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US 4,372,394 AGranted
Magnetically driven pulverizer
OwnerTheodore H. Allegri, Sr.inventor
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OwnerTheodore H. Allegri, Sr.inventor
Estimating the term…
This invention relates to a system for the prevention of caking or solidification of powdered and granular materials in fire extinguishers and other cylindrical or closed containers. Dry chemical fire extinguishers sometimes fail to function when the material contained in their cylindrical bodies solidifies and cannot be vented through the nozzle of the extinguisher. Fire extinguishers can be rendered more effective and failsafe by way of this invention since, by rapid rotation of a coil or other form or forms imbedded within the material, the material may be fluffed up and caking, solidification, or impactment from settlement may be eliminated thereby. Also, any contained powdered or granular material may be stirred by creating turbulence within the material by rotating a coiled steel form or other forms through the use of a magnetic force induced through the walls of the container.
In combination with a fire extinguisher having a pressurized container including a throat portion at one end, and a nozzle assembly screwed into the throat portion, the improvement of a magnetically driven mixing means comprising a mixing element within said container adapted to be movable therein to mix the contents of the container in response to an externally generated magnetic field, means for generating said magnetic field, said means for generating said magnetic field including an annular ring member disposed about the container, said ring member being movable longitudinally relative to said container, said ring member having a plurality of horizontally spaced magnets affixed thereto and means for rotatably driving said annular ring member about said container.
In combination with a fire extinguisher having a pressurized cylinder including a narrow throat portion at one end, a nozzle assembly screwed into the throat portion, the improvement of a magnetically driven mixing means comprising a rotatable mixing element within said cylinder adapted to be rotated therein to mix the contents of the container in response to an externally generated rotating magnetic field, means for generating said rotating magnetic field, said means for generating said rotating magnetic field including a rotatable annular ring member disposed about the cylinder to substantially receive the container, said ring member having a plurality of horizontally spaced magnets affixed thereto and means for rotating said annular ring member.
A mixing device for mixing the contents of a closed container comprising a magnetically actuable mixing element disposed within the container and adapted to be movable therein along the length of the container and rotatable therein about the longitudinal axis of the container to mix the contents thereof in response to an externally generated magnetic field, means for generating said magnetic field, said means for generating said magnetic field including an annular ring member disposed about the container to substantially receive the container, said ring member having a plurality of horizontally spaced magnets affixed thereto and means for rotatably driving said annular ring member about said container.
Dependencies are inferred from the claim text.