Plug structure

Patent metadata

Field	Value
Publication number	US-9604762-B2
Application number	US-201414494926-A
Country	US
Kind code	B2
Filing date	Sep 24, 2014
Priority date	Jun 25, 2007
Publication date	Mar 28, 2017
Grant date	Mar 28, 2017

Abstract

A plug structure for taking out liquid from a container includes a plug body press-fitted into a container inlet port. The plug body is resiliently deformable with a lower portion being formed into a ring shape and being provided with slits in an axial direction. The plug structure includes a locking claw on an outer peripheral surface of the plug body, which projects toward an inner wall surface of the container inlet port. The locking claw has a minimum diameter substantially the same as or smaller than the inner diameter of the container inlet port. The locking claw has a maximum diameter that is larger than the inner diameter of the container inlet port. The plug structure includes a valve operating portion that presses a valve on a socket connected to the plug body. The valve operating portion is provided on an upper end inlet port of the siphon tube.

First claim

What is claimed is:

1. A plug structure used for a container whose cap attachment screw of a container inlet port is an outer screw, configured to be attached to the container inlet port, comprising:
a plug body to be press-fitted into the container inlet port being resiliently deformable in a radial direction at a lower portion thereof, the lower portion of the plug body being formed into a ring shape and being provided with slits in an axial direction;
a flange portion with a lower surface formed to extend outward from an upper end portion of the plug body, wherein the lower surface is in contact with an upper end surface of the container inlet port;
a locking claw provided on an outer peripheral surface of the lower portion of the plug body so as to project toward an inner wall surface of the container inlet port, the locking claw being set to have a minimum diameter at a lower end portion thereof which is substantially the same with or smaller than the inner diameter of the container inlet port and being set to have a maximum diameter of an upper end portion thereof which is larger than the inner diameter of the container inlet port and larger than an outer diameter of the plug body;
a siphon tube connected to the plug body for taking out liquid in the interior of the container, wherein the siphon tube comprises an upper end inlet port; and
a valve operating portion which presses a valve for discharging liquid provided on a socket which is connected to the plug body after having removed a cap from the container inlet port, wherein the valve operating portion is provided on the upper end inlet port of the siphon tube,
wherein the plug body is fixed in the interior of the container inlet port by locking a shouldered portion of the locking claw on an enlarged portion of an inner wall surface of the container inlet port, the enlarged portion having a diameter greater than the inner diameter of the container inlet port, the shouldered portion being locked on the enlarged portion of the inner wall surface of the container inlet port by a force of the resiliently deformed locking claw in the direction of restoration toward an original shape of the locking claw.

2. The plug structure according to claim 1 , wherein the flange portion is formed with a first seal portion extending over an entire circumference on a lower surface which comes into tight contact with the upper end surface of the container inlet port.

3. The plug structure according to claim 2 , wherein the flange portion includes a second seal portion formed over the entire circumference of an upper surface.

4. The plug structure according to claim 1 , wherein the plug body is configured in such a manner that the ring-shaped lower portion having the locking claw is press-fitted into an upper body and engaged integrally therewith.

5. The plug structure according to claim 1 , wherein the shouldered portion is locked on the enlarged portion of the inner wall surface of the container inlet port in a state where the flange portion is locked by the upper end surface of the container inlet port.

6. The plug according to claim 1 , wherein the siphon tube extends from the plug body to a position in a vicinity of a bottom surface of the container.

7. The plug according to claim 1 , further comprising:
a plurality of gas flow channels penetrating through the plug body, surrounding the siphon tube, facilitating supply of gas into the container.

Assignees

• Surpass Ind Co Ltd

Inventors

• Takanohashi Toshiyuki

Classifications

• Y10T137/314

  Unitary mounting for gas pressure inlet and liquid outlet · CPC title

• B67D7/0266 Primary

  by gas acting directly on the liquid · CPC title

• B65D39/0052 Primary

  made in more than one piece (B65D39/02, B65D39/04, B65D39/06, B65D39/08 take precedence) · CPC title

• B67D7/0294

  Combined with valves · CPC title

• B65D39/04

  Cup-shaped plugs or like hollow flanged members · CPC title