Conveyors: power-driven – With means to facilitate working – treating – or inspecting... – Means engaging conveyor or load on a conveyor to align load...
Patent
1989-03-02
1990-08-14
Spar, Robert J.
Conveyors: power-driven
With means to facilitate working, treating, or inspecting...
Means engaging conveyor or load on a conveyor to align load...
B65G 4700
Patent
active
049479806
ABSTRACT:
In a facility for conveying PWBs in a path of travel, two stop/clamp devices are magnetically clamped along the path to be spaced in its length and to be within the path width occupied by the traveling board. Each of the devices has stop and clamp elements shiftable as a unit between out positions at which they are disposed in the path and in positions at which they and the rest of their device do not interfere with the travel in the path of the boards. When in the out position, the leading device is adapted to stop the travel of such a board, and both devices are then selectively operable to grip and then release the stopped board. Sensors on the leading device are used to detect the presence of a board near to and at such device. A computer is responsive to such sensors and is used to produce a desired sequence of operations of such two devices and of other units.
REFERENCES:
patent: 2851145 (1958-09-01), Gagnon
patent: 3690433 (1972-09-01), Buklini
patent: 4253559 (1981-03-01), Myers et al.
patent: 4539479 (1985-09-01), Sheets et al.
patent: 4562919 (1986-01-01), Cattani
patent: 4611704 (1986-09-01), Burgess, Jr.
patent: 4674620 (1987-06-01), Inoue
patent: 4706796 (1987-11-01), Chambers
patent: 4736830 (1988-04-01), Hofmann
American Telephone and Telegraph Company
Bidwell James R.
Kip, Jr. Ruloff F.
Levy Robert B.
Spar Robert J.
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