Egress direction indication system
Patent 4801928 Issued on January 31, 1989. Estimated Expiration Date: 
September 2, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 2, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2106968 3153745 3486068 3573541 3916404 Emergency alarm and evacuation system Emergency flashing light system for indicating exits of passenger carriers Emergency exit indicator Tape strip for effecting moving light display Exit illuminating system InventorAssigneeApplicationNo. 06/902662 filed on 09/02/1986US Classes:340/691.2, Simulated effect340/309.4, Selectively or sequentially actuated indicators340/332, Signal light systems340/691.4, Plural362/147, Wall or ceiling40/544ElectroluminescentExaminersPrimary: Swann, III, Glen R.Attorney, Agent or FirmInternational ClassesG08B 5/22 (20060101)G08B 5/36 (20060101) A62B 3/00 (20060101) AbstractAn egress detection system includes an indicator unit having at least three electroluminescent lamps in a linear arrangement and circuitry for sequentially illuminating the electroluminescent lamps on a repeated basis in order from one end of the linear arrangement to the other end of the linear arrangement. The indicator unit includes a plastic extruded panel containing a circuit board on which the electroluminescent lamps are mounted, and a lens covering the electroluminescent lamps and bonded to the panel. The panel includes an electrical connector which allows the panel to be removed from the electronic circuitry and replaced. The electronic circuitry is also provided to sequentially illuminate a group of electroluminescent lamps in one direction in response to a first sensed condition of relative danger and in another direction in response to a second sensed condition of relative danger.Other References
Field of SearchSelectively or sequentially actuated indicators | |
