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US 5,142,314 AGranted
Stopping position control device
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorKimiaki Ogawa
Life of this patent
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Abstract
A stopping control device includes a stripe pattern formed on an object to be moved and a non-contact type sensor for sensing a boundary between the stripes of the pattern. The stopping mechanism stops the object after a predetermined time has passed after a boundary was sensed so that the sensor beam is positioned at an approximate center of a stripe. The sensor may be a photo reflector sensing a reflectance of each part of the stripes, to sense a boundary therebetween.
Claims9
A device for controlling a stopping position of a moving object, said device comprising:
- a pattern provided in a line along which said moving object is moved, said pattern having characteristics which change in a regular maner along said line, said characteristics being stripes,
- means for discriminating a change in said characteristics of said pattern, and means for issuing a command for stopping said object after a predetermined time has passed after said discrimination means has sensed a change of said characteristics, whereby said object is stopped at a position corresponding approximately to the center of one of said stripes.
Dependencies are inferred from the claim text.