Steering and ground speed control mechanism of a dual-path hydrostatic drive arrangement
US8678113B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 25, 2011 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | May 9, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D11/006
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A dual-path hydrostatic drive arrangement for driving ground wheels at the opposite sides of the front of a self-propelled windrower is controlled for effecting steering and ground speed changes by a control mechanism including a gear train defined by a steering input gear and idler gear and steering output gears carried by a gear support member mounted for pivoting about a fixed axis of rotation of the input gear. The output gear is coupled for transmitting movement to first and second pump displacement control rods and steering is effected by turning a steering wheel which is coupled for rotating the input gear so as to impart rotation to the output gear which rotates so as to cause the control rods to move different amounts or in different directions. Speed changes are effected by a speed control device that is coupled for selectively swinging the speed/direction control arm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.