Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Automatic circuit-interrupting devices
Patent
1995-06-07
1997-10-21
Scott, J. R.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Automatic circuit-interrupting devices
335154, H01H 5054, H01H 5064, H01H 166, H01H 3364
Patent
active
056800843
ABSTRACT:
A sealed contact device includes a sealed contact section having a sealed container defining therein a gas-tight space together with a bellows for housing therein electrodes and sealing therein a gas preferably consisting mainly of hydrogen, the electrodes including fixed electrodes and movable electrodes engageable with and separable from the fixed electrodes, a contact pressure spring biasing the movable electrodes in engaging direction with respect to the fixed electrodes, a resetting spring biasing the movable electrodes in separating direction from the fixed electrodes, and a movable shaft projected at an end out of the sealed container and coupled at the other end to the movable electrodes; a driving member providing at a movable part a drive force for driving the movable shaft in the direction of engaging the electrodes; and a relaying member interposed between the movable shaft of the sealed contact section and the movable part of the driving member and having a regulating element for regulating driving position of the movable shaft, the relaying member being coupled to the movable part and including a coupling element coupled through the regulating element to the movable shaft.
REFERENCES:
patent: 4638275 (1987-01-01), Belbel et al.
patent: 4866227 (1989-09-01), Toguchi et al.
patent: 5420555 (1995-05-01), Toguchi et al.
Chuzawa Takaaki
Kishi Hideki
Toguchi Takehiko
Uotome Riichi
Matsushita Electric & Works Ltd.
Scott J. R.
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