Liquid fertilizer injection system
US5590611A · kind A · utility
Inventor
Key dates
| Filing date | Mar 1, 1995 |
| Grant date | Jan 7, 1997 |
| Priority date | — |
| Expiry date | Mar 1, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01C23/028
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A liquid fertilizer injection system is provided that includes a single coulter blade mounted on a support arm extending from a bracket which is adapted to be pivotally coupled to an attachment apparatus which attaches the system to a propulsion means. A spray arm is adapted at one end is attached to the support arm and is adjustable in the up and down direction by means of a slot bracket. A second end of the spray arm is attached to a spray nozzle which is adapted to receive a flexible tube. The flexible tube transfers, to the nozzle, liquid fertilizer, under pressure, from a liquid reservoir via a pump. The system further includes a tension spring assembly which provides a down-force, determined by the user, to the coulter assembly, while isolating the system from the propulsion means, thereby preventing lifting of a planter or seeder to which the system is connected off of the ground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.