Cycle timer circuit for electrical discharge machining

Details Cycle timer circuit for electrical discharge machining Cycle timer circuit for electrical discharge machining

1982-09-20

1984-10-02

Envall, Jr., Roy N.

Electric heating

Metal heating

Cutting or disintegrating

219 69G, B23P 108, B23P 112

Patent

active

044750250

ABSTRACT:
A cycle timer circuit for electrical discharge machining. Operation of the electrode is controlled by a pair of solid state timers working in timed relationship, one with the other, to provide an up time duration of greater magnitude than the down time duration.

REFERENCES:
patent: 3370147 (1968-02-01), Matulaitis
patent: 3381107 (1968-04-01), Poerschke
patent: 3435177 (1969-03-01), Shaffer
patent: 3492593 (1970-01-01), Ullmann et al.
patent: 3539755 (1970-11-01), Inoue
patent: 3649802 (1972-03-01), Sennowitz
patent: 3755645 (1973-08-01), Kauffman
patent: 3767886 (1973-10-01), Sennowitz
patent: 3789182 (1974-01-01), Verner
patent: 3825714 (1974-07-01), Marendaz
patent: 4185184 (1980-01-01), Pfau
patent: 4263494 (1981-04-01), Martin
patent: 4319114 (1982-03-01), Bell, Jr. et al.

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