Machine with four degrees of freedom implement control joystick and track type tractor using same
US8700271B2 · kind B2 · utility
12Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2012 |
| Grant date | Apr 15, 2014 |
| Priority date | — |
| Expiry date | Jun 1, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05G9/04788
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A track type tractor incorporates control over lift, tilt, angle and pitch into an implement control joystick. The pitch cylinder and the tilt cylinder share segments of the hydraulic circuit, and a diverter valve prioritizes pitch control over tilt control in the rare occurrence when the operator is requesting both tilt and pitch changes to the dozer blade. Angle control and pitch control may be accomplished by finger controllers incorporated into the implement control joystick. Thus, the operator can control the dozer blade in four degrees of freedom without losing contact with the implement control joystick.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.