Patents Assigned to Electric Services, Inc.
  • Vacuum operated circuit breaker apparatus for replacing air-magnetic circuit breaker assemblies
    Patent number: 4950854
    Abstract: A replacement vacuum operated circuit breaker assembly for voltage distribution switchgear fits into switchgear cubicles that are shaped to accommodate air magnetic circuit breaker assemblies such as the Allis Chalmers 5KV series. The replacement breaker assembly frame configuration and adjustable contact poles allow the replacement assembly to be installed in the original switchgear without expensive modifications to the cubicles.
    Type: Grant
    Filed: October 31, 1989
    Date of Patent: August 21, 1990
    Assignee: Electric Services, Inc.
    Inventor: Ian P. Green