초록

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.

대표청구항 ▼

[ What is claimed is:] [1.]1. A ferrite core assembly with a gap comprising two ferrite core halves with their end surfaces abutting each other with a gap therebetween, the end surface of at least one ferrite core half having an envelope extending along a concavely curved plane, and said gap being 1

[ What is claimed is:] [1.]1. A ferrite core assembly with a gap comprising two ferrite core halves with their end surfaces abutting each other with a gap therebetween, the end surface of at least one ferrite core half having an envelope extending along a concavely curved plane, and said gap being 1 .mu.m or more at a widest point.