Additive injection device for paving machines
US6071040A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1998 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | Oct 1, 2018 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C19/1077
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A device for applying a mat of aggregate material having an entrained liquid additive as the device is moved along a path. The device includes a hopper for receiving the aggregate material, a spreader for spreading the aggregate material generally transversely relative to the path, a compacting screed for compacting the aggregate material into the mat, and a mixing conveyor arranged to convey the aggregate material from the hopper to the spreader and to mix the aggregate material along the length of the conveyor. A conduit in flow communication with an additive supply source is mounted within and spans a portion of the hopper. The conduit thus communicates the liquid additive from the additive source to the aggregate material as the aggregate material is being mixed and conveyed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.