Electric heating – Metal heating – Cutting or disintegrating
Patent
1983-03-08
1986-08-26
Albritton, Clarence L.
Electric heating
Metal heating
Cutting or disintegrating
30388, 30500, 2041297, 204212, 219 69R, 219 70, B23K 3702, B23D 4516
Patent
active
046084770
ABSTRACT:
A portable, hand held electric arc saw has a small frame for supporting an electrically conducting rotary blade which serves as an electrode for generating an electric arc to erode a workpiece. Electric current is supplied to the blade by biased brushes and a slip ring which are mounted in the frame. A pair of freely movable endless belts in the form of crawler treads stretched between two pulleys are used to facilitate movement of the electric arc saw. The pulleys are formed of dielectric material to electrically insulate the crawler treads from the frame.
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Albritton Clarence L.
Evans Geoffrey S.
Hightower Judson R.
Nypaver Edward W.
Southworth III Robert
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