Paving machine with mixing device and discharge conveyor assembly for remixing segregated paving materials
US5533829A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 2, 1995 |
| Grant date | Jul 9, 1996 |
| Priority date | — |
| Expiry date | May 2, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C2301/30
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A paving machine is described which includes: a gravity feed hopper located near a front end of a chassis; a distributing auger mounted on the chassis near the rear end thereof and extending transversely across the chassis; a remixing device including a variable-pitch screw auger with i) a first flight section and ii) a second flight section, the second flight section being located transversely between a lower discharge opening of the hopper and the first flight section, the pitch of the first flight section being lower than the pitch of the second flight section so that volumes bounded by flights of the second flight section are greater than volumes bounded by flights of the first flight section, so as to enable finer paving materials, located in a transverse central portion of the hopper to enter void spaces in volumes bounded by flights of the second flight section and combine with coarser paving material, thereby remixing segregated paving materials; and a discharge conveyor assembly extending longitudinally and horizontally from the lower discharge opening to the distributing auger, the discharge conveyor assembly including a pair of parallel drag slat conveyors, each of the p…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.