Windrower autoguidance hydraulic steering interface
US9101090B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 2013 |
| Grant date | Aug 11, 2015 |
| Priority date | — |
| Expiry date | Feb 8, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D11/005
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An autoguidance interface for a hydraulic steering system for a differential steered self-propelled agricultural windrower, windrower speed and direction controlled by adjustment to a control input shaft to control the output of a pair of tandem-mounted hydraulic drive pumps and provide motive power for the windrower. The control input shaft is rotatable and axially moveable. A hydraulic steering motor is operably connected to the input shaft to effect control input shaft rotation. Rotation of the hydraulic steering motor is selectively managed by a steering control valve attached to a cab-mounted windrower steering wheel or a proportional steering valve managed by the autoguidance system. A selector valve controls the active steering input. An emergency disengagement positions the selector valve to restore manual control by the steering wheel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.