Grinding machines for depression patterns along roads
US7325881B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2006 |
| Grant date | Feb 5, 2008 |
| Priority date | — |
| Expiry date | Mar 15, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C23/088
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In certain preferred embodiments, the present invention provides a grinding machine for creating depression patterns in a surface such as asphalt or concrete. The depression pattern may be a rumble strip for alerting drivers who drift off a driving lane, or may be for other uses. Use of a depression pattern (instead of protrusions) eliminates interference with snowplow operation in areas where plows are used. In the present invention, the grinding machine is based on a trolley which moves at a uniform height along a surface, and includes a forward “gauge” wheel which controls the relative grinding drum depth based on the wheel position and rotation. In a preferred embodiment, the grinding assembly is raised and lowered relative to the trolley in correspondence with the advancement of the trolley.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.