Prefilter for EDM machine

Details Prefilter for EDM machine Prefilter for EDM machine

1990-01-16

1993-01-05

Nozick, Bernard

Electric heating

Metal heating

Cutting or disintegrating

210122, 210400, B23H 110

Patent

active

051773350

ABSTRACT:
A prefilter for an EDM machine includes a tank for holding flush water with guide rollers and channels used to thread a continuous sheet of filter paper along the bottom thereof such that the flush water is prefiltered by the continuous sheet filter paper. A float switch detects the level of flush water in the tank so that as the filter paper becomes clogged, it actuates a take-up motor for advancing the filter paper through the tank to remove clogged filter paper therefrom and replace it with fresh filter paper. The prefilter may be used as a kit for retrofit to existing EDM machines or provided as part of an original equipment design.

REFERENCES:
patent: 794631 (1905-07-01), Milne
patent: 2664203 (1953-12-01), Crane et al.
patent: 2665812 (1954-01-01), Crane
patent: 2765394 (1956-10-01), Griffith
patent: 4754115 (1988-06-01), Rhoades

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