Articulating grader having structure for raising and lowering mold board without disturbing setting
US4175625A · kind A · utility
Inventor
Key dates
| Filing date | Jun 23, 1977 |
| Grant date | Nov 27, 1979 |
| Priority date | — |
| Expiry date | Jun 23, 1997 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F3/765
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An articulating grader comprises a rear driver section which has an engine and hydraulic pump arrangement for driving a pair of wheels on each side. A chassis frame includes lower frame members for supporting a mold board assembly which is controlled and set in angularity and vertical movement but supported from a frame support member on the top by a hydraulic piston and cylinder and guide member arrangement, whereby after adjustment the mold board may be moved upwardly vertically and again moved back down to original position without disturbing the setting. A front articulating frame supports steerable wheels controlled by hydraulic power steering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.