Method for filling and emptying a liquid tank of a spreader device for winter service vehicles, and spreader device
US10577766B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 6, 2012 |
| Grant date | Mar 3, 2020 |
| Priority date | — |
| Expiry date | Feb 27, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0318
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In a spreader for winter service vehicles, brine is filled from a tank sack into additional tanks by purely hydrostatic effect substantially without the use of pumps, by the tank sack being so filled for example by excess pressure that the brine is urged through a liquid line where it forms a closed liquid column. The exit end of the liquid line lies below the entrance end of the liquid line so that, upon filling, the liquid from the tank sack automatically flows into the additional tanks due to hydrostatic forces. Upon emptying the liquid tank, the liquid also flows in a corresponding manner from the tank sack into the additional tanks, thereby completely emptying the tank sack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.