Pavement grinder and trench opening mill and method
US5388893A · kind A · utility
Inventors
Key dates
| Filing date | Jun 1, 1993 |
| Grant date | Feb 14, 1995 |
| Priority date | — |
| Expiry date | Jun 1, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S37/903
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A pavement trench mill is designed to be attached to the bucket of a front loader or backhoe. The pavement trench mill has a self contained engine to power the mandrel and is raised and lowered by the bucket on which it is mounted. The trench mill has a gauge that controls the depth of the cut. The cutting drum has a double cutting action which is provided by two sets of edge mounted teeth. The first set of edge mounted teeth are at the same radius and angle as the remainder of the mandrel cutting teeth. The second set of edge mounted teeth are spaced slightly wider (longitudinally) and slightly lower (closer to center of mandrel). This row of teeth trims the outer edge of the trench with greater frequency and leaves the edge smoother.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.