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US 7,115,831 B2Granted
Vacuum interrupter with a switch contact piece
AssigneeSiemens Aktiengesellschaft
InventorsThomas Chyla, Jörg Hagen, Helmut Holler, Karl Mascher
Life of this patent
Estimating the term…
Abstract
According to the invention, heat generated inside a vacuum interrupter (1) is to be extracted, essentially by means of the pins (7, 8) of the contact pieces (5, 6) and, in order to improve the transmission of heat, a first slide contact surface (18) of a slide contact arrangement is provided on a pin (7), whereby the first slide contact surface (18) is arranged on a first section of a pin (7) which comprises an enlarged circumference relative to the remaining sections of the pin (7).
Claims9
A vacuum interrupter comprising:
- a stationary contact and a moveable contact, the stationary contact and the moveable contact making a switching contact piece;
- and
- a strut connected to the moveable contact, wherein
- an end of the strut facing away from the switch contact piece includes an intermediate piece, the intermediate piece having a first sliding contact face which forms, with a second sliding contact face, an electrically conductive sliding contact arrangement, the intermediate piece having a greater circumference than remaining sections of the strut for improving electrical and thermal contact between the first sliding contact face and the second sliding contact face, and
- the intermediate piece has through-openings.
2 more elements
Dependencies are inferred from the claim text.