Hybrid DC electromagnetic contactor

Details Hybrid DC electromagnetic contactor Hybrid DC electromagnetic contactor

2006-07-18

2006-07-18

Jackson, Stephen W. (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Arc suppression at switching point

Reexamination Certificate

active

07079363

ABSTRACT:
In a hybrid DC electromagnetic contactor, by including a power unit for supplying a certain power voltage; a main contact point of a breaking switch for providing a supply path of the power voltage by being switched in accordance with a voltage apply to an operational coil; a switch for providing a supply path of the power voltage according to a gate signal; a snubber circuit for charging voltage at the both ends of the switch in turning off of the switch and being applied-discharged an electric current when the charged voltage is not less than a certain voltage; and a discharge current removing unit for removing the discharge current by providing a discharge current path to a load block in turning off of the switch, it is possible to minimize a size of leakage current when the main contact point and the semiconductor switch are turned off, and accordingly it can be practically used.

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Translation of the Official Action of the German Patent and Trademark office dated Apr. 26, 2005.
English Language Abstract of JP 2000-36238.
English Language Abstract of JP 8-195664.
English Language Abstract of JP 2002-95253.
English Language Abstract of JP 61-95611.
English Language Abstract of JP 8-55721.
English Language Abstract of JP 8-88552.
English Language Abstract of JP 8-725.
English Language Abstract of JP 6-169564.
English Language Abstract of JP 11-265644.
English Language Abstract of JP-113534.
English Language Abstract of JP 8-331859.
English Language Abstract of JP 11-178321.
English Language Abstract of JP 2000-188043.
English Language Abstract of JP 2000-036238.
English Language Abstract of JP 8-195664.
English Language Abstract of JP 2002-095253.
English Language Abstract of JP 61-095611.
English Language Abstract of JP 8-055721.
English Language Abstract of JP 8-088552.
English Language Abstract of JP 3-107328.
English Language Abstract of JP 6-113525.

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