Bistable magnet

Details Bistable magnet Bistable magnet

1989-07-31

1990-03-20

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

H01F 708

Patent

active

049104870

ABSTRACT:
Bistable magnet, in particular for the actuation of valves and the like, with a movable piston that has a pole face and that is held by a permanent magnet in one of its two stable positions, wherein this piston has a stop face that is provided with a damping plate and that with an opposing face that is built stationary into the housing defines an end position of the piston. To avoid switching noises without decreasing the holding forces it is provided that, in addition to the stop face on the piston, a pole face is provided that interacts with a stationary pole face and that a device that guides the magnetic flux and bridges the air gap between these pole faces is provided between these pole faces.

REFERENCES:
patent: 1817592 (1931-08-01), Sokoloff
patent: 3713059 (1973-01-01), Taoa
patent: 3961298 (1976-06-01), Jaffe et al.

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