Lift system for a cotton harvester
US5237802A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1992 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Jan 30, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D46/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A lift system for individually elevating one or more harvesting units of a cotton harvester through a range of movement extending between an operational position and a raised position while maintaining other harvesting units in an operational position relative to the harvester. The lift system includes a source of actuating fluid, a fluid pressure actuator connected to each harvesting unit for elevating a respective harvesting unit, and a control system connected between the source of actuating fluid and each fluid pressure actuator for selectively controlling the elevation of the harvesting units relative to the chassis of the harvester. The control system includes ground sensors for individually maintaining the harvesting units in a preselected elevational position relative to the harvester. The control system further includes a series of electro/hydraulic valves for independently interrupting and effectuating the flow of actuating fluid to the fluid pressure actuators thereby providing independent control over elevation of the harvesting units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.