Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – With bimetallic elements
Reexamination Certificate
2008-07-23
2010-10-26
Vortman, Anatoly (Department: 2835)
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
With bimetallic elements
C337S036000, C337S037000, C337S082000, C335S035000, C335S045000, C335S145000, C335S173000, C361S093800, C361S105000
Reexamination Certificate
active
07821376
ABSTRACT:
A method for adjusting a trip sensitivity in a thermal overload protection apparatus, including setting an adjusting reference point; measuring a normal position of bimetals; measuring a moving distance at a time of trip operation of a trip latch mechanism; deciding an assembling position of a shifter mechanism based on the measured moving distance at the time of trip operation of the trip latch mechanism, information on a trip distance between a pre-determined shifter mechanism and the trip latch mechanism and information on a size of the shifter mechanism; conducting a predetermined overcurrent to the thermal overload protection apparatus; measuring a conducting time of the overcurrent until a trip event; calculating a difference between the conducting time measured in the measuring step and a predetermined trip time by converting a rotation angle; and marking a graduation of a set trip operation current by the rotation angle calculated in the calculating step.
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U.S. Appl. No. 12/178,118 to Lee, which was filed on Jul. 23, 2008.
Greenblum & Bernstein P.L.C.
LS Industrial Systems Co., Ltd.
Vortman Anatoly
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