Apparatus for synchronized spreading of granular and liquid material
US5096125A · kind A · utility
Inventors
Key dates
| Filing date | Oct 3, 1990 |
| Grant date | Mar 17, 1992 |
| Priority date | — |
| Expiry date | Oct 3, 2010 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C2019/208
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A granular and liquid material spreading system mounted on a vehicle. Granular material is moved from a hopper to a delivery means using hydraulic pumps and motors. The hydraulic system also drives a liquid delivery system. A control system is provided to control the amount of granular material and liquid material applied to a surface. The feed rate of liquid delivery is dependent upon the feed rate of the granular material. The liquid feed rate may be changed within a predetermined range. The level of liquid may be sensed to disengage the liquid delivery system. Initiation of liquid delivery reduces the feed rate of granular material by a variably selected percentage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.