Straight bar tillage implement
US5797460A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1996 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Oct 22, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01B49/027
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A tillage implement includes straight bar ripper structure with a main forward toolbar supporting subsoiler shanks from special brackets which can also support coulters ahead of the shanks independently of additional toolbar structure. An optional rear or secondary toolbar is attached by four-bar linkages to the main toolbar. The four-bar linkages allow the operator to adjust the height of the secondary toolbar relative to the main toolbar to accommodate changes in the operating depth of the rippers. The linkages may also be released to allow the secondary toolbar to float relative to the main toolbar. The secondary toolbar accommodates different attachments behind the rippers, such as disk bedders, lister bedders and strip till rigs which can operate at optimum attack angles and penetration regardless of the operating depth of the ripper. The strip till rig includes coulters and a rolling basket supported from the secondary frame by a four bar linkage so the attack angle and the relative operating height of the coulters and rolling basket remain constant as the rig floats throughout the entire vertical range of the rig. The combination of the adjustable secondary toolbar and the f…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.