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Proximity instant-on switch for medical and dental instruments

  • US 4,274,070 A
  • Filed: 08/14/1979
  • Issued: 06/16/1981
  • Est. Priority Date: 08/14/1979
  • Status: Expired due to Term
First Claim
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1. A proximity instant-on switch for an electrical medical or dental instrument that is adapted to seat in a holder disposed on a medical or dental unit, comprising magnetic switching means including a permanent magnet embedded in said holder and a magnetically-responsive switch member electrically connected to the instrument load and disposed in the handle of the instrument such that when the instrument is placed in said holder the instrument is de-energized by said magnetic switching means and when the instrument is removed from said holder the instrument is automatically energized by said magnetic switching means.

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