Device for affixing cutter drums to an apparatus intended for cutting trenches in the ground
US4991322A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1990 |
| Grant date | Feb 12, 1991 |
| Priority date | — |
| Expiry date | Jan 12, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/7098
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to a device for affixing cutter drums on an apparatus designed to cut trenches in the ground. The driver includes a revolving plate 4 disposed perpendicular to its axis and to the end of the latter, the plate having on its periphery a convex polygonal shape 9. A cutter drum 8 is provided with a portion 8a including a central hollow of concave polygonal shape 10 corresponding to the convex polygonal shape 9 of the plate 4 and of slightly greater dimensions. Bolts 11 unite the cutter drum 8 to the said plate 4 such that the rotational driving of the cutter drum 8 by the plate is performed through the medium of the aforesaid polygonal surfaces 9, 10 which come into engagement with one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.