Offset/tandom disc-type tillage implement
US5881820A · kind A · utility
Inventor
Key dates
| Filing date | Feb 21, 1997 |
| Grant date | Mar 16, 1999 |
| Priority date | — |
| Expiry date | Feb 21, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01B21/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An improved disc-type ground tillage implement for tilling ground. The implement has a frame connectable to a towing machine and having multiple pairs of gangs of blades connected to the frame. The frame is supported by a plurality of wheels which may be used to raise and lower the implement in relation to the ground. Each of the pairs of blade gangs includes a front and a rear gang, there being a pair of outer right blade gangs, at least one pair of center blade gangs and a pair of outer left blade gangs. The front and the rear gangs of the outer right and the outer left gang pairs converge as they extend out away from the left-right center of the frame and the outer left and outer right gangs are non-continuous with a center gang pair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.