Hand held seed dispenser
US5664506A · kind A · utility
Inventor
Key dates
| Filing date | Mar 18, 1996 |
| Grant date | Sep 9, 1997 |
| Priority date | — |
| Expiry date | Mar 18, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01C7/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A seed dispenser is composed of a motor-spatula assembly and a handle. A switch, an adjustable resistor and a battery are enclosed in a hollow of the handle. The motor-spatula assembly includes a V-shaped spatula and an electrical motor elastically mounted to a proximal end of the V-shaped spatula, and the motor is connected via the switch and resistor to the battery. The motor rotor is eccentric so that the rotational center of gravity of the rotor is not exactly co-axial with the axis of the rotor drive shaft, to cause when running a vibration of the motor-spatula assembly at a dominant vibration frequency that is directly proportional to the speed of the rotor. Speed of the motor is adjustable by varying the resistor. The motor-spatula assembly mounted to the handle through a resilient elastomeric gasket, so that a substantial part of the motor vibration energy is transmitted to the spatula and not to the handle. For more effective singulation and enhanced regularity in the dispensing of very small seeds, a series of dremples is formed in the spatula protruding inward toward the trough of the spatula. For large seeds, eccentricity of the rotor may be increased by providing eccen…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.