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:
May. 12, 2009
Filed:
Aug. 08, 2006
Applicants:
Mark P. Barrieau, Baldwinville, MA (US);
Robert W. Farley, Ashburnham, MA (US);
Inventors:
Mark P. Barrieau, Baldwinville, MA (US);
Robert W. Farley, Ashburnham, MA (US);
Assignee:
SimplexGrinnell LP, Westminster, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A hazard alarm includes: a detector for detecting a hazard parameter, trigger logic; and reset logic. The trigger logic triggers an alarm state when the measured parameter reaches a predetermined trigger threshold. The alarm state is maintained until a reset is successfully performed. The reset logic, upon a reset command, resets the alarm state if the measured parameter is below a predetermined reset threshold, and inhibits resetting of the alarm state if the measured parameter is above the predetermined reset threshold.