Mulching unit for use in mulching apparatus
US6484811B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 14, 2000 |
| Grant date | Nov 26, 2002 |
| Priority date | — |
| Expiry date | Feb 14, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01B33/103
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A mulching unit for a mulching apparatus includes at least one cutting assembly or hammer having a rotatable support element and two cutting elements spaced apart from one another by a predetermined gap that allows debris to pass between the cutting elements, thereby increasing efficiency and enabling higher rotating speeds for sustained amounts of time. The cutting elements include tips that may be formed in one piece with the support element, e.g., a collar, and the tips may be covered with a protective layer of tungsten and/or carbide. Alternatively, the tips themselves can be made from tungsten and/or carbide and physically attached, e.g., by welding, to the collar to form an integral unit. The cutting elements may be mounted on support element halves that can independently rotate on a support rod of the mulching unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.