Invention Grant
- Patent Title: Vacuum switch with pre-insertion contact
- Patent Title (中): 真空开关带有预插接触
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Application No.: US12986548Application Date: 2011-01-07
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Publication No.: US08445805B2Publication Date: 2013-05-21
- Inventor: Michael David Glaser
- Applicant: Michael David Glaser
- Agent Donald J. Ersler
- Main IPC: H01H33/66
- IPC: H01H33/66

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.
Public/Granted literature
- US20120175347A1 Vacuum Switch With Pre-Insertion Contact Public/Granted day:2012-07-12
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