Gap-providing ferrite core half and method for producing same

Details Gap-providing ferrite core half and method for producing same Gap-providing ferrite core half and method for producing same

1996-10-29

1998-10-06

Eley, Timothy V.

Abrading

Abrading process

29605, 296021, 29606, B24B 100

Patent

active

058168940

ABSTRACT:
The gap-providing ferrite core half is produced by grinding an abutting surface of a ferrite core half by a rotating grinder with a rotation shaft inclined by 0.1.degree.-45.degree. relative to a line vertical to a surface of the ferrite core half to be ground in a plane parallel to a core width direction, so that the resultant gap-providing recess is constituted by a concave elliptical plane expressed by the following formula: ##EQU1## wherein A is a width of the ferrite core half, R is an effective radius of the grinder, .theta. is an inclination angle of the rotation shaft of the grinder relative to a line vertical to a surface of the ferrite core half to be ground, and G is a gap depth.

REFERENCES:
patent: 2401175 (1946-05-01), Morrill
patent: 3518595 (1970-06-01), Dawson et al.
patent: 4837923 (1989-06-01), Brar et al.
patent: 4998174 (1991-03-01), Wada et al.
patent: 5007158 (1991-04-01), Ino et al.
patent: 5033184 (1991-07-01), Tandi
patent: 5099376 (1992-03-01), Ino et al.
patent: 5195004 (1993-03-01), Okuda et al.

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