Planter monitor system
US4710757A · kind A · utility
34Cited by
13References
12Claims
0Family size
Inventor
Key dates
| Filing date | Feb 14, 1984 |
| Grant date | Dec 1, 1987 |
| Priority date | — |
| Expiry date | Feb 14, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S111/903
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This invention monitors the presence of or a flow of discrete small particles having a high dielectric constant, particularly seeds being planted by a seed planting machine. The invention uses the high dielectric constant of the particles, such as seeds, passing at least a pair of spaced electrodes to vary the capacitance between them and thereby indicate presence of the seed. The capacitance variation is detected and then processed by console located display, alarm and/or counting circuitry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.