Apparatus for the spark perforation of sheet materials

Details Apparatus for the spark perforation of sheet materials Apparatus for the spark perforation of sheet materials

1981-06-30

1982-10-19

Mayewsky, Volodymyr Y.

Electric heating

Heating devices

Electric arc-type devices

219121EB, 315 35, H05B 718

Patent

active

043552269

ABSTRACT:
Apparatus for spark perforation of sheet material comprising spaced apart first and second electrodes which define between them a sparking zone through which sheet material to be perforated can be moved in a predetermined direction, and in which the portion of the first electrode which is nearest to the nearest portion of the second electrode is located between an overlap position upstream of the second electrode in the direction of movement of the sheet by a distance of 1 mm and an offset position also equal to 1 mm in the direction of movement of the sheet, and means for guiding the sheet through the sparking zone along a path closer to said second electrode than said first electrode.

REFERENCES:
patent: 2763759 (1956-09-01), Mito et al.
patent: 3351740 (1967-11-01), Heuer
patent: 3424895 (1969-01-01), Olson
patent: 3538308 (1970-11-01), Schmidt
patent: 3571952 (1971-03-01), Schmidt et al.
patent: 3862396 (1975-01-01), Maclinda et al.
patent: 4278871 (1981-07-01), Schmidt-Kuleke et al.

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