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Room occupancy indicator means and method

  • US 5,309,146 A
  • Filed: 09/24/1992
  • Issued: 05/03/1994
  • Est. Priority Date: 05/03/1988
  • Status: Expired due to Fees
First Claim
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1. A method of indicating the presence or absence of a person in a room having a door, a wall outside the room, presence sensing means in said room to sense the presence or absence of a person in the room, said method comprising providing indicating means on said wall outside said room, said indicating means being coupled to said sensing means, and operating said indicating means from outside said room to display thereon, for use by a person outside the room, the presence or absence of a person in the room, such operation of said indicating means comprising the step of flashing a light of said indicating means to indicate presence and operating another light of said indicating means steadily to indicate absence.

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