Sintered plunger and production method therefor

Details Sintered plunger and production method therefor Sintered plunger and production method therefor

2004-09-15

2009-06-02

Barrera, Ramon M (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

C419S008000

Reexamination Certificate

active

07541906

ABSTRACT:
A sintered plunger is used for electromagnetic actuators. The sintered member includes: an outer member composed of a soft magnetic material and having an inner hole formed therein, and a shaft having an end portion which is fitted into the outer member. The shaft is composed of a ferromagnetic steel, the outer member peripheral is composed of a sintered member, and the shaft and the outer member are integrally bonded by sintering. As a result, the overall sintered plunger can have good magnetic properties, a good magnetic attraction, a good wear resistance, and a good fatigue strength. Electromagnetic actuators having high responsiveness required in recent years can be produced.

REFERENCES:
patent: 4503009 (1985-03-01), Asaka
patent: 6120727 (2000-09-01), Asaka et al.
patent: 0 922 520 (1999-06-01), None
patent: A 2000-087114 (2000-03-01), None
patent: A 2000-087117 (2000-03-01), None

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