Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific current responsive fault sensor
Patent
1993-01-04
1995-07-04
DeBoer, Todd
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific current responsive fault sensor
361115, 200181, 310309, 310350, 257622, H01H 7300
Patent
active
054305977
ABSTRACT:
A circuit interruption device having a plurality of micromechanical switches mounted on a substrate in a parallel-series array. The array includes a plurality of line branches connected in parallel in a circuit line. Each of the line branches has at least two of the switches serially connected therein. The micromechanical switches each has a pair of contacts formed on the substrate, a bridging contact movably formed on the substrate, and an actuator for causing the bridging contact to move in and out of contact with the contacts. The bridging contact can be either a member slidably disposed in a channel formed on the substrate or member attached to an end of a cantilever having its other end attached to the substrate. The actuator is controlled by a trip device which is also mounted on the substrate. The trip device senses the current in the circuit line and causes the switches to open when a predetermined level of current in the line is exceeded.
REFERENCES:
patent: 3601632 (1971-08-01), Frazier
patent: 4570139 (1986-02-01), Kroll
patent: 4656445 (1987-04-01), Bagepalli et al.
patent: 4959515 (1990-09-01), Zavracky et al.
patent: 5149673 (1992-09-01), MacDonald et al.
patent: 5322258 (1994-06-01), Bosch et al.
Bagepalli Bharat S.
Ghezzo Mario
Imam Imdad
Saia Richard J.
DeBoer Todd
General Electric Company
Scanlon Patrick R.
Webb II Paul R.
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