Electromagnetic device for controlling the supply of current to

Details Electromagnetic device for controlling the supply of current to Electromagnetic device for controlling the supply of current to

1993-06-01

1994-10-25

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Multiple contact type

335131, H01H 6702

Patent

active

053593065

ABSTRACT:
The device comprises two fixed contacts, a movable assembly coupled to the central portion of a movable contact the free ends of which can cooperate with the said fixed contacts, and a control electromagnet comprising a solenoid and a movable core displaceable from an initial rest position to a final position in which it strikes a stop element carrying with it the movable assembly so as to bring the end of the movable contact against the fixed contacts before reaching the final position. The movable contact can flex resiliently like a beam under the effect of its engagement with the fixed contacts. When the core strikes the stop element, the fixed contacts oscillate about their normal working positions. The movable contact is made in such a way that, as the fixed contacts start to oscillate its free ends follow the movements of the fixed contacts, its acceleration in its own mode of vibration being greater than the acceleration of the fixed contacts and its amplitude of oscillation being greater than the amplitude of oscillation of the fixed contacts.

REFERENCES:
patent: 5142924 (1992-09-01), Fasola et al.

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