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

• US 6,574,848 B2
• Filed: 03/29/2001
• Issued: 06/10/2003
• Est. Priority Date: 05/22/1998
• Status: Expired due to Term

• Current Assignee: Yoshino Kogyosho Company Limited
• Original Assignee: Yoshino Kogyosho Company Limited
• Inventors: Fujie, Takashi, Tamura, Masaru, Kishi, Takao
• Primary Examiner(s): WILSON, LEE D
• Application Number:
  US09/819,700
• Publication Number:
  US 20010011649A1
• Time in Patent Office: 803 Days
• Field of Search: 292/815, 292/811, 292/813, 294/64, 215/256, 215/305, 215/204, 269/910, 269/38, 269/900
• US Class Current: 29/281.5
• 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 the 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 the threaded cylinder of the inner plug, and a cover cylinder covering the shoulder wall and the outer cylinder. The cover cylinder has a diameter larger than a diameter of the side cylinder. The outer cylinder is provided with a cut portion. The shoulder wall is provided with a cut portion connecting to the 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 the cut portion of the shoulder wall. Also, a jig for holding an inner plug unrotatably is provided.

Claims

1. An inner plug and a jig for holding the inner plug unrotatably, said inner plug comprising:

a lip cylinder;

a threaded cylinder; and

an engaging portion, said engaging portion having an outer cylinder and an inner cylinder, said inner plug being provided with a plurality 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.

2. An inner plug and a jig for holding the inner plug unrotatably, said inner plug comprising;

a lip cylinder;

a threaded cylinder; and

an engaging portion, said engaging portion having 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.

3. A jig for holding an inner plug unrotatably, the inner plug having a lip cylinder, a threaded cylinder and an engaging portion, the engaging portion having an outer cylinder and an inner cylinder, the inner plug having a plurality of longitudinal ribs between the lip cylinder and the threaded cylinder, said jib 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.

4. A jig for holding an inner plug unrotatably, said inner plug having a lip cylinder, a threaded cylinder and an engaging portion, said engaging portion having an outer cylinder and an inner cylinder, the lip cylinder having a partition wall, the partition wall being provided on a lower surface thereof with an inner wall aligned and below the lip cylinder, the inner wall having 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.