Foamer dispenser

Patent metadata

Field	Value
Publication number	US-9839924-B2
Application number	US-201414898305-A
Country	US
Kind code	B2
Filing date	Jul 16, 2014
Priority date	Jul 17, 2013
Publication date	Dec 12, 2017
Grant date	Dec 12, 2017

Abstract

In a foamer dispenser, a depressing head includes: a head main unit with a top wall portion arranged above the stem and with an attachment cylindrical portion that extends downwardly from the top wall portion and is attached to the stem; and an exterior cylindrical portion that is provided beneath the top wall portion and surrounds the attachment cylindrical portion and the guide cylindrical portion from an outer side in a radial direction. An inside of the exterior cylindrical portion is communicable with an inside of the cylinder for air through an inside of the guide cylindrical portion. The head main unit and the exterior cylindrical portion are formed as separate entities and are fitted to each other. In an upper end portion of the exterior cylindrical portion, intake holes are formed that penetrate through the exterior cylindrical portion in a radial direction and open toward an upward direction.

First claim

The invention claimed is:

1. A foamer dispenser, comprising:
an attachment cap that is attached to a mouth portion of a container main unit in which a content substance is contained;
a discharge device having a stem that is erected through the attachment cap so as to be movable downwardly while being biased upwardly; and
a depressing head which is attached to the stem and in which a nozzle hole is formed, wherein:
the discharge device includes:
a piston for liquid that is linked to the stem;
a cylinder for liquid in which the piston for liquid is contained so as to be freely slidable in an up-down direction;
a piston for air that is linked to the stem;
a cylinder for air in which the piston for air is contained so as to be freely slidable in the up-down direction;
an air-liquid mixing chamber that mixes liquid from the cylinder for liquid with air from the cylinder for air; and
a foaming member that is disposed between the air-liquid mixing chamber and the nozzle hole and foams an air-liquid mixture from the air-liquid mixing chamber;

the attachment cap includes:
an annular ceiling wall portion that is arranged above the mouth portion; and
a guide cylindrical portion that is erected on the ceiling wall portion;

the depressing head includes:
a head main unit having a top wall portion arranged above the stem, and an attachment cylindrical portion that extends downwardly from the top wall portion and is attached to the stem; and
an exterior cylindrical portion that is provided beneath the top wall portion and surrounds the attachment cylindrical portion and the guide cylindrical portion from an outer side in a radial direction;

an inside of the exterior cylindrical portion is communicable with an inside of the cylinder for air through an inside of the guide cylindrical portion;
the head main unit and the exterior cylindrical portion are formed as separate entities and are fitted to each other;
in an upper end portion of the exterior cylindrical portion, an intake hole is formed that penetrates through the exterior cylindrical portion in the radial direction and opens toward an upward direction; and
a receding section is formed in an outer circumferential surface of the exterior cylindrical portion, the receding section receding inwardly in the radial direction to form a thin wall part of the exterior cylindrical portion having a thickness in the radial direction thinner than a thickness in the radial direction of other sections of the exterior cylindrical portion, the receding section being arranged adjacent the intake hole, and being in communication with the intake hole.

2. The foamer dispenser according to claim 1 ,
wherein the head main unit is provided with a covering wall portion that extends downwardly from the top wall portion and covers the intake hole from an outer side in the radial direction.

3. The foamer dispenser according to claim 2 ,
wherein the top wall portion is provided with a pair of lock portions that protrude downwardly, are spaced in a circumferential direction, and are locked between parts of an inner circumferential edge of the intake hole that face inwardly in the circumferential direction.

4. The foamer dispenser according to claim 1 ,
wherein the top wall portion is provided with a pair of lock portions that protrude downwardly, are spaced in a circumferential direction, and are locked between parts of an inner circumferential edge of the intake hole that face inwardly in the circumferential direction.

5. The foamer dispenser according to claim 1 ,
wherein the head main unit further has a fitting cylindrical portion which protrudes downwardly from the top wall portion and surrounds an upper end portion of the attachment cylindrical portion from the outer side in the radial direction, and into which the upper end portion of the exterior cylindrical portion is fitted.

Assignees

• Mizushima Hiroshi
• Sasaki Tsuyoshi
• Yamamoto Yasuhito
• Kato Hiroyuki
• Tashiro Toshihiro
• Yoshino Kogyosho Co Ltd

Inventors

• Mizushima Hiroshi
• Sasaki Tsuyoshi
• Yamamoto Yasuhito
• Kato Hiroyuki
• Tashiro Toshihiro

Classifications

• B05B11/1087

  Combination of liquid and air pumps · CPC title

• B05B7/0037 Primary

  including sieves, porous members or the like · CPC title

• B05B11/1059

  Means for locking a pump or its actuation means in a fixed position (B05B11/1091 takes precedence) · CPC title

• B05B7/0018 Primary

  with devices for making foam · CPC title

• B05B11/0075

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