Leaf vacuum/chopper
US5791568A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 10, 1997 |
| Grant date | Aug 11, 1998 |
| Priority date | — |
| Expiry date | Mar 10, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01G20/47
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.