Contact assembly having a current-dependent force increasing the

Details Contact assembly having a current-dependent force increasing the Contact assembly having a current-dependent force increasing the

1985-08-28

1987-01-13

Goldberg, E. A.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Contact-actuating means

335 16, 335147, 200147R, H01H 300

Patent

active

046367624

ABSTRACT:
A contact assembly for electrical circuit breakers has a contact lever and a lever support with the contact lever mounted thereon in an articulate fashion. The support lever is flexibly positioned around a fixed pivot bearing by a drive linkage device for on- and off-switching cycles. A pressure lever is used to introduce a current-dependent force onto the contact levers in order to increase the contact force. The pressure lever is similarly flexibly mounted onto the lever support. The contact lever and the pressure lever operate jointly via their working surfaces which permit a conveyance of force in terms of an increase of the contact force. When switching on the contact assembly, the pressure lever is decoupled from the contact lever so that the tendency to bounce is reduced.

REFERENCES:
patent: 1918232 (1933-07-01), Baker et al.
patent: 2545341 (1951-03-01), Caswell
patent: 2695345 (1954-11-01), Scott
patent: 2704311 (1955-03-01), Thumim
patent: 3550049 (1970-12-01), Blanc-Tailleur

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