Electric heating – Metal heating – By arc
Patent
1975-12-12
1985-03-26
Shaw, Clifford C.
Electric heating
Metal heating
By arc
219121LM, 219121LW, 219384, 242 754, B23K 2700
Patent
active
045075352
ABSTRACT:
A process for perforating material comprising the steps of advancing material along a path of travel, passing the advancing material over a movable laser mask having an aperture such that the material drives the mask in unison with the movement of the material, and directing at least one laser beam through the corresponding aperture so as to vaporize the material juxtaposed the mask aperture to correspondingly form an opening in the material. The apparatus contemplated for perforating the material as it is advanced along a path of movement comprises first means for advancing the material along the path of movement, second means having at least one aperture and being operatively associated with the first means for enabling the perforation of the material as it is advanced along the path, and for being driven by and in unison with the advancing material, and third means operatively associated with the second means for vaporizing material juxtaposed said aperture.
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Bennett William T.
Parks Bennie L.
American Brands, Inc.
Shaw Clifford C.
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