Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1996-06-20
1998-04-21
Allen, Stephone B.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
228 41, 228246, 2505594, H01J 4014, B23K 100
Patent
active
057420483
ABSTRACT:
A sucking failure detecting device built into an apparatus which transfers an object by sucking the object onto a sucking hole of a sucking head of the apparatus, the detecting device comprises: a light-emitting device emitting light and disposed on a movement path of the sucking head; and a light-receiving device disposed inside the sucking head which is made of light-shielding material, the light-receiving device receiving the light emitted by the light-emitting device and passing through the sucking hole.
REFERENCES:
patent: 5601229 (1997-02-01), Nakazato et al.
patent: 5615823 (1997-04-01), Noda et al.
Kinoshita Satoshi
Kobayashi Shigeharu
Shimada Koji
Allen Stephone B.
Shibuya Kogyo Co. Ltd.
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