Means for suppressing contact-separation at the end of a vacuum

Details Means for suppressing contact-separation at the end of a vacuum Means for suppressing contact-separation at the end of a vacuum

1978-03-23

1980-09-30

Scott, James R.

Electricity: circuit makers and breakers

Liquid contact

Time delay

H01H 3366

Patent

active

042257638

ABSTRACT:
A vacuum-type circuit breaker comprises (a) a plurality of vacuum circuit interrupters, (b) a common operating member through which closing force is applied to the movable contact rods of all the interrupters, (c) a wipe mechanism for each interrupter, and (d) a plurality of linkages, one for each interrupter, each being connected between the common operating member and the wipe mechanism for the associated interrupter. Each linkage comprises a plurality of pin joints connected mechanically in series between said common operating member and the associated wipe mechanism. Opening spring means effectively located at the movable contact rod end of each linkage that comprises at least three of said series connected pin joints applies a bias to said latter linkage that acts upon all of the pin joints in said latter linkage to eliminate from the acted-upon pin joints such clearance as allows reversal of the associated movable contact rod immediately following contact-engagement near the end of a closing operation while closing force is still being applied to said associated linkage through said common operating member.

REFERENCES:
patent: 3527910 (1970-09-01), Mitchell, Jr. et al.
patent: 3582587 (1971-06-01), Barkan
patent: 3594525 (1971-07-01), Miller et al.
patent: 3792213 (1974-02-01), Kane et al.
patent: 4099039 (1978-07-01), Barkan
patent: 4153828 (1979-05-01), Barkan

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