Mercury switch

Details Mercury switch Mercury switch

1980-12-08

1983-01-11

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Utilizing conductive liquid

335 58, 29622, H01H 2904

Patent

active

043684424

ABSTRACT:
A mercury switch in which a magnetic armature and a magnetic pole having a fixed contact are inserted in a glass tube, mercury is introduced into the glass tube to wet the contact point, and both ends of the glass tube are sealed. A recessed portion is formed in a portion of the magnetic pole and the fixed contact is adhered into the recessed portion. A film of a metal oxide which will be only slightly wetted with mercury is formed on the surface of the magnetic pole except on the surface of the fixed contact.

REFERENCES:
patent: 3331037 (1967-07-01), Hempel
patent: 4066859 (1978-01-01), Steinmetz
patent: 4164720 (1979-08-01), Bollen

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