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Light emitting smoke detector

  • US 4,227,191 A
  • Filed: 02/21/1978
  • Issued: 10/07/1980
  • Est. Priority Date: 02/21/1978
  • Status: Expired due to Term
First Claim
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1. A protection system including a smoke detector section and an escape light section, in which the smoke detector section includes means for detecting the presence of a predetermined level of smoke density and providing an electrical output signal when said level is reached, and means for receiving said signal and providing an audible alarm only as long as said smoke density remains above said predetermined level, the system improvement in which the escape light section comprises additional means for receiving said signal and providing a high-intensity, continuous light of a level sufficient to illuminate the adjacent floor area only as long as the smoke density remains above said predetermined level, and in which said system includes first and second power supply means, said first power supply means independently operating said smoke detector section, and said second power supply means independently operating said escape light section.

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