Pressure and depth control in agricultural implement
US5234060A · kind A · utility
128Cited by
9References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 21, 1992 |
| Grant date | Aug 10, 1993 |
| Priority date | — |
| Expiry date | Feb 21, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01B63/22
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A soil contacting implement and depth gauging wheel at a predetermined vertical distance from the implement are provided for attachment to a tractor. Upward or downward movement of the wheel on the soil causes a deviation from the predetermined vertical displacement thereby triggering an adjustment to the downward force on the implement so as to reestablish the predetermined displacement. The magnitude of the predetermined displacement manually may be altered. In addition, the downward force of the wheel manually is adjustable without altering the magnitude of the predetermined displacement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.