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US 4,539,451 AGranted
Switch
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsTeijiro Mori, Yuichi Wada, Shizutaka Nishisako, Hiroaki Tazawa, Shigeru Masuda
Life of this patent
Estimating the term…
Abstract
A switch for making and breaking an electric current and having an arc-extinguishing mechanism. Said switch includes a fixed contact plate having a fixed contact thereon, a movable contact plate having a fixed contact adapted for movement to come into and go out of said fixed contact and an arc deflecting plate provided substantially parallel to said movement. Said arc deflecting plate is made of magnetic metal and is formed with a U-shaped portion in proximity to said fixed contact plate.
Claims12
A switch comprising:
- fixed contact means;
- movable contact means adapted for movement to come into contact with said fixed contact means and to go out of contact with the same such that a first gap is defined therebetween;
- and
- an arc deflecting plate of magnetic metal provided generally in parallel with said movement, said arc deflecting plate being formed with a U-shaped tongue-like bent portion in proximity to said fixed contact means, said fixed contact means including a fixed contact plate and a fixed contact affixed to said fixed contact plate at an end portion thereof, said fixed contact plate extending in a direction generally perpendicular to said arc deflecting plate to define a second gap therebetween, said U-shaped portion having an outer bottom portion in facing relation to a selected one of said first and second gaps.
1 more element
Dependencies are inferred from the claim text.