Method and apparatus for testing heat detectors
Patent 5611620 Issued on March 18, 1997. Estimated Expiration Date: 
December 29, 2014. 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.
December 29, 2014. 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 ReferencesSensor test circuit of an alarm system Exothermic composition Test initiation apparatus with continuous or pulse input Laser thermal testing method and system for use with a fire alarm system Radiant energy testing device for fire detectors Patent #: 5170148 InventorAssigneeApplicationNo. 365933 filed on 12/29/1994US Classes:374/1, THERMAL CALIBRATION SYSTEM340/515Simulation of conditionExaminersPrimary: Gutierrez, DiegoAttorney, Agent or FirmInternational ClassesG08B 029/00G01K 015/00 AbstractA method and apparatus for safely and conveniently testing heat detectors mounted at an elevated location above a ground surface. A package containing a composition formulated to react exothermically but non-flammably upon exposure to ambient air sustains a temperature sufficient to activate the heat detectors under feet for a period of at least a few minutes. The package is placed in a holder supported on a long handle for raising the package into close proximity to the heat detector. After initiating the exothermic reaction, as by tearing an envelope containing the reactive composition, an operator standing on the ground under the heat detector elevates the package into contact with or close proximity to the heat detector. | |
