Electrical device comprising a controlled piezoelectric...

Details Electrical device comprising a controlled piezoelectric... Electrical device comprising a controlled piezoelectric...

2006-05-23

2006-05-23

Donovan, Lincoln (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Multiple contact type

C310S314000, C310S328000

Reexamination Certificate

active

07049912

ABSTRACT:
An electric switching device of which each power pole includes a movable bridge equipped with at least one movable contact that co-operates with at least one fixed contact of the pole between open and closed positions. The switching device includes at least one approach actuator—bistable or of Voice Coil type—acting on the movable bridges to distance and bring together the movable contacts of the movable bridges and the fixed contacts. Each pole includes a force actuator, e.g., piezoelectric, to establish contact pressure or contact switching, without the use of a mechanical restoring device.

REFERENCES:
patent: 4383195 (1983-05-01), Kolm et al.
patent: 4473859 (1984-09-01), Stone et al.
patent: 4595855 (1986-06-01), Farrall
patent: 6359374 (2002-03-01), Dausch et al.
patent: 2002/0135447 (2002-09-01), Gruner
patent: 198 13 128 (1999-09-01), None
patent: 10 241481 (1998-09-01), None

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