Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Contact-actuating means
Patent
1980-11-13
1982-07-06
Broome, Harold
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Contact-actuating means
335164, 335165, H01H 4500
Patent
active
043385834
ABSTRACT:
A switch for controlling an electric circuit has a sealed housing and a slidable actuator mounted therein for external manual operation of the switch through a diaphragm. A switch mechanism, mounted within the housing, has an electromagnet, a plurality of pairs of contacts for controlling external electric circuits, a pair of control contacts for controlling the power to the electromagnet, and an armature movable in response to energizing and deenergizing of the electromagnet. When the actuator is pulled outwardly, a projection thereon closes the control pair of contacts, energizing the electromagnet, and causing the armature to close the remaining pairs of contacts and hold closed the control pair. Pushing the actuator inwardly opens the control contact pair, which deenergizes the electromagnet and thereby opens the other pairs of contacts. If any contact pair tacks together upon deactivation of the switch, movement of the actuator will cause a corresponding additional projection to engage and separate the tacked pair. After movement of the actuator in either direction, it returns to a center position.
REFERENCES:
patent: 3622925 (1971-11-01), Rose
patent: 3842375 (1974-10-01), Collette
patent: 3925742 (1975-12-01), Muench
patent: 4246559 (1981-01-01), Budrose
Broome Harold
Hobart Corporation
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