The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 23, 2010
Filed:
Dec. 06, 2007
Joseph Piccolo, Iii, Fitzwilliam, NH (US);
Laurent Veilleux, Lachine, CA;
Maxime Fortin, La Prairie, CA;
Daniel Lauzon, Lachine, CA;
Joseph Piccolo, III, Fitzwilliam, NH (US);
Laurent Veilleux, Lachine, CA;
Maxime Fortin, La Prairie, CA;
Daniel Lauzon, Lachine, CA;
SimplexGrinnell LP, Westminster, MA (US);
Abstract
An emergency evacuation and fire safety system has a plurality of signal devices. The clock source frequencies are tuned using the method and system such that the signals flash in synchronization continuously at a preset flashing interval upon detecting an alarm condition. A synchronization signal including a calibrated time position is broadcast at each predetermined time interval to all notification appliances. A time difference is computed between a local time position and the received calibrated time position by each of the notification appliances at each predetermined time interval and tuning the flashing of each of the one or more notification appliances by adjusting the preset flashing interval based on the computed time difference by each of the one or more associated notification appliances.