Sealing mechanism for vessel and cap to be used in the mechanism

• US 6,921,087 B2
• Filed: 11/01/2002
• Issued: 07/26/2005
• Est. Priority Date: 08/20/2002
• Status: Expired due to Fees

• Current Assignee: Shupon Laboratory, Inc.
• Original Assignee: Nippon Tansan Gas Co. Ltd. (Mitsubishi Chemical Group Corp.)
• Inventors: Takahashi, Masashi, Yoshiwara, Tetsuo
• Primary Examiner(s): PEAVEY, ENOCH E
• Application Number:
  US10/286,486
• Publication Number:
  US 20040036229A1
• Time in Patent Office: 998 Days
• Field of Search: 222/81, 222/83, 222/129, 222/511, 222/510, 206/219, 206/221, 277/628
• US Class Current: 277/628
• CPC Class Codes: B65D 51/2878 the element being a lid or cover seated on a passage between the auxiliary container and the main container

Abstract

A cap has a plug portion, a seal plug and a sleeve. At the plug portion a side and a cylindrical wall project from a top board. An inner circumferential surface of the side wall fits on an outer circumferential surface of an opening portion of a vessel and covers the opening portion with the top board. The cylindrical wall forms a receiving chamber having an opening mouth at its under end face. The seal plug seals the opening mouth. The sleeve is loosely fitted on the cylindrical wall and opens the opening mouth by separating the seal plug from the cylindrical wall at relative movement of the cap. A sepal portion on the outer circumference of the sleeve is larger than inner diameter of the opening portion at its outer diameter and has flexibility to pass the inner diameter bending so as to avoid backward moving.

Claims

1. A scaling mechanism for a vessel (2) which mechanism characterized in that:

said vessel (2) and a cap (1) are provided,

which vessel (2) having an opening portion (3) and which cap (1) having a plug portion (4), a seal plug (5) arid a sleeve (6),

said plug portion (4) has a top board (11) to cover said opening portion (3), a side wall (12) projecting from said top board (11) along axis (X) of said plug portion (4) and the side wall (12) is directly fitted on an outer circumferential surface of said opening portion (3) of the vessel (2), and a cylindrical wall (15) forming a receiving chamber (14) having an opening mouth (13) at its under end face which wall projects from said top board (11) at inner side of said side wall (12),

said seal plug (5) is to be fixed on said cylindrical wall (15) to seal said opening mouth (13) and its outer diameter (D1) is larger than outer diameter (D2) of said cylindrical wall (15),

said sleeve (6) is loosely fitted on said cylindrical wall (15) and has a flexible sepal portion (16) on said outer circumference which portion baa outer diameter larger than inner diameter (D3) of said opening portion (3) and passes said inner diameter (D3) bending so as to avoid backward moving,

and at relative movement of said cap (1) to said vessel (2) toward direction where they separate from each other, said seal plug (5) is separated by said sleeve (6) from said cylindrical wall (15) and said opening mouth (13) is to be opened.

2. A sealing mechanism for a vessel (2) which mechanism characterized in that:

said vessel (2) and a can (1) are provided,

which vessel (2) having an opening portion (3) and which cap (1) having a plug portion (4), a seal plug (5) and a sleeve (6),

said plug portion (4) has a top board (11) to cover said opening portion (3), a side wall (12) projecting from said ton board (11) along axis (X) of said plug portion (4) which wall has an inner circumferential surface fits on an outer circumferential surface of said opening portion (3), and a cylindrical wall (15) forming a receiving chamber (14) having an opening mouth (13) at its under end face which wail projects from said top board (11) at inner side of said side wall (12),

said seal plug (5) is to be fixed on said cylindrical wall (15) to seal said opening mouth (13) and its outer diameter (D1) is larger than outer diameter (D2) of said cylindrical wall (15),

said sleeve (6) is loosely fitted on said cylindrical wall (15) and has a flexible sepal portion (16) on said outer circumference which portion has outer diameter larger than inner diameter (D3) of said opening portion (3) and passes said inner diameter (D3) bending so as to avoid backward moving,

and at relative movement of said cap (1) to said vessel (2) toward direction where they separate from each other, said seal plug (5) is separated by said sleeve (6) from said cylindrical wall (15) and said opening mouth (13) to be opened, and

wherein said opening portion (3) has a circular groove (7) and said sleeve (6) has a circular protruding portion (17) on outer circumferential face which portion engages with said circular groove (7).

3. A sealing mechanism as claimed in claim 2 wherein said sleeve (6) has a flange (18) formed on its upper end surface which flange engages on an end surface (8) of said opening portion (3).

