Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1985-07-17
1987-04-14
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
250561, G01N 2186, G01V 904
Patent
active
046581448
ABSTRACT:
Apparatus to align a plurality of objects while being concomitantly transported via a drive mechanism. Included is a detectional device at fixed locations in the path of transport to determine the relative actual positions of the objects and comparing the determined positions with a relative position to be maintained. On the basis of the comparison, the positional detection means emits a correction signal for operating a repositioning mechanism which imposes a restraining force on the leading of the objects that restrains the object in opposition to the transport force imposed thereon by the drive mechanism. For generating the emitted correction signal there is included circuit means including an encoder for generating pulses and means to determine the quantity of pulses corresponding to the variance between the compared portions of the objects. This enables high resolution monitoring to be effected whereby the restraining force imposed against the object can either be proportional to the magnitude of the correction signal or can be a fixed force applied by the repositioning mechanism for a proportioned time interval.
REFERENCES:
patent: 2078669 (1937-04-01), King
patent: 2106611 (1938-01-01), La Pierre
patent: 2106612 (1938-01-01), La Pierre et al.
patent: 2117878 (1938-05-01), Friedemann
patent: 2674151 (1954-04-01), Garrett et al.
patent: 2962596 (1960-11-01), Leimer et al.
patent: 3323700 (1967-06-01), Epstein et al.
patent: 3368726 (1968-02-01), Funk et al.
patent: 3495089 (1970-02-01), Brown
patent: 3559568 (1971-02-01), Stanley
patent: 3867889 (1975-02-01), Conner, Jr.
patent: 4157477 (1979-06-01), Kall et al.
patent: 4184080 (1980-01-01), Massey
patent: 4303189 (1981-12-01), Wiley et al.
Allen S.
Levi Strauss & Co.
Nelms David C.
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