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Smoke detector

  • US 4,257,039 A
  • Filed: 12/26/1978
  • Issued: 03/17/1981
  • Est. Priority Date: 12/26/1978
  • Status: Expired due to Term
First Claim
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1. In a smoke detector having a housing consisting of a base and a cover, and having a smoke sensing chamber, means to activate an alarm upon the sensing of a predetermined smoke level by the sensing chamber, and an alarm, all of which are mounted in the base of said housing;

  • said base having at least one downwardly side wall, and a bottom wall, the improvement comprising;

    a pair of lamp sockets, each mounted generally normal to said side wall, and disposed 180°

    apart from each other on said side wall, each socket having an electric light bulb therein adapted to be lit when said sockets are energized, each of said sockets being electrically connected to;

    a means to energize said sockets when the alarm sounds and deenergize said sockets when the alarm ceases;

    whereby a path of egress from the vicinity of said smoke detector is lighted when the detector detects smoke and sounds the alarm.

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