Patent ID: 7726411
Filing Date: 2010-06-01
Classification: A62C,G08B

Abstract:
1. An apparatus for remote inspection of a fire extinguisher, the apparatus comprising: wherein the fire extinguisher comprises a tank defining a volume containing fire extinguishing material; a global positioning system receiver located with the fire extinguisher, the global positioning receiver configured to generate location information from signals received from a constellation of global positioning satellites; an electronic circuit in communication between the global positioning system receiver and a remote central station and configured to issue a signal to the remote central station for at least one of indicating a location of the fire extinguisher and indicating detection of at least one predetermined internal condition and at least one predetermined external condition; an electrical connection for communicating the at least one predetermined internal condition, wherein the at least one predetermined external condition includes lack of presence of the fire extinguisher as indicated by the electrical connection being disengaged; a pressure sensor for detection of a pressure condition of the fire extinguishing material contained within the volume of the fire extinguisher tank; and an ultrasonic obstruction sensor configured to detect an obstruction blocking access to the fire extinguisher, wherein the ultrasonic obstruction sensor is periodically active.