Registers – Package operated – Package operated switch
Patent
1989-03-28
1990-12-25
Fuller, Benjamin R.
Registers
Package operated
Package operated switch
235 98B, 116204, 116303, 1985021, 200 6142, 226100, 377 8, G06M 706
Patent
active
049796704
ABSTRACT:
A sensor for sensing and counting objects on a moving conveyor. Objects are moved on the conveyor past a sensor having first and second legs pivotally mounted about a fixed axis above the conveyor. The second leg is offset from the first leg in the direction of conveyor movement. As an object encounters the first leg, it causes the first leg to rotate toward the second leg. A proximity detector includes a target mounted on the first leg and a sensing element mounted on the second leg. The proximity detector detects movement of the first leg relative to the second leg and generates a pulse, thereby counting the object, when the first leg assumes a predetermined position relative to the second leg.
REFERENCES:
patent: 3577955 (1971-05-01), Palmer
patent: 3702925 (1972-11-01), Anderson et al.
patent: 4148393 (1979-04-01), Wiseman
patent: 4562339 (1985-12-01), Sjogren et al.
patent: 4713831 (1987-12-01), Morisod
Fuller Benjamin R.
Quad/Tech Inc.
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