Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Vacuum or hermetically sealed type
Patent
1975-05-27
1977-05-31
Harris, George
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Vacuum or hermetically sealed type
335187, 335207, H01H 166
Patent
active
040272788
ABSTRACT:
A sealed switch includes C-shaped control and follower magnets disposed along an axis with poles thereof in facing relationship, a set of electrical switch contacts coupled to be selectively opened or closed in dependence upon the position of the follower magnet, and a housing enclosing the set of electrical contacts and the follower magnet, the housing having a nonmagnetic wall extending between the facing poles of the control and follower magnets to provide hermetic isolation of the contacts. In accordance with particularly selected configurations, the control magnet may be mounted for alternatively pushbutton type axial motion or rotational motion within different selected limits and the follower magnet may be mounted for either axial or rotational motion within predetermined limits or both. The magnets may be resiliently biased toward predetermined position limits in some configurations. Regardless of the selected configuration, the contacts remain completely enclosed by the housing to be selectively opened or closed by the follower magnet in response to the positioning of the control magnet.
REFERENCES:
patent: 2498683 (1950-02-01), Hubbell
patent: 3025372 (1962-03-01), Benson
patent: 3052778 (1962-09-01), Kathe
patent: 3325756 (1967-06-01), Maxwell
patent: 3601727 (1971-08-01), Hults
Giannini Custom Switches, brochure & sample switches distributed prior to June 27, 1974.
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