Electric heating – Metal heating – By arc
Patent
1982-02-19
1983-09-13
Albritton, C. L.
Electric heating
Metal heating
By arc
219121LR, 219121LT, 219121LV, B23K 2700
Patent
active
044044542
ABSTRACT:
Apparatus for generating pulsed light beams from a focused continuous laser beam includes reflector discs which are rotated about a common rotational axis. The discs include peripheral reflective facets which confront the laser beam in the course of rotation and also have light transmissive portions between adjacent facets. The facets and transmissive portions of successive discs are selectively misaligned such that pulsed beams issue successively from different discs. A system employing the apparatus for perforation of a web also includes a common lens per disc pair and a prism for deviating light issuing from one disc of the disc pair.
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Barber Richard B.
Taylor George W. B.
Albritton C. L.
Philip Morris Incorporated
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