Conveyors: power-driven – Conveyor section – Endless conveyor
Patent
1984-08-13
1985-12-10
Valenza, Joseph E.
Conveyors: power-driven
Conveyor section
Endless conveyor
474103, 242 571, B65G 3916
Patent
active
045573727
ABSTRACT:
A belt system of the type having a transparent belt entrained about a pair of support rollers which includes an improved alignment apparatus having a plurality of opaque flags positioned along an edge of the belt and shaped to taper in a transverse dimension, an encoder for detecting movement of the belt about the rollers and generating a signal proportional in frequency to the speed of the belt, a fixed photodetector which senses the passage of a portion of the flag through a narrow window so that the time of passage is determined by the position of the belt and flag relative to the sensor, an adjusting roller actuated by a stepper motor which laterally positions the belt relative to the support rollers, and a microprocessor which determines the position of the belt from the number of pulses generated during a period of time in which the sensor detects the passage of a flag and actuates the stepper motor to position the tracking roller to shift the belt laterally in response to the number of pulses counted. In a preferred embodiment, a timer introduces a time delay between successive counting periods, the time delay varying in duration inversely with the amount of lateral deviation of the belt from its desired position.
REFERENCES:
patent: 1972075 (1934-09-01), Clark
patent: 2078669 (1937-04-01), King
patent: 2344817 (1944-03-01), Hlavaty
patent: 2356567 (1944-08-01), Cockrell
patent: 3322963 (1967-05-01), Pages
patent: 3323699 (1967-06-01), Bricker, Jr.
patent: 3323740 (1967-06-01), Blessing
patent: 3366876 (1968-01-01), Kurih et al.
patent: 3604941 (1971-09-01), Crum
patent: 3627301 (1971-12-01), Benson et al.
patent: 3701464 (1972-10-01), Crum
patent: 3721809 (1973-03-01), Strandberg, Jr. et al.
patent: 3896377 (1975-07-01), Richardson
patent: 3963902 (1976-06-01), Dowd
patent: 4049213 (1977-09-01), Hank et al.
patent: 4462676 (1984-07-01), Shimura et al.
patent: 4485982 (1984-12-01), St. John et al.
patent: 4500045 (1985-02-01), Whitaker et al.
Stone Michael
The Mead Corporation
Valenza Joseph E.
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