Inner plug and cap for liquid injection containers, and jig used to fix cap to inner plug

• US 20010011649A1
• Filed: 03/29/2001
• Published: 08/09/2001
• Est. Priority Date: 05/22/1998
• Status: Active Grant

• Current Assignee: Yoshino Kogyosho Company Limited
• Original Assignee: Yoshino Kogyosho Company Limited
• Inventors: Fujie, Takashi, Tamura, Masaru, Kishi, Takao
• Granted Patent: US 6,574,848 B2
• Time in Patent Office: Days
• US Class Current: 215/256
• CPC Class Codes: B65D 2401/00 Tamper-indicating means relating to aerosol containers B65D83/224
• CPC Class Codes: B65D 2565/385 especially suited for or with means facilitating recycling
• CPC Class Codes: B65D 47/103 Membranes with a tearing element
• CPC Class Codes: B65D 47/123 with internal parts
• CPC Class Codes: Y10T 29/53961 with work-holder for assembly
• CPC Class Codes: Y10T 29/53978 including means to relatively position plural work parts

Abstract

The present invention provides an inner plug easily removable from a neck of a container, and a cap for covering the inner plug. The inner plug comprises an engaging portion to be fitted to a neck of the container, a threaded cylinder, and a lip cylinder connected to said threaded cylinder. The engaging portion comprises an inner cylinder, an outer cylinder, and a shoulder wall. The threaded cylinder is arranged on the inner cylinder. The cap has a side cylinder to be engaged with said threaded cylinder of said inner plug, and a cover cylinder covering said shoulder wall and said outer cylinder. The cover cylinder has a diameter larger than a diameter of said side cylinder. The outer cylinder is provided with a cut portion. The shoulder wall is provided with a cut portion connecting to said cut portion of the outer cylinder. The shoulder wall is provided on a lower surface thereof with a tear off groove along the outer cylinder. The groove is connected to said cut portion of the shoulder wall. Also, a jig for holding an inner plug unrotatably is provided.

Claims

1. A cover for a liquid injection container comprising an inner plug and a cap,

said inner plug comprising an engaging portion to be fitted to a neck of the container, a threaded cylinder and a lip cylinder connected to said threaded cylinder,

said engaging portion comprising an inner cylinder, an outer cylinder, and a shoulder wall,

said threaded cylinder being arranged on the inner cylinder,

said cap having a side cylinder to be engaged with said threaded cylinder of said inner plug, and a cover cylinder covering said shoulder wall, and said outer cylinder,

said cover cylinder having a diameter larger than a diameter of said side cylinder,

said outer cylinder being provided with a cut portion,

said shoulder wall being provided with a cut portion connecting to said cut portion of the outer cylinder,

said shoulder wall being provided on a lower surface thereof with a tear off groove along the outer cylinder, and

said groove being connected to said cut portion of the shoulder wall.

5. A cover member of a liquid injection container according to claims 1, 2 or 3, wherein the cap is molded from a transparent or a semitransparent synthetic resin.

2. A cover for a liquid injection container comprising an inner plug and a cap,

said inner plug comprising an engaging portion to be fitted to a neck of the container, a threaded cylinder, and a lip cylinder connected to said threaded cylinder,

said engaging portion comprising an inner cylinder, an outer cylinder, and a shoulder wall,

said threaded cylinder being arranged on the inner cylinder,

said cap having a side cylinder to be engaged with said threaded cylinder of said inner plug, and a cover cylinder covering said shoulder wall and said outer cylinder,

said cover cylinder having a diameter larger than a diameter of said side cylinder,

said outer cylinder having a connecting portion, and being provided with a cut portion,

said shoulder wall being provided with a cut portion connecting to said cut portion of the outer cylinder,

said shoulder wall being provided on a lower surface thereof with a tear off groove along the outer cylinder,

said groove being connected to said cut portion of the shoulder wall, and

an lower end of said outer cylinder extending beyond a lower end of the cylindrical wall of the cap.

4. A cover member of a liquid injection container according to claims 2 or 3, wherein a color of the inner plug is different from a color of the cap.

3. A cover for a liquid injection container comprising an inner plug and a cap,

said inner plug comprising an engaging portion to be fitted to a neck of the container, a threaded cylinder, and a lip cylinder connected to said threaded cylinder,

said engaging portion comprising an inner cylinder, an outer cylinder, and a shoulder wall,

said threaded cylinder being arranged on the inner cylinder,

said cap having a side cylinder to be engaged with said threaded cylinder of said inner plug, and a cover cylinder covering said shoulder wall, and said outer cylinder,

said cover cylinder having a diameter larger than a diameter of said side cylinder,

said outer cylinder having a connecting portion, and being provided with a cut portion,

said shoulder wall being provided with a cut portion connecting to said cut portion of the outer cylinder,

said shoulder wall being provided on a lower surface thereof with a tear off groove along the outer cylinder,

said groove being connected to said cut portion of the shoulder wall, and

the outer cylinder being provided on an outer surface thereof at a lower end thereof with a flange.

6. A jig for holding an inner plug unrotatably, said inner plug comprising a lip cylinder, a threaded cylinder, and an engaging portion, said engaging portion comprising an outer cylinder, and an inner cylinder,

said inner plug being provided with a lot of longitudinal ribs between the lip cylinder and the threaded cylinder,

said jig comprising a column and a cylinder, said column having a diameter substantially same as a diameter of an inner surface of said inner cylinder, said cylinder extending from an outer periphery of the column and having a thickness substantially same as a space between the lip cylinder and the threaded cylinder,

said cylinder being provided with slits corresponding to said longitudinal ribs.

7. A jig for holding an inner plug unrotatably, said inner plug comprising a lip cylinder, a threaded cylinder, and an engaging portion, said engaging portion comprising an outer cylinder and an inner cylinder,

said lip cylinder having a partition wall, said partition wall being provided on a lower surface thereof with an inner wall aligned and below the lip cylinder, said inner wall being formed with vertical ribs on an inner surface thereof,

said jig comprising a holding base and a support step for receiving a lower end of the inner wall of the inner plug,

said holding base being provided with vertical grooves which engage with the vertical ribs, said holding base having an outer surface which engages with an inner surface of the inner wall of the inner plug.