Control Of Blast Valve And Contacts Patents (Class 218/88)
  • Puffer type circuit interrupter with improved blast valve and permanent contacts
    Patent number: 5424503
    Abstract: A circuit-breaker includes first and second permanent contacts, a support tube for a mobile arc contact and a blast nozzle. At least one of these components is fixed via an interference fit. The blast nozzle abuts against one end of a tubular support member with an annular end flange. It bears at the opposite end against a first permanent contact end-piece which is fixed by a clamping ring to the annular flange of the support member.
    Type: Grant
    Filed: September 9, 1993
    Date of Patent: June 13, 1995
    Assignee: GEC ALSTHOM T&D SA
    Inventor: Andre Neveu