Rotary rakes
US4800713A · kind A · utility
1Cited by
20References
4Claims
0Family size
Inventor
Key dates
| Filing date | Jan 28, 1987 |
| Grant date | Jan 31, 1989 |
| Priority date | — |
| Expiry date | Jan 28, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D80/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A rotary rake in which each of the pin wheels (i.e. disk wheels) being arranged in echelon manner, has rearwardly inclined gaps between respective fingers whereby to promote removal of debris that otherwise will jam between the fingers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.