Patent Number: 6,295,191

Title: Switching apparatus

Abstract: A switching apparatus includes a switch, a movable coil, stationary coil members, and a direction-of-conduction setter comprising diodes. The switch has a stationary electrode. The movable coil is fixedly mounted on a movable shaft coupled to the movable electrode. The stationary coil members are opposed to the movable coil. The power supply supplies an excitation current to the coils. The direction-of-conduction setter sets the direction of conduction, in which the excitation current flows from the power supply into the coils, so that the coils will electromagnetically react on each other. This arrangement provides highly efficient electromagnetic driving. Moreover, an opening power supply or closing power supply is required to have only a small capacity.

Inventors: Kishida; Yukimori (Tokyo, JP), Kagawa; Kazuhiko (Tokyo, JP), Sasao; Hiroyuki (Tokyo, JP), Takahashi; Chie (Tokyo, JP), Takeuchi; Toshie (Tokyo, JP), Akita; Hiroyuki (Tokyo, JP), Moritoh; Eiji (Tokyo, JP)

Assignee: Mitsubishi Denki Kabushiki Kaisha

International Classification: H01H 33/28 (20060101); H01H 33/66 (20060101); H01H 047/00 ()

Expiration Date: 09/25/2018