Method of electric discharge machining a cathode for an...

Details Method of electric discharge machining a cathode for an... Method of electric discharge machining a cathode for an...

2007-03-07

2009-10-06

Evans, Geoffrey S (Department: 3742)

Electric heating

Metal heating

Cutting or disintegrating

C219S069150

Reexamination Certificate

active

07598471

ABSTRACT:
A method of machining a cathode used in an electron gun. The method includes steps of placing an object to be machined, which is a material of the cathode, and a machining electrode in an electrically insulating oil; applying a discharge current to the machining electrode; and machining the object to be machined to have a shape corresponding to the shape of the machining electrode by means of electric discharge machining of the machining electrode. The machining electrode includes a disk, recesses formed on a front surface of the disk, a protrusion provided on a back surface of the disk, and a hole for mounting a lead wire for applying discharge current to the machining electrode. Bumps corresponding to the shape of the recesses of the machining electrode are formed on the object to be machined by means of the electric discharge machining.

REFERENCES:
patent: 3407475 (1968-10-01), Koppius
patent: 4031425 (1977-06-01), Ziegler et al.
patent: 4798957 (1989-01-01), Tolner
patent: 4878866 (1989-11-01), Mori et al.
patent: 4900982 (1990-02-01), Kolpin
patent: 5502306 (1996-03-01), Meisburger et al.
patent: 5557105 (1996-09-01), Honjo et al.
patent: 5864142 (1999-01-01), Muraki et al.
patent: 5892224 (1999-04-01), Nakasuji
patent: 6038018 (2000-03-01), Yamazaki et al.
patent: 6232040 (2001-05-01), Katsap et al.
patent: 6259094 (2001-07-01), Nagai et al.
patent: 6400090 (2002-06-01), Katsap et al.
patent: 6465783 (2002-10-01), Nakasuji
patent: 6476390 (2002-11-01), Murakoshi et al.
patent: 6518582 (2003-02-01), Kohama
patent: 6586736 (2003-07-01), McCord
patent: 6765217 (2004-07-01), Nishimura et al.
patent: 2003/0173337 (2003-09-01), Ito
patent: 2535467 (1977-02-01), None
patent: 0 518 633 (1992-12-01), None
patent: 0 957 583 (1999-11-01), None
patent: 1 055 745 (2000-11-01), None
patent: 22003071 (1979-03-01), None
patent: 4-33810 (1992-02-01), None
patent: 4-164520 (1992-06-01), None
patent: 5-82607 (1993-04-01), None
patent: 5-258703 (1993-10-01), None
patent: 6-12990 (1994-01-01), None
patent: 7-150274 (1995-06-01), None
patent: 9-219427 (1997-08-01), None
patent: 10-313027 (1998-11-01), None
patent: 11-132975 (1999-05-01), None
patent: 111-48905 (1999-06-01), None
patent: 2002-141010 (2002-05-01), None
patent: 2002-141011 (2002-05-01), None
patent: 2002-150985 (2002-05-01), None
patent: WO-97/44807 (1997-11-01), None

Affiliated with

Also associated with

Rating

Method of electric discharge machining a cathode for an... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of electric discharge machining a cathode for an..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of electric discharge machining a cathode for an... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4085887