Foaming device
US5219102A · kind A · utility
21Cited by
14References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 16, 1992 |
| Grant date | Jun 15, 1993 |
| Priority date | — |
| Expiry date | Apr 16, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B7/0037
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A foam dispensing device mixes a foamable liquid with ambient air and dispenses a foam having a relatively constant ratio of liquid to air even during rapidly repeated foam dispension. The device contains a passage for foam return from a foam conduit to a liquid reservoir having one-way valve means to permit flow only in the direction from the foam conduit to the liquid reservoir during operation of the foamer, and a means of separating the inlet to the air passage from the outlet of the foam return passage to prevent flow of foam through the air passage during rapid, repeated foam dispension.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.