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Light generating apparatus for curing dental restorative composites

  • US 4,450,139 A
  • Filed: 05/03/1982
  • Issued: 05/22/1984
  • Est. Priority Date: 05/03/1982
  • Status: Expired due to Fees
First Claim
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1. An apparatus for interconnecting an alternating current source with light generating means for a time cycle beginning after an initial dwell time, comprising:

  • (a) time delay means;

    (b) cycle control means operatively coupled to said time delay means, said cycle control means being activated for a preselected time interval after activation of said time delay means; and

    (c) switch means coupled with said cycle control means and interconnected between the alternating current source and the light generating means, said switch means;

    in response to the activation of said cycle control means, interconnecting the alternating current source with the light generating means when the alternating current source crosses a zero voltage point in the alternating current cycle; and

    in response to the deactivation of said cycle control means, disconnecting the alternating current source from the light generating means.

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