Electricity: magnetically operated switches – magnets – and electr – Permanent magnet-actuated switches
Patent
1979-07-24
1981-09-29
Harris, George
Electricity: magnetically operated switches, magnets, and electr
Permanent magnet-actuated switches
335 51, 335206, H01H 900
Patent
active
042926157
ABSTRACT:
A switching element having a container made of insulating material, terminals extending from the inside to outside of the container, a mixture filled and hermetically sealed in the container, the mixture being composed of conductive powder or particles which may be magnetic and of a non-conductive liquid such as contact oil. The conductive powder is primarily suspended in the liquid, and magnetic forces are applied to and removed from the above-mentioned powder or particles by magnets or the like provided outside of the container to perform switching operations.
REFERENCES:
patent: 2951135 (1960-08-01), Ovshinsky
patent: 2971071 (1961-02-01), Ovshinsky
patent: 2972029 (1961-02-01), Ovshinsky
patent: 3381248 (1968-04-01), Furth
patent: 3764540 (1973-10-01), Khalafalla et al.
patent: 3917538 (1975-11-01), Rosensweig
Field Lawrence I.
Harris George
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