Method and apparatus for separating aggregate for a concrete topping slab
US11534798B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 27, 2020 |
| Grant date | Dec 27, 2022 |
| Priority date | — |
| Expiry date | Jan 20, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB07B13/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A base supports an inclined screen having a uniform mesh selected to remove larger aggregate from a first cement mixture to form a second cement mixture that passes through the screen. A powered vibrator vibrates the screen to separate the concrete mixtures and larger aggregate. Springs and/or dampers in support legs isolate the vibrating screen from the base. A guide frame on the top surface of the screen guides the first concrete mixture along the screen and guide the separated aggregate out a bottom opening into an aggregate container. A support frame on the bottom surface of the screen stiffens the screen to help support the weight of the concrete. A concrete container, preferably wheeled, is below the screen to collect the second concrete mixture and move it to its use location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.