Reversible control level linkage
US5052512A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 1990 |
| Grant date | Oct 1, 1991 |
| Priority date | — |
| Expiry date | Aug 14, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D1/22
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A reversible actuation linkage associated with a control lever determining the speed and direction of travel of a hydrostatically driven tractor in which the control is mounted with an operator's station pivotally supported to permit orientation of the operator in a selected one of opposing directions is disclosed wherein the linkage includes a cable actuator pivotally connected to a fixed linkage mechanism. The actuator cable includes a clevis mounted for pivotable movement about a vertical pivot axis coinciding with the axis about which the operator's station is rotatably movable. As a result, the actuator cable reversibly effects operation of the hydraulic system to effect movement of the tractor in the direction corresponding to the direction of movement of the control lever irrespective of the rotated position selected for the operator's station.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.