Axial compression powder dispenser
OwnerEdward J. Martin, Joseph M. Minkevitchinventors
Life of this patent
Estimating the term…
Abstract
A dispenser for dry powders, and in particular for fire extinguishing powders, formed as a container having a handle/nozzle section to be gripped by one hand, a hand gripping section to be gripped by the other hand, and a central bellows section for alternate axial compression and expansion to pump the powder from the container and thereby to discharge it in repeated cloud-like bursts. By regulating the quantity of powder in the dispenser and the powder dispensing opening it is possible to repeatedly discharge fire extinguishing effective amounts of a fire extinguishing powder. In one preferred embodiment the handle/nozzle section is configured as an elongated conical member.
Claims27
A hand-held and hand-operable powder dispenser, comprising in combination
- a. a container having a noncollapsible handle/nozzle section termination at its discharge end in an unobstructed powder dispensing opening of relatively large diameter sized to pass a cloud of dry powder therethrough and at its other end in a cylindrical band member, said handle/section having an internal configuration which permits the free flow of a powder therethrough;
- b. a hand gripping section;
- c. a central, thin-walled, flexible bellows section joining, through said cylindrical band member, said handle/nozzle section and said hand gripping section, said bellows section having a diameter essentially equal to said band member and being adapted to be collapsed and expanded axially to serve as a pump, the pleats forming said bellows section being joined to form relatively sharp edges;
- and
- d. readily removable closure/sealing means engageable with said powder dispensing opening;
- said handle/nozzle section fitting one hand of an operator while said operator graps said hand gripping section with the other hand to axially pump said central bellows section for dispensing dry powder contained therein in repeated cloud-like bursts.
A hand-held and hand-operable fire extinguisher, comprising in combination
- a. a container having a noncollapsible handle/nozzle section sized to fit one hand of an operator and terminating at its discharge end in an unobstructed powder dispensing opening of relatively large diameter and at its other end in a cylindrical band member;
- b. a hand gripping section sized to fit the other hand of said operator;
- c. a central, thin-walled, flexible bellows section joining, through said cylindrical band member, said handle/nozzle section and said hand gripping section, said bellows section having a diameter essentially equal to said band member and being adapted to be collapsed and expanded axially to serve as a pump, the pleats forming said bellows section being joined to form relatively sharp edges;
- d. a quantity of a fire extinguishing, finely divided powder filling less than the entire volume of said container;
- and
- e. readily removable essentially air-tight closure/sealing means engageable with said powder dispensing opening;
- said quantity of said fire extinguishing powder, the size of said powder dispensing opening and the internal configuration of said handle/nozzle section being such that when said operator removes said closure/sealing means and grasps said handle/nozzle and said hand gripping sections to use said bellows as a pump said powder is repeatedly discharged from said dispenser in fire extinguishing effective cloud-like bursts.
A hand-held fire extinguisher comprising, in combination
- a. a one-piece plastic container having an upper, truncated-conical handle portion terminating at its discharge end in a cylindrical neck with a dispensing opening having a relatively large diameter, adapted to pass a cloud of fire extinguishing dry powder and at its other end in a cylindrical band member;
- b. a central, thin-walled, flexible, deformable bellows portion having a diameter essentially equal to said band member and being adapted to collapse and expand axially to serve as a pump, the pleats forming said bellows portion being jointed to form relatively sharp edges;
- c. a lower handle portion having a deep, wide, annular finger groove extending therearound;
- d. closure means fitting and sealing said dispensing opening;
- and
- e. a charge of dry fire extinguishing powder filling less than the entire volume of said container;
- said upper handle portion fitting one hand of an operator while the operator grips said lower handle portion with the other hand to axially pump said central bellows portion for dispensing said powder in repeated cloud-like bursts.
Dependencies are inferred from the claim text.