High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Vacuum
Patent
1998-01-30
1999-01-26
Donovan, Lincoln
High-voltage switches with arc preventing or extinguishing devic
Arc preventing or extinguishing devices
Vacuum
218120, 218136, H01H 3366
Patent
active
058641092
ABSTRACT:
A terminal connection locking apparatus for a vacuum circuit breaker a trapping latch movably engaged to a driving cam, a crossbar connected to a lower portion of the trapping latch, change levers connected to a central lower surface portion and each side lower surface portion of the crossbar, springs elastically connected to the side change levers, a control lever disposed to a side portion of the contact control screw and externally exposed from the vacuum circuit breaker, a restoring link extended inwardly from the control lever, an interlock lever downwardly connected to an inner end portion of the restoring link, a spring elastically connected to the interlock lever, an engagement link connected to a side portion of control lever and horizontally spaced from the central change lever coupled to the crossbar, and a shielding plate for being rotatably connected to an end portion of the engagement link and covering/discovering the contact control screw. The apparatus facilitates a terminal connection locking operation and obtains an safety with regard to the operation for preventing the disconnection of the circuit breaker.
REFERENCES:
patent: 3898407 (1975-08-01), Hodgson
patent: 4996397 (1991-02-01), Kuhn et al.
patent: 5523536 (1996-06-01), Binder et al.
Donovan Lincoln
LG Industrial Systems Co. Ltd.
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