Electricity: circuit makers and breakers – Contact moved by sudden release of stored energy
Patent
1999-09-28
2000-11-07
Friedhofer, Michael
Electricity: circuit makers and breakers
Contact moved by sudden release of stored energy,
200308, H01H 500, H01H 916, H01H 920
Patent
active
061440027
ABSTRACT:
A switchgear apparatus having at least one movable contact biased in an open position by an opening spring, a loading mechanism of a closing spring and a kinematic opening and closing system linking the closing spring, the movable contact and the opening spring. The system is controlled by an opening latch and a closing latch. A closing order can be validly transmitted only to the closing latch when the apparatus is in a "ready to close" state, i.e. open, loaded and without a permanent opening order. The switchgear apparatus has an indicator with three positions: a "not loaded" position, a "ready to close" position, and a third "loaded and not ready to close" or "loaded disengaged" position. The indicator is kinematically linked to the loading mechanism, the opening latch, and the movable contact.
REFERENCES:
patent: 4301342 (1981-11-01), Castonguay et al.
patent: 4409449 (1983-10-01), Takano et al.
patent: 5504290 (1996-04-01), Baginski et al.
patent: 5584383 (1996-12-01), Matsuo et al.
patent: 5981887 (1999-11-01), Robarge et al.
patent: 5981888 (1999-11-01), Robarge et al.
Coudert Patrick
Grelier Claude
Pinero Eric
Friedhofer Michael
Schneider Electric Industries SA
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