Plural sealed contact units with common electromagnetic operatin

Details Plural sealed contact units with common electromagnetic operatin Plural sealed contact units with common electromagnetic operatin

1993-06-24

1995-05-30

Scott, J. R.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Contact-actuating means

200243, 335202, 218 1, H01H 166, H01H 300

Patent

active

054205557

ABSTRACT:
A sealed contact unit that attains stabilized contact switching operation and effective dimensional minimization with an arrangement wherein a switching contact section including opposing movable and stationary contacting members is housed within a sealed container together with an electrically insulating gas, a movable shaft interlocked to the movable contacting member is hermetically passed through a wall of the container to be axially shiftable with an end projected externally while the movable contacting member biased away from the stationary contacting member by a resetting spring is mounted through a contact-pressure spring to the other end of the movable shaft inside the container, the contact-pressure spring being provided to coaxially enclose the movable shaft and biasing the movable contacting member against the biasing force of the resetting spring for attaining a contact-pressure when the movable contact member shifts to engage the stationary contact member fixed inside the container, a driving section for switching ON and OFF between movable and stationary contacts of the movable and stationary contacting members is engaged to the projected end of the movable shaft for axial drive of the shaft.

REFERENCES:
patent: 2929903 (1960-03-01), Fillette
patent: 3845263 (1974-10-01), Dickinson
patent: 4153827 (1979-05-01), Mircovich et al.
patent: 4306123 (1981-12-01), Taylor
patent: 4513181 (1985-04-01), Boysen et al.
patent: 4638275 (1987-01-01), Belbel et al.
patent: 4866227 (1989-09-01), Toguchi et al.
patent: 4924040 (1990-05-01), Orrico

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