U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Emergency evacuation system

Patent 6313549 Issued on November 6, 2001. Estimated Expiration Date: Icon_subject September 12, 2017. 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

3916404

Emergency lamp and solid state switching circuit therefor
Patent #: 3976986
Issued on: 08/24/1976
Inventor: Zabroski

Emergency light battery charger circuit
Patent #: 4150302
Issued on: 04/17/1979
Inventor: Roche

Battery charging circuit for an emergency system
Patent #: 4223232
Issued on: 09/16/1980
Inventor: Bulat

Emergency lighting system
Patent #: 4297614
Issued on: 10/27/1981
Inventor: Chandler

Escape/rescue system
Patent #: 4385586
Issued on: 05/31/1983
Inventor: Schriever

Emergency device employing programmable vocal warning commands
Patent #: 4453222
Issued on: 06/05/1984
Inventor: Goszyk

Power-supply/battery back-up power supply/battery charger combination
Patent #: 4672293
Issued on: 06/09/1987
Inventor: Crampton

Wireless emergency lighting unit
Patent #: 4682078
Issued on: 07/21/1987
Inventor: Pascalide

Emergency lighting circuits
Patent #: 4686424
Issued on: 08/11/1987
Inventor: Nuckolls ,   et al.

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Inventors

Application

No. 928288 filed on 09/12/1997

US Classes:

307/66, Storage battery or accumulator52/174, WITH TRAFFIC-GUIDING FEATURE340/333, With specific power supply (e.g., power substitution)439/114Bus duct

Examiners

Primary: Ballato, Josie
Assistant: Zura, Peter

Attorney, Agent or Firm

International Class

G08B 007/00

Abstract

Embodiments of an emergency evacuation system are disclosed which may be installed within the knockouts of a panel of a modular work space system. During normal operation a battery power source within the emergency evacuation system is charged by normal AC power supplied through the modular work space system. In the event of a power outage or fire, the battery power source serves to operate emergency lighting.

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