Permanent magnet magnetic control device having two control air

Details Permanent magnet magnetic control device having two control air Permanent magnet magnetic control device having two control air

1977-04-27

1978-10-24

Goldberg, Gerald

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

361156, 361210, H01H 4700

Patent

active

041224230

ABSTRACT:
A magnetic control device comprising one pair of permanent magnets cooperating with armatures to form first and second air gaps and, means for inverting the direction of magnetization of one magnet. In a first direction of magnetization, the flux closes through the first air gap, while, in the opposite direction, the flux is at least partially cancelled in the first air gap and passes through the second air gap, which is substantially smaller than the first air gap. Such a device is adapted to actuate a two way valve.

REFERENCES:
patent: 3514674 (1970-05-01), Toshio et al.
patent: 3798581 (1974-03-01), Anderson et al.
patent: 4015174 (1977-03-01), DE Bennetot

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