Machine for removing vegetation
US7475528B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jan 27, 2004 |
| Grant date | Jan 13, 2009 |
| Priority date | — |
| Expiry date | Jun 13, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D51/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A lawncare machine 100 has a powered rotary raking or scarifying reel 5 together with a powered vacuum collector 8 whereby material thrown up by the reel is immediately drawn into the collection chamber 8. During removal of the vegetation material, it is drawn into the chamber 8 due to a suction created by a fan 2. The material is normally held in the box by means of a perforated screen 10 situated between the box and fan entry. The chamber 8 may be emptied by moving the screen 10 so that the material is discharged through the fan 2. Alternatively the chamber 8 may be emptied by means of flap valves 19, 21, 23 which cause a reversal of the airflow through the chamber so that the collected material never passes through the fan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.