Combination leaf and lawn debris blower, comminuting vacuum, and wood chipper
First Claim
1. An apparatus for comminuting lawn debris comprising:
- a housing including a first inlet opening for introducing material into the housing and a discharge opening for discharging material from the housing;
a drive shaft extending into the housing;
an impeller within the housing rotatably mounted on the drive shaft;
a shredder located between one side of the impeller and the first inlet opening for shredding material passing into the housing through the first inlet opening and for reducing the size of the material; and
a stator disposed radially outwardly from the impeller, the stator including serrated teeth so that material passing radially outwardly from the impeller strikes upon the serrated teeth further reducing the material.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus for comminuting lawn debris comprises an impeller housing defined by a pair of opposed axial end walls and a substantially voluted peripheral wall therebetween and includes inlet openings located on opposite end walls for introducing material into the housing and a discharge opening located on the peripheral wall for discharging material from the housing. The impeller is rotatably mounted on a drive shaft within the housing. The impeller includes a backing plate and a plurality of radially extending blades fixed to one face of the backing plate. The impeller blades cause air to be drawn in from an inlet opening and to be propelled axially into the housing and through the discharge opening. The comminuting blades shred material within the housing thereby reducing the size of the material. A chipper knife is attached to the face of the impeller opposite the blades for chipping material passing into the housing through one of the inlet openings. An aperture permits material chipped with the knife to pass to the opposite side of the impeller. A stator is attached to the inner face of the annular wall and includes serrated teeth. The impeller causes material to be propelled from the chipper knife and comminuting blades and strike the serrated teeth of the stator and be propelled toward the discharge opening.
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Citations
23 Claims
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1. An apparatus for comminuting lawn debris comprising:
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a housing including a first inlet opening for introducing material into the housing and a discharge opening for discharging material from the housing; a drive shaft extending into the housing; an impeller within the housing rotatably mounted on the drive shaft; a shredder located between one side of the impeller and the first inlet opening for shredding material passing into the housing through the first inlet opening and for reducing the size of the material; and a stator disposed radially outwardly from the impeller, the stator including serrated teeth so that material passing radially outwardly from the impeller strikes upon the serrated teeth further reducing the material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An apparatus for comminuting lawn debris comprising:
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an impeller housing defined by a pair of opposed axial end wails and a substantially voluted peripheral wall therebetween, the housing including a first inlet opening located on one of the end walls for introducing material into the housing, a second inlet opening located on the opposite end wall for introducing material into the housing, and a discharge opening located on the peripheral wall for discharging material from the housing; a drive shaft extending into the peripheral housing; a drive means coupled with the drive shaft for rotatably driving the drive shaft; an impeller within the housing rotatably mounted on the drive shaft, the impeller including a backing plate having an aperture therein and a plurality of radially extending comminuting blades fixed to one face of the backing plate, the impeller blades causing air to be drawn in from the first inlet opening and propelled axially into the housing and through the discharge opening, the backing plate forming a containment surface for limiting the movement of material in one direction along the drive shaft, the comminuting blades extending into the housing for shredding material within the housing between the backing plate and the one axial end wall thereby reducing the size of the material; a chipper knife attached to the other face of the impeller and adjacent the aperture for chipping material passing into the housing through the second inlet opening, the aperture permitting material chipped with the knife to pass to the opposite side of the impeller; and a stator attached to the inner face of the peripheral wall, the stator including serrated teeth, the impeller causing material to be propelled from the chipper knife and comminuting blades and strike the serrated teeth of the stator and be propelled toward the discharge opening. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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Specification