Electric heating – Metal heating – By arc
Reexamination Certificate
2007-10-16
2007-10-16
Heinrich, Samuel M. (Department: 1725)
Electric heating
Metal heating
By arc
C219S121720, C219S121820, C156S272800
Reexamination Certificate
active
10667926
ABSTRACT:
A method for joining workpieces by welding with laser light, in which a plurality of workpieces are arranged between a lower pressure plate and a translucent upper pressure plate on a multiplicity of supporting segments movable in a vertical direction, whereby the workpieces are subsequently exposed through the upper pressure plate to a laser beam. The workpieces on the supporting are pressed together and towards the upper plate with a prescribed contact pressure, the spacing of the supporting segments from the upper pressure plate being set variably and independently from each other. A device for joining workpieces by welding with laser light, comprises at least one upper pressure plate of transparent material and a lower pressure plate with multiplicity supporting segments for the workpieces. The supporting segments are arranged side by side on the lower plate and are movable in a vertical direction by compressed air and can be set independently from each other.
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Beringer et al., “Workpiece Clamp for laser machining—has laser transparent clamp plate with grooves for gas flow between input and outlet in base”, Jul. 20, 1988, Derwent-acc-No. 1988-324055, Abstracted Pub No. DD258386A.
Chizhik et al., “Thermoplastic-material laser welding . . . transparent pressure plates which allow laser welding beam to pass through”, Apr. 30, 1994, Derwent-acc-No. 1995-029080, Abstracted Pub No. RU2011530C.
Chen Jie-Wei
Niederberger Adolf
Bachman & LaPointe P.C.
Heinrich Samuel M.
Leister Process Technologies
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