4. A sealing mechanism as claimed in claim 2 wherein said sleeve (6) and said seal plug (5) are connected.

5. A sealing mechanism as claimed in claim 2 wherein said sleeve (6), said seal plug (5) and said vessel (2) are made of same material.

6. A sealing mechanism as claimed in claim 4 wherein said sleeve (6), said seal plug (5), a connecting portion (19) of said sleeve (6) and said seal plug (5) and said vessel (2) are made of same material.

13. A sealing mechanism as claimed in claim 3 wherein said sleeve (6) and said seal plug (5) are connected.

14. A sealing mechanism as claimed in claim 3 wherein said sleeve (6), said seal plug (5) and said vessel (2) are made of same material.

15. A sealing mechanism as claimed in claim 13 wherein said sleeve (6), said seal plug (5), a connecting portion (19) of said sleeve (6) and said seal plug (5) and said vessel (2) are made of same material.

7. A cap to be used in a sealing mechanism for vessel (2) which cap characterized in that:

a plug portion (4), a seal plug (5) and a sleeve (6) are provided,

said plug portion (4) has a top board (11) to cover an opening portion (3) of said vessel (2), a side wall (12) projecting from said top board (11) along axis (X) of said plug portion (4) the side wall (12) is directly fitted on an outer circumferential surface of said opening portion (3) of the vessel (2), and a cylindrical wall (15) forming a receiving chamber (14) having an opening mouth (13) at its under end face which wall projects from said top board (11) at inner aide of said side wall (12),

said seal plug (5) is to be fixed on said cylindrical wall (15) to seal said opening mouth (13) and its outer diameter (D1) is larger than outer diameter (D2) of said cylindrical wall (15),

said sleeve (6) is loosely fitted on maid cylindrical wall (15) and has a flexible sepal portion (16) on aaid outer circumference which portion has outer diameter larger than inner diameter (D3) of said opening portion (3) and passes said inner diameter (D3) bending so as to avoid backward moving,

and in relative movement to said vessel (2) toward direction to separate from said vessel (2), said meal plug (5) is separated by said sleeve (6) from maid cylindrical wall (15) and said opening mouth (13) is to be opened.

8. A cap to be used in a sealing mechanism for vessel (2) which can characterized in that:

a plug portion (4), a seal plug (5) and a sleeve (6) are provided,

said plug portion (4) has a top board (11) to cover an opening portion (3) of said vessel (2), a side wall (12) projecting from said top board (11) along axis (X) of said plug portion (4) which wall has an inner circumferential surface fits on an outer circumferential surface of said opening portion (3), and a cylindrical wall (15) forming a receiving chamber (14) having an opening mouth (13) at its under end face which wall projects from said top board (11) at inner side of said side wall (12),

said seal plug (5) is to be fixed on said cylindrical wall (15) to seal said opening mouth (13) and its outer (D1) is larger than outer diameter (D2) of said cylindrical wall (15),

said sleeve (6) is loosely fitted on said cylindrical wall (15) and has a flexible sepal portion (16) on said outer circumference which portion has outer diameter larger than inner diameter (D3) of said opening portion (3) and passes said inner diameter (D3) bending so as to avoid backward moving,

and in relative movement to said vessel (2) toward direction to separate from said vessel (2), said seal plug (5) is separated by said sleeve (6) from said cylindrical wall (15) and said opening mouth (13) is to be opened, and

wherein said opening portion (3) has a circular groove (7) and said sleeve (6) has a circular protruding portion (17) on outer circumferential face which portion engages with said circular groove (7).

9. A cap as claimed in claim 8 wherein said sleeve (6) has a flange (18) formed on its upper end surface which flange engage on an end surface (8) of said opening portion (3).

10. A cap as claimed in claim 8 wherein said sleeve (6) and said seal plug (5) are connected.

11. A cap as claimed in claim 8 wherein said sleeve (6), said scalping (5) and said vessel (2) are made of same material.

12. A cap as claimed in claim 10 wherein said sleeve (6), said seal plug (5), a connecting portion (19) of said sleeve (6) and said seal plug (5) and said vessel (2) are made of same material.

16. A cap as claimed in claim 9 wherein said sleeve (6) and said seal plug (5) are connected.

17. A cap as claimed in claim 9 wherein said sleeve (6), said seal plug (5) and said vessel (2) at made of same material.

18. A cap as claimed in claim 16 wherein said sleeve (6), said seal plug (5), a connecting portion (19) of said sleeve (6) and said seal plug (5) and said vessel (2) are made of same material.