Dispensing tube assembly and foam generator for coaxial tubes
US8286836B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 14, 2008 |
| Grant date | Oct 16, 2012 |
| Priority date | — |
| Expiry date | Oct 6, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/1087
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A dispensing tube assembly includes a first component delivery tube surrounded by a second component delivery tube. The first component delivery tube provides an axial passage, and an annular passage is defined between the first component delivery tube and the second component delivery tube. A component travelling through the axial passage is diverted to enter the surrounding annular passage and mix with a second component traveling in that annular passage. The premixture formed by this mixture of components is then diverted from the annular passage into a post mix chamber and ultimately dispensed as a foam. A foam media may be employed to homogenous the premixture and create a high quality foam. The dispensing tube assembly is advantageously employed in a dispenser wherein soap and air are advanced through coaxial tubes to be mixed and create a foamed soap product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.