Extendable frame work vehicle
US8602153B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2007 |
| Grant date | Dec 10, 2013 |
| Priority date | — |
| Expiry date | Jul 26, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F9/2253
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An extendable frame work vehicle offering enhanced versatility, safety and effectiveness. The vehicle includes an adjustable frame with front and rear portions that extend or retract with respect to each other. The front portion is supported by a first pair of wheels and said rear portion is supported by a second pair of wheels. Each wheel is independently driven and steered. The vehicle also includes an engine mounted on the rear portion of the frame. Incorporated into the vehicle is an electro-hydraulic assembly which enables extension and retraction of the adjustable frame. The assembly includes a sensor-responsive microprocessor controller, at least one hydraulic pump, at least one hydraulic drive motor, and at least one valve network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.