Switchgear

Details Switchgear Switchgear

1997-04-03

2000-04-04

Donovan, Lincoln

High-voltage switches with arc preventing or extinguishing devic

Arc preventing or extinguishing devices

Operating mechanism structure or arrangement

218109, H01H 300, H01H 324, H01H 332

Patent

active

060464232

ABSTRACT:
In a switchgear, by using a spring with a varying spring constant from closing to electrode opening as a loading spring, spring load in the opened electrode state is made smaller than a spring load in the closed electrode state to decrease the energy required from electrode closing up to electrode opening. Moreover, by using a spring in which a load in the opposite direction to a load in the closed electrode state works in the opened electrode state, the opened electrode state can be held securely.

REFERENCES:
patent: 2843698 (1958-07-01), Knauth
patent: 3268687 (1966-08-01), Waghorne et al.
patent: 3378727 (1968-04-01), Kesselring
patent: 3624569 (1971-11-01), Shaffer
patent: 4086645 (1978-04-01), Gorman et al.
patent: 4544986 (1985-10-01), Buechl
patent: 5015979 (1991-05-01), Nakanishi et al.
patent: 5558054 (1996-09-01), Ariga et al.
patent: 5592905 (1997-01-01), Born
patent: 5765513 (1998-06-01), Diehl et al.
T/23 036 (51) H 01 H 33/35 (71) Hungarian Abstract, Jul. 28, 1982.

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