Bellows foam dispenser
US8616414B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 9, 2009 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Feb 26, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/1015
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A foam dispenser is formed by modifying a standard reciprocating piston liquid pump having a reciprocating piston that is pressed to dispense liquid at an outlet. A holding chamber membrane surrounds the reciprocating piston and the outlet to define a holding chamber such that liquid dispensed at the outlet gathers at the bottom of the holding chamber. Pressing on the holding chamber membrane actuates the reciprocating piston liquid pump to dispense liquid into the holding chamber and also forces air and a portion of the liquid gathered in the holding chamber into an through a dispensing spout communicating with the holding chamber. The air and liquid are mixed at a foam media to create a foam product dispensed at an outlet of the dispensing spout.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.