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:
Dec. 28, 2010
Filed:
Mar. 24, 2008
Applicants:
Stephen D. W. Fosty, Brampton, CA;
Michael J. Vandenberg, Erin, CA;
Inventors:
Stephen D. W. Fosty, Brampton, CA;
Michael J. Vandenberg, Erin, CA;
Assignee:
Tyco Safety Products Canada Ltd., Concord, Ontario, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08G 13/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An alarm system comprises: an audio interface comprising: a microphone; a state sensor for sensing a state at the audio interface; a signal generator for generating an inaudible state signal indicative of the state; a multiplexer for combining an audio signal from the microphone and the state signal; a control panel for monitoring sensed conditions at the audio interface; a conductor interconnecting the audio interface to the control panel carrying audio signal and the state signal as combined from the audio interface to the control panel.