Fluid dispensing system and method for concrete mixer
US8911138B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2011 |
| Grant date | Dec 16, 2014 |
| Priority date | — |
| Expiry date | Oct 16, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28C5/4231
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
System and method for dispensing liquids into concrete mixer drums, particularly suitable for use on concrete mix trucks, involve use of liquid admixtures nozzle that is separate from water conduit and water nozzle, the admixtures nozzle being aimed and focused to spray through drum opening with dispersion pattern substantially within air/concrete interface defined by minimal volume concrete contained within the drum; and the water conduit or nozzle having a dispersion pattern preferably whereby wash water hits a portion of the inner drum wall and a portion of the air/concrete interface defined by a maximum amount of concrete contained within the drum. In preferred embodiments, a check valve assembly is used to connect separate admixture and water lines, so that both admixture and water nozzles can be used simultaneously during purging operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.