Invention Grant
US08445805B2 Vacuum switch with pre-insertion contact 有权
真空开关带有预插接触

  • Patent Title: Vacuum switch with pre-insertion contact
  • Patent Title (中): 真空开关带有预插接触
  • Application No.: US12986548
    Application Date: 2011-01-07
  • Publication No.: US08445805B2
    Publication Date: 2013-05-21
  • Inventor: Michael David Glaser
  • Applicant: Michael David Glaser
  • Agent Donald J. Ersler
  • Main IPC: H01H33/66
  • IPC: H01H33/66
Vacuum switch with pre-insertion contact
Abstract:
A vacuum switching device with pre-insertion contact arrangement is disclosed. The vacuum switch includes first and second contact systems. The first contact system includes an annular stationary contact and an annular moving contact retained on a moving contact drive rod. A second contact system includes a moving contact retained on an end of the moving contact drive rod and a floating contact retained along the same axis as the second moving contact. Both contact systems are enclosed in a vacuum envelope. A mechanical adjustment system is provided for the floating contact, which allows it to be positioned so that the secondary moving contact and floating moving contact may engage at a set interval before the annular moving contact engages the annular stationary contact. A resistor or inductor is connected between the second contact system and a load to prevent a current in-rush into the load.
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