Switch for high magnetic field

Details Switch for high magnetic field Switch for high magnetic field

1988-11-16

1990-09-04

Pellinen, A. D.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

335131, 335185, 361142, H01H 900

Patent

active

049549243

ABSTRACT:
A switch is mounted in a housing of a high-intensity static magnetic field generator and the housing includes a rotation shaft supported on the housing, a coil mounted relative to rotation shaft, an arm energized by the coil, arm energized by that arm, a rod energized by the arm, a latching/snapping element energized by the rod, a rod moved by the element and a movable electrode plate energized by the rod and movable into and out of engagement with a fixed electrode plate and holding their engaged and disengaged states. Almost every member of the switch is made of non-magnetic material, such as plastics and copper. Upon driving the coil under a mutual electromagnetic atmosphere resulting from electric current in the coil and high magnetic field Bo of the high-intensity static magnetic field generator, the element can open and close an associated electric circuit, while performing a latching/snapping operation, which is included in the high-intensity static magnetic field generator connected to the fixed electrode plate. It is also possible to hold the opened and closed states.

REFERENCES:
patent: 3319199 (1967-05-01), Bauer
patent: 4631507 (1986-12-01), Guery et al.
patent: 4658226 (1987-04-01), Maenishi et al.
patent: 4725801 (1988-02-01), Snyder
patent: 4752755 (1988-06-01), Nakano et al.
J. F. Shen, et al., R.F. Coil Design for NMR Imaging, "Society of Magnetic Resonance in Medicine", 4th Annual Meeting, Aug. 1985, pp. 1117-1118.

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