Gas circuit-breaker
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United States of America Patent
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May 5, 2009
Grant Date -
Mar 29, 2007
app pub date -
Sep 25, 2006
filing date -
Sep 26, 2005
priority date (Note) -
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Abstract
In an interrupter of a gas circuit breaker that uses springs as a driving source, a contact having a fixed contact and movable contact is opened and closed so as to turn on and off electric power. An operation unit generates driving force for driving the movable contact. A link mechanism interconnects the operation unit and interrupter. The link mechanism has a first lever linked to the operation unit, a second lever linked to the movable contact, and a rotational shaft to which the two levers fit. The operation angle of the first lever with respect to a direction parallel to the motion direction of the movable contact differs depending on whether the contact is open or closed. The gas circuit breaker operates at high speed without the energy of the driving source being increased.
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