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Electrical switch, as for controlling a flashlight

  • US 9,478,371 B2
  • Filed: 08/31/2012
  • Issued: 10/25/2016
  • Est. Priority Date: 12/18/2007
  • Status: Active Grant
First Claim
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1. An electrical flashlight comprising:

  • a housing having a head end and a tail end and having a cavity for receiving a battery;

    an electrical light source disposed proximate the head end of said housing; and

    a switch disposed on said housing, comprising;

    a switch housing;

    an actuator displaceable within the switch housing;

    a biasing element;

    two normally open switch contacts;

    a third contact;

    an electrically conductive flexible dome, comprising;

    a central body;

    a plurality of first extensions connected with the central body; and

    a second extension connected from the central body;

    wherein the biasing element is disposed between the actuator and the flexible dome;

    wherein at least one of the first extensions engage the third contact prior to application of a first actuation force and the second extension contacts one of the two switch contacts when the first actuation force is applied to the dome, and wherein the central body closes a second of the normally open switch contacts when a second actuation force is applied to the dome;

    wherein the light source is responsive to closure, or opening, or both, of the two switch contacts of the switch for energizing and de-energizing the electrical light source when the battery is present in the cavity of the housing;

    wherein the biasing element extends the distance that the actuator is displaced to apply the second actuation force to the dome to close the second of the normally open switch contacts.

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