Electric heating – Metal heating – By arc
Patent
1994-03-21
1996-04-02
Evans, Geoffrey S.
Electric heating
Metal heating
By arc
21912168, 21912184, B23K 2600
Patent
active
055043011
ABSTRACT:
A laser engraving apparatus (10) and method for engraving a workpiece (15) which includes a mask (11) having at least one image opening (14) extending therethrough. A suction housing (21) is operably coupled to a source of partial vacuum (19) and includes a mouth portion (22) positioned proximate the mask (11) to hold the workpiece (15) and the mask (11) in abutting contact, A laser cutting assembly (24) generates a laser beam (26) which is directed onto the exposed surface (16) under the mask (11) causing engraving thereof. Vaporization or engraving by-products are drawn away from the vaporization surface (16) through the partial vacuum used to hold the mask (11) and workpiece (15) together, The partial vacuum also may be used to cool the mask (11).
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Evans Geoffrey S.
Laser Cut Images International, Inc.
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