H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/218
H01H 33/66 (2006.01) H01H 33/664 (2006.01)
Patent
CA 1077547
A VACUUM TYPE CIRCUIT INTERRUPTER WITH A CONTACT HAVING INTEGRAL AXIAL MAGNETIC FIELD MEANS ABSTRACT OF THE DISCLOSURE A vacuum type circuit interrupter is provided with contacts which include an integral axial magnetic field generating means. In one embodiment, a disc-like contacting portion is supported from the contact base, with a pair of half-turn conductive coil pieces extending between the base and the disc-like contacting portion. In another embodiment, the contacts have a cup-shaped base portion with a radially inwardly directed lip portion at the end of the cup-shaped portion to serve as the normal current carrying contact when the contacts are closed. The lip portions of these cup- shaped contacts are parted when the contacts are moved to the open position and the initial arc travels in a circular path around the annular lip. An auxiliary recessed disc- like contact portion is provided within the space defined by the cup-shaped base contact portion. The disc-like contact portion is supported from the base portion, and half-turn conductive coil pieces extend between the disc-like portion and the base portion of the contact so that an axial magnetic field may be generated when the contacts are in the open position.
278539
Gorman Joseph G.
Roach James F.
Wayland Paul O.
Gorman Joseph G.
Roach James F.
Wayland Paul O.
Westinghouse Electric Corporation
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