Electric heating – Metal heating – Cutting or disintegrating
Patent
1993-06-08
1995-04-11
Evans, Goeffrey S.
Electric heating
Metal heating
Cutting or disintegrating
B23H 100, B23H 912
Patent
active
054060435
ABSTRACT:
A method for forming a master die from a conductive material using electrical discharge machining. The conductive material is created to have a plurality of dimples that are non-circular in a direction perpendicular to the spherical surface of a conductive material and/or in a vertical cross section. The plurality of dimples being formed by electric discharge machining using an electrode that is moved in a direction perpendicular to the surface of the material.
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patent: 5005838 (1991-04-01), Oka
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Patent Abstracts of Japan, vol. 16, No. 149 (M-1234) (5192) 12 Apr. 1992 & JP-A-40 08 414.
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Evans Goeffrey S.
Sumitomo Rubber Industries Ltd.
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