Device for metering granular material
US4029028A · kind A · utility
7Cited by
4References
16Claims
0Family size
Inventor
Key dates
| Filing date | Apr 19, 1976 |
| Grant date | Jun 14, 1977 |
| Priority date | — |
| Expiry date | Apr 19, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01C7/16
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A metering device is described which provides for very accurate metering of granular material such as seeds or fertilizer. The device incorporates two main components: a solid casing having a slot with an open side and decreasing cross-section, and a corresponding rotor which frictionally urges material along the slot. The rotor has a resilient surface and can be in the shape of a disc or of a roller to correspond with the shape of the casing. The device allows significant savings in the spreading of granular material over conventional devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.