Oscillating airstream nozzle for debris blower
First Claim
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1. A debris blower comprising:
- a housing defining an air exit opening;
a motor-driven impeller adapted to accelerate air and expel the air through the air exit opening;
a blower tube having a first end and a second end, the first end adapted to attach to the housing at the air exit opening; and
a nozzle adapted to attach to the second end of the blower tube, the nozzle comprising first and second mating halves secured to one another, wherein the assembled first and second mating halves form;
a first end defining an air inlet of complementary shape to the second end of the blower tube; and
a second end defining a primary air outlet and a secondary air outlet proximate the primary air outlet, the nozzle adapted to produce an airstream at the primary air outlet that oscillates back-and-forth along an axis of the primary air outlet, wherein movement of the air through fixed passageways of the nozzle alone produces the oscillating airstream.
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Abstract
A debris blower incorporating a nozzle (e.g., removably attachable nozzle) formed from first and second mating halves, wherein the nozzle provides an airstream that oscillates as a result of dynamic fluid effects of airflow passing through the nozzle. As a result, an oscillating airstream may be produced without the use of complicated moving airflow control elements such as louvers and vanes, and without requiring manual manipulation of the blower by the operator.
43 Citations
21 Claims
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1. A debris blower comprising:
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a housing defining an air exit opening; a motor-driven impeller adapted to accelerate air and expel the air through the air exit opening; a blower tube having a first end and a second end, the first end adapted to attach to the housing at the air exit opening; and a nozzle adapted to attach to the second end of the blower tube, the nozzle comprising first and second mating halves secured to one another, wherein the assembled first and second mating halves form;
a first end defining an air inlet of complementary shape to the second end of the blower tube; and
a second end defining a primary air outlet and a secondary air outlet proximate the primary air outlet, the nozzle adapted to produce an airstream at the primary air outlet that oscillates back-and-forth along an axis of the primary air outlet, wherein movement of the air through fixed passageways of the nozzle alone produces the oscillating airstream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A nozzle adapted to removably attach to an outlet of a debris blower, the nozzle comprising first and second mating halves secured to one another, wherein the assembled first and second mating halves together form:
- a first end defining an air inlet; and
a second end defining a primary air outlet and a secondary air outlet proximate the primary air outlet, the nozzle adapted to produce an airstream at the primary air outlet that oscillates back-and-forth along an axis of the primary air outlet, wherein movement of air through fixed passageways of the nozzle alone produces the oscillating airstream. - View Dependent Claims (12, 13, 14, 15)
- a first end defining an air inlet; and
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16. A nozzle adapted to removably attach to a distal end of a blower tube extending outwardly from a debris blower, wherein the nozzle comprises:
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first and second mating halves secured to one another, wherein the assembled first and second mating halves together form;
a first end defining an air inlet; and
a second end defining a rectangular air outlet, the nozzle adapted to produce an airstream at the air outlet that oscillates back-and-forth along a long axis of the air outlet, wherein movement of air through fixed passageways of the nozzle alone produces the oscillating airstream, and wherein the first and second mating halves further define a secondary air outlet at the second end proximate the rectangular air outlet; andwherein the first mating half comprises a latching tab adapted to selectively engage a protrusion formed on an exterior surface of the blower tube when the distal end of the blower tube is partially received within the air inlet of the nozzle. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification