Down-pressure system for agricultural implement
US5687798A · kind A · utility
31Cited by
15References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1995 |
| Grant date | Nov 18, 1997 |
| Priority date | — |
| Expiry date | Nov 29, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01C7/205
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The implement has a folding tool-bar, with a main section and wings. Hydraulic rams press the wings downwards relative to the main section during operation. Another ram presses the main-section downwards, reacting the force against a relatively weighty component, such as a air-cart. During non-operation, a carriage wheel is lowered, which raises the main section of the tool-bar off the ground. The wings also are raised clear of the ground. A sensor detects the position of the carriage wheel, and blocks movement of the wings downwards when the carriage wheel is lowered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.