Emergency device employing programmable vocal warning commands
Patent 4453222 Issued on June 5, 1984. Estimated Expiration Date: 
April 19, 2002. 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.
April 19, 2002. 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 2479528 3310793 3582949 3906491 Alarm communications system Aircraft altitude annunciator Audio visual monitoring system for announcing a message upon detection of a monitored condition Heating apparatus provided with a voice synthesizing circuit Patent #: 4351999 InventorAssigneeApplicationNo. 06/369406 filed on 04/19/1982US Classes:704/274, Warning/alarm system340/521, Plural diverse conditions340/628, Smoke340/663UndervoltageExaminersPrimary: Kemeny, E. S.Attorney, Agent or FirmInternational ClassesG08B 3/10 (20060101)G10L 19/00 (20060101) G08B 3/00 (20060101) AbstractA warning device (10), typically situated in an illuminated exit warning sign, broadcasts voice commands generated by a synthetic speech synthesizer (U3) via speaker (SP1). A programmable microcomputer (U2) senses a loss of AC power and generates a user initiated voice command. Upon the detection of a fire or smoke condition, the microcomputer (U2) generates a priority warning. The device (10) includes a self-contained, charged power supply (12) that powers the microcomputer (U2) and the synthesizer (U3) in the event that the externally supplied AC power ceases. Constant illumination is provided by lamps (32) or (40). A user operated switch aids in programming the microcomputer to provide two sets of audible phrases.Other References
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