Foamer dispenser, and container with foamer dispenser

Patent metadata

Field	Value
Publication number	US-10144026-B2
Application number	US-201414904798-A
Country	US
Kind code	B2
Filing date	Jul 17, 2014
Priority date	Jul 17, 2013
Publication date	Dec 4, 2018
Grant date	Dec 4, 2018

Abstract

A foamer dispenser including a mesh filter that is disposed in a mixture flow path of a jet ring to allow a mixture to pass is provided. A connecting flow path area between a liquid flow path and the mixture flow path and a connecting flow path area between an ambient air flow path and the mixture flow path have the relation 2.8≤S 1 /S 2 ≤3.8, and/or, a smallest flow path area of the mixture flow path is located on an immediately upstream side of the mesh filter, and the smallest flow path area and a flow path area of the mesh filter have the relation 4≤S 4 /S 3 ≤10.3.

First claim

The invention claimed is:

1. A foamer dispenser, comprising:
a pump cover that is fitted to a container body; a pump cylinder that includes a large-diameter portion fixed to the pump cover and a small-diameter portion; a small-diameter piston that is received in the small-diameter portion of the pump cylinder and that is configured to suck and pump a liquid in the container body; a large-diameter piston that is received in the large-diameter portion of the pump cylinder and that is configured to suck and pump ambient air; a head that causes pumping movement of the small-diameter piston and the large-diameter piston and that ejects a mixture of the liquid and the ambient air by a user pushing and releasing the head repeatedly; a liquid flow path of the liquid pumped from the small-diameter piston; an ambient air flow path of the ambient air pumped from the large-diameter piston; a mixture flow path of the mixture of the liquid pumped from the liquid flow path and the ambient air pumped from the ambient air flow path; a check valve that is located in the liquid flow path on a downstream side of the small-diameter piston; and a mesh filter that is disposed in the mixture flow path to allow the mixture to pass, wherein
a connecting flow path area S 1 between the liquid flow path and the mixture flow path and a connecting flow path area S 2 between the ambient air flow path and the mixture flow path have the following constant relationship:
2.8≤ S 1 / S 2 ≤3.8, and

the connecting flow path area between the liquid flow path and the mixture flow path is downstream of the check valve.

2. The foamer dispenser of claim 1 , wherein
the connecting flow path area S 1 and the connecting flow path area S 2 have the following relation:
S 1 / S 2 =3.8.

3. The foamer dispenser of claim 1 , wherein
a smallest flow path area S 3 of the mixture flow path is located on an immediately upstream side of the mesh filter, and the smallest flow path area S 3 and a flow path area S 4 of the mesh filter have the following relation:
4 S 4 / S 3 ≤10.3.

4. The foamer dispenser of claim 3 , wherein
the smallest flow path area S 3 and the flow path area S 4 of the mesh filter have the following relation:
4 S 4 / S 3 ≤10.1.

5. The foamer dispenser of claim 4 , wherein
the smallest flow path area S 3 and the flow path area S 4 of the mesh filter have the following relation:
4 S 4 / S 3 ≤6.2.

6. The foamer dispenser of claim 5 , wherein
the smallest flow path area S 3 and the flow path area S 4 of the mesh filter have the following relation:
S 4 / S 3 =4.

7. The foamer dispenser of claim 3 , wherein
the mesh filter is arranged in 2 locations in the mixture flow path, and an interval L 1 between the smallest flow path area S 3 and the flow path area S 4 of the mesh filter and an interval L 2 between the mesh filters have the following relation:
L 2 / L 1 =3.9.

8. The foamer dispenser of claim 1 , further comprising:
a piston guide, inside of which the liquid flow path of the liquid pumped from the small-diameter piston is formed, and which extends throughout the large-diameter piston in a manner such that relative movement is permitted; and a jet ring, which includes a lower-end side portion in which an upper end side of the piston guide is received, an upper-end side portion in which the mesh filter is received, and a through path provided in a separation wall separating the lower-end side portion from the upper-end side portion, wherein the upper end side of the jet ring is connected to the head.

9. A container, comprising:
the foamer dispenser of claim 1 , and the container body to which the foamer dispenser is fitted.

10. The foamer dispenser of claim 1 , wherein a slip-off preventing member that restricts movement of a valving element of the check valve provides an opening configured to communicate the liquid flow path and the mixture flow path with each other.

Assignees

• Mizushima Hiroshi
• Sasaki Tsuyoshi
• Yoshino Kogyosho Co Ltd

Inventors

• Mizushima Hiroshi
• Sasaki Tsuyoshi

Classifications

• B05B7/0037 Primary

  including sieves, porous members or the like · CPC title

• B05B11/0075

  Two outlet valves being placed in a delivery conduit, one downstream the other · CPC title

• B05B11/0064

  Lift valves (B05B11/007 takes precedence) · CPC title

• B05B11/0044

  compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means (venting means for deformable containers B05B11/047) · CPC title

• B05B11/1087 Primary

  Combination of liquid and air pumps · CPC title