B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
B23K 10/00 (2006.01) B23K 9/29 (2006.01) H05H 1/34 (2006.01) H05H 1/36 (2006.01)
Patent
CA 2065852
A quick disconnect connector for both electrical power and gas flow to a plasma arc torch has a plug that includes at least one pin contact and a mating receptacle that includes at least one socket contact that receives the pin contact axially. Both contacts have a central axial passage that conducts the gas flow at a sufficient rate to cool the contacts when they are conducting a large heavy operating current, typically 20 to 1,000 amperes, D.C. For high voltage operation, each contact is closely surrounded by a barrier sleeve of a dielectric material which is supported in an insulating body filling the plug or receptacle. The sleeved contacts are mounted to pivot independently of one another about a central mouning boss for self-alignment on mating. O-rings seal the sleeves to the insulator bodies to restrict the gas to a connection zone of the connector. The sleeve barrier axial length and that of the insulating bodies exceed the minimum tracking distance at the high voltages (typically 5 KV) and high frequencies (typcially 2-3 mHz) associated with start-up of the torch.
Gratziani Isaac
Sanders Nicholas A.
Hypertherm Inc.
Riches Mckenzie & Herbert Llp
LandOfFree
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