Foam-forming assembly and squeeze foamer
First 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, anda 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, andwherein 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.
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Accused Products
Abstract
A foam-forming assembly includes 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 which, in a rest position, 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. During dispensing, 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. The mouth of the air passage is substantially annular, and the air passage includes a pressure balance chamber to divide the air pressure substantially equally over the substantially annular mouth.
10 Citations
17 Claims
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1. A foam-forming assembly, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A foam-forming assembly, comprising:
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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 is annular and arranged on a first circle, and wherein the mouth of the liquid passage and inlet openings of the dispensing passage are arranged on a second circle, wherein the first circle and the second circle are arranged concentrically and adjacent to each other.
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16. A foam-forming assembly, comprising:
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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 liquid passage comprises multiple outlet openings arranged in a circle, wherein the multiple outlet openings are covered by the valve body in the rest position, wherein the valve body comprises at least at the location of the multiple outlet openings a substantially tube-shaped part, and wherein, in the at rest position, an inner surface of the tube shaped part covers the multiple outlet openings. - View Dependent Claims (17)
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Specification