Control apparatus for an intermittently rotated wheel
AssigneeSeikosha Co., Ltd.
InventorShoichiro Kumazawa
Life of this patent
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Abstract
A control device for controlling the rotation of an intermittently driven wheel comprises a lock wheel affixed to the driven wheel for rotation therewith and having a smooth, non-toothed peripheral surface. A lock lever is turnably mounted adjacent the lock wheel and has a lever arm in continuous frictional contact with the lock wheel peripheral surface. A lever spring biases the lock lever so that the lever arm applies a predetermined frictional bias force to the lock wheel peripheral surface to prevent reverse rotation of the driven wheel. The lever arm is configured so as to increase the magnitude of the bias force applied to the lock wheel whenever the driven and lock wheels tend to rotate in the reverse direction.
Claims4
A control device for controlling the rotation of an intermittently driven wheel comprising:
- a driven wheel mounted to be rotationally driven in a forward direction in a stepwise intermittent manner;
- a lock wheel connected to said driven wheel to be driven thereby and having a smooth non-toothed peripheral surface;
- a turnably mounted lock lever having a lever arm extending toward said lock wheel and terminating in an arm end portion in frictional contact with said lock wheel peripheral surface;
- and means including a lever spring for applying an adjustable biasing force to said lock lever tending to turn it so as to urge said arm end portion into frictional contact with said lock wheel peripheral surface with an adjustably settable frictional bias force to thereby prevent said lock wheel and driven wheel from undergoing rotation in the reverse direction.
Dependencies are inferred from the claim text.