Magnetic base

Details Magnetic base Magnetic base

1979-08-09

1981-02-17

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

335285, 335295, H01F 702

Patent

active

042517915

ABSTRACT:
A magnetic base adapted to be secured to a magnetic substance attractively, wherein a permanent magnet 20 having a small reversible permeability .mu. is employed as a rotary magnet housed in a magnetic block 18 and rotated for switching magnetic active surfaces 24 of the block from an unexcited state to an excited state, thereby effecting a light and smooth rotation.

REFERENCES:
patent: 3184654 (1965-05-01), Bey
patent: 3452310 (1969-06-01), Israelson
patent: 3677947 (1972-07-01), Ray et al.
patent: 4055824 (1977-10-01), Baermann

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