Motor grader with high-lift and lock arrangement
US4852659A · kind A · utility
6Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 18, 1987 |
| Grant date | Aug 1, 1989 |
| Priority date | — |
| Expiry date | Feb 18, 2007 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F3/7654
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A blade lift and support system for a road grader is taught which is of simplified construction and improved geometry. According to one embodiment, the adjustment of the beam and associated grader blade is fully hydraulically controlled including locking of the beam in a desired position and maintaining the beam position by an hydraulic fluid lock. This preferred arrangement permits full power adjustment of the high-lift while the blade is in a lifted condition. The particular beam shape improves the position of the cylinders to effect positioning the blade for working.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.