Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Multiple contact type
Patent
1979-04-20
1981-07-07
Broome, Harold
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Multiple contact type
335114, H01H 6706
Patent
active
042777666
ABSTRACT:
An electric circuit switching device comprises a group of closing contact pairs and a group of breaking contact pairs, each group having stationary contacts arranged circumferentially on an insulating panel, and a switching element; a unit for rotating the switching elements; and an electromagnetic drive providing translatory motion of the switching elements while closing and breaking the contact pairs. The unit for rotating the switching elements is a rotary electromechanical drive having a means for setting the angle of rotation of its output shaft depending on the position of the contacts to be switched on the insulating panel. The electromagnetic drive has two electromagnets, the first of which provides translatory motion of the switching element of the group of the closing contact pairs, and the second electromagnet providing translatory motion of the switching element of the group of the breaking contact pairs. Each electromagnet has a hollow core supporting a winding and embracing the output shaft of the rotary electromechanical drive, and an armature having a recoil spring rigidly connected to a respective switching element, electrically insulated from the switching element and mounted for movement along the output shaft. The group of the breaking contact pairs, apart from the stationary contacts, have spring-loaded contacts, each forming with one of the stationary contacts of said group a contact pair and being actuated by the switching element while breaking the contact pairs of said group.
REFERENCES:
patent: Re23453 (1952-01-01), Schleicher
patent: 2983802 (1961-05-01), Hannon
Kamshitsky Pavel V.
Koshman Vitaly I.
Petrichenko Vladimir F.
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