Method of severing an annular core of ferromagnetic material int

Details Method of severing an annular core of ferromagnetic material int Method of severing an annular core of ferromagnetic material int

1987-07-06

1990-06-12

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Electron or ion beam deflecting type

21912167, H01F 700

Patent

active

049336568

ABSTRACT:
A method of longitudinally severing a longitudinally symmetrical annular core of ferromagnetic material into two parts. By means of a laser, two lines of recesses are inscribed in the surface of the annular core substantially in the longitudinal direction. The recesses are shaped so that the resulting weakening of the annular core along the lines of recesses causes it to spontaneously fracture into two parts along such lines.

REFERENCES:
patent: 4356376 (1982-10-01), Komanduri et al.
patent: 4590652 (1986-05-01), Harwood
patent: 4818840 (1989-04-01), Booth et al.

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