High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Vacuum
Patent
1993-10-01
1995-06-06
Scott, J. R.
High-voltage switches with arc preventing or extinguishing devic
Arc preventing or extinguishing devices
Vacuum
H01H 3342, H01H 3366
Patent
active
054224500
ABSTRACT:
A vacuum circuit breaker including a vacuum interrupter with a fixed electrode and a movable electrode arranged to be moved into contact with or separated from the fixed electrode. The vacuum circuit breaker includes a movable rod mounted on the movable electrode, an operating mechanism unit for generating operating force to perform the opening and closing operation of the vacuum interrupter, a main shaft mounted on the operating mechanism unit and a drive lever rotatably mounted on the operating mechanism unit by the main shaft for transmitting the operating force towards the vacuum interrupter. The vacuum circuit breaker further includes a crank lever rotatably mounted at a working end of the drive lever and a pressurizing unit provided in the drive lever and the crank lever for generating resilient force to resiliently maintain closed condition of the vacuum interrupter. A first end of the crank lever is linked to the movable rod and transmits the operating force to the movable rod and a second end of the crank lever is linked to the pressurizing unit and transmits the resilient force to the movable rod.
REFERENCES:
patent: 3784774 (1974-01-01), Wilson
patent: 4550234 (1985-10-01), Steinemer
patent: 4593165 (1986-06-01), Steinemer
patent: 4996397 (1991-02-01), Kuhn et al.
patent: 5155315 (1991-10-01), Malkin et al.
High-Voltage Switchgear Catalogue HG5 Catalog of Circuit-Breakers AEG-Telefunken pp. 2, 11, 26.
Fujiwara Junji
Miyazawa Takayuki
Ogawa Satoshi
Satoh Kimiya
Taniguchi Makoto
Kabushiki Kaisha Toshiba
Scott J. R.
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