air pressure causes movement of a pawl portion provided on the piston, and this movement in turn causes intermittent rotation of a spindle. In particular, according to the present invention, a pair of pawl members are used, and a selector lever is provided to permit only one of the pawl members to cause the rotation of the spindle. When the pawl member to be actuated is thus selected through the action of the selector lever, selection can be made as to the direction of rotation of the spindle.
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