Patent ID: 6125940
Filing Date: 2000-10-03
Classification: A62C

Abstract:
A pressure indicating system comprising:a dry chemical fire extinguisher having a threaded aperture in communication with contents of the fire extinguisher;a housing having a disk-shaped configuration with a front face, a rear face, and a periphery formed therebetween, the rear face having a threaded extension centrally mounted thereon and extending therefrom in coaxial relationship for being releasably engaged within the threaded aperture of the fire extinguisher;a battery compartment mounted within the housing and accessible via a rectangular cut out formed in the rear face of the housing below the threaded extension, the battery compartment further having a lid snappily coupled to the housing to selectively cover the battery compartment, wherein at least one battery is removably positioned within the battery compartment;a speaker mounted within the housing adjacent to a grill formed in a central extent of the front face thereof for providing an audible alarm during the actuation thereof;a variable resistance pressure gauge mounted within the threaded extension of the housing for providing an indication of an amount of pressure at which the contents of the fire extinguisher reside;a semicircular translucent screen mounted on the front face of the housing being divided into a first side section, a central section, and a second side section each having a unique color when light is passed therethrough;a light assembly including a plurality of lights positioned within the housing adjacent to the screen in side-by-side relationship each for passing therethrough upon the actuation thereof;a control driver connected between the battery, pressure gauge, and light assembly, the control driver adapted to actuate the lights of the light assembly from a first end of the screen to a second end of the screen as the pressure increases within the fire extinguisher, wherein the control driver is adapted to actuate the speaker intermittently upon the lights of the light assembly adjacent to the ends of the screen are actuated, thereby providing an audible indication when the fire extinguisher is overcharged and further providing an audible indication when the fire extinguisher is undercharged; andpressure measurement indicia positioned along an underside of the screen for providing an indication of an exact quantity of pressure of the contents of the fire extinguisher.