Patent ID: 9566595
Date: 2017-02-14
CPC Classifications: B05B

Claim:
1. A foam-forming assembly, comprising: a housing having an air passage and a liquid passage, each ending in a mouth and being in communication with a dispensing passage having a dispensing opening, and a valve body having a rest position, in which the valve body covers the mouth of the liquid passage and the mouth of the air passage in a sealing manner, in order to prevent a flow from the liquid passage and the air passage to the dispensing passage, the valve body further having a dispensing position, in which the valve body opens the mouth of the liquid passage and the mouth of the air passage in order to allow mixing of air and liquid to take place in the dispensing passage, wherein the mouth of the air passage is substantially annular, and wherein the air passage comprises a pressure balance chamber to divide the air pressure substantially equally over the substantially annular mouth, and wherein the mouth of the air passage and the pressure balance chamber are in communication with each other via multiple holes in a wall between the substantially annular mouth and the pressure balance chamber, wherein the multiple holes are substantially equally divided over the circumference of the mouth of the air passage.