Magnetic damping system having low induction magnet

Details Magnetic damping system having low induction magnet Magnetic damping system having low induction magnet

1979-02-16

1980-12-09

Tokar, Michael J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With permanent magnet

324137, G01R 116

Patent

active

042387299

ABSTRACT:
A magnetic damping system for induction devices having electroconductive disk armatures includes a low induction, high coercive force magnet that is vertically elongated and has a horizontal direction of magnetization parallel to the disk. Flux concentrating pole pieces adjoin the magnet pole faces for vertically directing two closely spaced braking magnetic fields from a pair of pole tips and into the disk. A temperature compensating arrangement covers the sides of the permanent magnet between the edges of the pole pieces to efficiently compensate for higher reversible temperature coefficients of magnet remanence.

REFERENCES:
patent: 817305 (1906-04-01), Duncan
patent: 1687686 (1928-10-01), Paschen
patent: 1705682 (1929-03-01), Reime
patent: 2309414 (1943-01-01), Nobbs
patent: 3076934 (1963-02-01), Witte et al.
patent: 3309152 (1967-03-01), Ramsey, Jr. et al.
patent: 3688192 (1972-08-01), Ramsey, Jr.
patent: 4030031 (1977-06-01), Stucker
patent: 4182984 (1980-01-01), MacFadden et al.

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