Milling machine for digging trenches in the earth
US4844549A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 15, 1988 |
| Grant date | Jul 4, 1989 |
| Priority date | — |
| Expiry date | Jul 15, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F3/205
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A milling machine for digging trenches in the earth, of the type comprising at least one substantially vertical support plate on both sides of which two milling drums are mounted for rotation about an axis substantially perpendicular to the plate, each of the drums carrying, on the one of its edges which is adjacent to the support plate, at least one tool which projects laterally with respect to this edge, and the support plate including opposite the trajectory of said tools, circular channels coaxial with the drums, through which the ends of these tools pass when the drums turn. The projecting tools of one of the drums redisposed at a distance from the axis which is different from the distance to the axis from the projecting tools of the other drum, the channels having, correspondingly, different radii.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.