Electrohydraulic valve assembly for front end loader attachment to farm tractor
US4050596A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1975 |
| Grant date | Sep 27, 1977 |
| Priority date | — |
| Expiry date | Jul 24, 1995 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F9/2203
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An attachment for converting a farm tractor to a front end loader having front and upwardly extending frame members, a pair of boom arms and an implement. Hydraulic cylinders actuate the boom arms and implement. An electrohydraulic valve assembly is hydraulically coupled to the cylinders and is rigidly secured to the attachment outside of the cab. A switching assembly electrically switches the electrohydraulic valve assembly and is secured within the cab for easy access to the operator of the tractor. An electrical cable is coupled between the switching assembly within the cab and the electrohydraulic valve assembly outside of the cab.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.