Leaf vacuum/chopper

• US 5,791,568 A
• Filed: 03/10/1997
• Issued: 08/11/1998
• Est. Priority Date: 03/12/1996
• Status: Expired due to Fees

• Current Assignee: adlus GmbH
• Original Assignee: adlus GmbH
• Inventors: Keim, Norbert
• Primary Examiner(s): Husar, John M.
• Application Number:
  US08/815,999
• Time in Patent Office: 519 Days
• Field of Search: 241/47, 241/55, 241/56, 241/101.78, 241/291, 15/339, 15/344, 15/405
• US Class Current: 241/47
• CPC Class Codes: A01G 20/47 Vacuum or blower devices
• CPC Class Codes: A47L 5/14 cleaning by blowing-off, also combined with suction cleaning

Abstract

An apparatus for vacuuming up and chopping material such as leaves has a housing having a main chamber centered on an axis, an inlet port opening axially into the chamber, and an outlet port opening tangentially of the chamber. A rotor disk in the chamber centered on the axis has a hub at the axis and having an axially directed face provided with a predetermined number of radially and axially extending and angularly spaced vanes having outer edges. At least two and at most half of the vanes are provided on their outer edges with axially outwardly projecting chopper blades. A motor in the housing connected to the rotor disk at the hub rotates the disk about the axis and thereby draws the material in through the inlet, coarsely chops the material with the blades, and expels the coarsely chopped material with the vanes through the outlet port.

Claims

1. An apparatus for vacuuming up and chopping material such as leaves, the apparatus comprising:

a housing having a main chamber centered on an axis, an inlet port opening axially into the chamber, and an outlet port opening tangentially of the chamber;

a rotor disk in the chamber centered on the axis, having a hub at the axis, and having an axially directed face provided with a predetermined number of radially and axially extending and angularly spaced vanes having outer edges, at least two and at most half of the vanes being provided on their outer edges with axially outwardly projecting chopper blades having straight outer edges meeting at a point at the axis; and

means including a motor in the housing connected to the rotor disk at the hub for rotating the disk about the axis and thereby drawing the material in through the inlet, coarsely chopping the material with the blades, and expelling the coarsely chopped material with the vanes through the outlet port.

2. The vacuuming/chopping apparatus defined in claim 1 wherein the blades are formed as axial extensions of the respective vanes.

3. The vacuuming/chopping apparatus defined in claim 2 wherein the blades are unitary with the respective vanes.

4. The vacuuming/chopping apparatus defined in claim 1, further comprising

clips releasably securing the blades to the respective vanes.

5. The vacuuming/chopping apparatus defined in claim 1 wherein the vanes have a predetermined radial dimension and the blades have a radial dimension equal to up to two-thirds of the radial dimension of the respective vanes.