1976-08-30
1978-02-14
Evans, F. L.
G05D 2500
Patent
active
040735761
ABSTRACT:
A chopper blade has parallel edges and is rotatably mounted on two eccentric discs. As one disc is driven, the blade moves across an optical beam in parallel fashion. Elliptical drive gears can be used to achieve linear speed.
Evans F. L.
North American Philips Corporation
Steckler Henry I.
Trifari Frank R.
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