Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Vacuum or hermetically sealed type
Patent
1992-04-28
1993-08-03
Donovan, Lincoln
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Vacuum or hermetically sealed type
335207, H01H 166
Patent
active
052333221
ABSTRACT:
Apparatus for proximity magnetic switching wherein magnet assemblies are used in combination with magnetic reed switches by placement of the reed switch axis in a magnetic field null position which is shifted or unbalanced by proximation of certain magnetic materials to actuate the magnetic reed switch. In particular, such proximity magnetic switch is made weather proof and entirely sealed from its environment by molding the magnet assembly and reed switch assembly in fixed orientation within a potting compound which then exposes an actuating surface for sensing the presence of a magnetically permeable material.
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patent: 4271763 (1981-06-01), Berger
Donovan Lincoln
Hermetic Switch, Inc.
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