Rotary rakes
US4821499A · kind A · utility
0Cited by
19References
3Claims
0Family size
Inventor
Key dates
| Filing date | May 31, 1988 |
| Grant date | Apr 18, 1989 |
| Priority date | — |
| Expiry date | May 31, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D78/146
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A rotary rake in which the angular relationship of pin wheels and swing arm supports relative to a forward direction is such as to cause debris being collected to be caused to roll to one side, thereby increasing debris-collection potential.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.