The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 25, 1977
Filed:
Jan. 14, 1975
Applicant:
Inventor:
Kiyoshi Inoue, Tokyo, JA;
Assignee:
Inoue-Japan Research Inc., Yokohama, JA;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B23P / ;
U.S. Cl.
CPC ...
219 / ; 219 / ; 219 / ; 23515111 ;
Abstract
An EDM apparatus in which the control system is fully adaptive by having a reference counter which is stepped up or down depending upon the occurrence of undesirable discharge conditions. The control system thus includes a counter receiving signals representing a desirable gap condition over a relatively short time period and signals representing the non-development of the undesirable condition over a relatively long time period as established by appropriate timer means. A parameter of the gap is controlled in response to a comparison of the gap condition over a sequence of pulses with a desirable state as represented by the count registered in the counter.