Tractor with three-point linkage connecting scraper thereto and automatic tilt control
US4535847A · kind A · utility
24Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 1983 |
| Grant date | Aug 20, 1985 |
| Priority date | — |
| Expiry date | May 2, 2003 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F3/7622
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A seated-operator type tractor has a vehicle proper (1), equipped rearwardly thereof with a link mechanism (6) and a scraper (9) for ground-leveling. The vehicle (1) is further provided with: a position-controlling mechanism (34) for controlling up-and-down position of the scraper (9); an automatic control mechanism for maintaining the scraper (9) in its left-and-right horizontal posture, by a sensor (50) therefor; a controlling valve (24) for controlling blade-angle adjustment of the scraper (9); and a manual switch (47) disposed near at hand of the seated operator, for shifting over the vehicle (24).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.