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US 4,071,170 AGranted
Portable motor driven dusting apparatus
AssigneeMeiko Co., Ltd.
InventorsRudolph M. Gunzel, Jr., Tony Radecki
Life of this patent
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Abstract
Powdered material such as insecticide or the like is moved from a hopper by the combined effect of gravity, vibration and induction of a rotary blower for distribution as a gas-powder suspension. The element for vibrating the powder is driven by the blower to induce vibrations in the material along a plurality of different directions. Alternate versions include a canister of material removably located in the hopper, and a container that replaces the hopper and is removably secured to the apparatus.
Claims17
Dusting apparatus, comprising:
- a hopper of powdered material having an exit opening;
- a housing including an inlet port, an outlet and a chamber in communication with both said port and said outlet, the exit opening of said hopper being received in communication with said inlet port;
- a rotary blower in said chamber;
- and
- a valving element freely supported in said inlet port having convex portions facing into the hopper exit opening and concave portions facing oppositely;
- driving means intermittently contacting said concave portion of said element and interconnecting said rotary blower and said valving element for vibrating said element in two directions at substantially ninety degrees to one another on rotation of said blower.
3 more elements
Dependencies are inferred from the claim text.