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:
Nov. 11, 2008
Filed:
May. 17, 2004
John J. Andres, Colorado Springs, CO (US);
Michael W. Apperson, Chapel Hill, NC (US);
Joseph G. Deluca, Colorado Springs, CO (US);
Chris R. Gilbert, Colorado Springs, CO (US);
Craig Kleinberg, Colorado Springs, CO (US);
Larry Ratzlaff, Elgin, IL (US);
Stephen M. Ernst, Colorado Springs, CO (US);
John Wurtenberger, Colorado Springs, CO (US);
John J. Andres, Colorado Springs, CO (US);
Michael W. Apperson, Chapel Hill, NC (US);
Joseph G. DeLuca, Colorado Springs, CO (US);
Chris R. Gilbert, Colorado Springs, CO (US);
Craig Kleinberg, Colorado Springs, CO (US);
Larry Ratzlaff, Elgin, IL (US);
Stephen M. Ernst, Colorado Springs, CO (US);
John Wurtenberger, Colorado Springs, CO (US);
Walter Kidde Portable Equipment, Inc., Mebane, NC (US);
Abstract
Presented is a communications protocol for use by interconnected hazardous condition detectors, such as smoke and carbon monoxide detectors for use in dwellings and other structures. This communications protocol provides conventional signaling to indicate the presence of a smoke condition necessitating the generation of a smoke temporal pattern by all interconnected detectors. The protocol further defines a signaling method by which conventional smoke detectors that are incapable of providing temporal patterns other than that required for a smoke alarm condition will not be sent into an alarm mode of operation upon receipt of a signal other than the conventional smoke alarm signal. This communications protocol defines a pulsed signal to indicate a non-smoke alarm condition that is of a duration that will not trigger the conventional smoke alarms. To allow for the transmission of multiple hazardous conditions alarm notifications, as well as the transmission of additional hazardous condition detector control signals, the communications protocol utilizes a multi-bit signal transmitted via the conventional single signal I/O wire of currently existing interconnect wiring. Through the use of an 8 bit alarm signal, multiple hazardous conditions may be signaled as well as operating modes such as test, hush, reset, low battery, etc. Also presented are smoke, carbon monoxide, and combination hazardous condition detectors that utilize the communications protocol presented herein.