Bottle cap

a bottle cap and automatic mounting technology, applied in the field of bottles, can solve the problems of high cost, complicated structure and operation of the automatic mounting apparatus of the bottle cap on the bottle mouth, etc., and achieve the effect of simplifying structure and operation and reducing cos

Inactive Publication Date: 2005-09-29
MAKITA MASAYUKI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0019] It is an object of the present invention to provide a bottle cap which can achieve similar operation to that of the conventional bottle cap described above even if the parent cap of the conventional bottle cap described hereinabove is omitted, that is, can separate, when an unplugging operation

Problems solved by technology

However, the bottle cap described above has the following problems.
(1) Since the bottle cap includes three parts of the parent cap 1, child cap 2 and bottom lid 3 and particularly the parent cap 1 has a complicated structure, a high cost is required, and also an automatic cap mounting apparatus for automatically mounting the bottle cap on the mouth of a bottle is com

Method used

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Examples

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first embodiment

[0067] Referring to FIGS. 5(A), 5(B), 6 and 7, there is shown a bottle cam according to a first embodiment of the present invention. The bottle cap shown includes two parts of a cap body A molded as a unitary member from a hard plastic material and an upper lid D in the form of a disk molded as a unitary member from a hard plastic material but separately from the cap body A. Further, as occasion demands, a sheet member E is applied to the upper lid D.

[0068] The cap body A is formed as a unitary molded member and includes an outer tube portion 51, a ceiling portion 52 having a circular raw material supplying entrance 52a, an inner tube portion 53 extending downwardly from the ceiling portion 52, and a bottom lid 54 at a lower end of the inner tube portion 53. A threaded portion 51c for engaging with a threaded portion 50b provided on an outer circumferential face of a mouth 50a of the bottle 50 is formed on an inner circumference of the outer tube portion 51. Further, a thin cut 55 ...

second embodiment

[0083] Now, a bottle cap according to a second embodiment of the present invention is described.

[0084] Referring to FIGS. 12(A), 12(B) and 13, the bottle cap of the second embodiment includes two parts of a cap body A molded as a unitary member from a hard plastic material and a bottom lid B molded as a separate unitary member from a hard plastic material.

[0085] The cap body A is a molded unitary member including an outer tube portion 51, a ceiling portion 52, and an inner tube portion 53 extending downwardly from the ceiling portion 52. A threaded portion 51c for engaging with a threaded portion 50b provided on an outer circumferential face of a mouth 50a of a bottle 50 such as a PET bottle shown in FIG. 15 is formed on an inner circumference of the outer tube portion 51. Further, a thin cut 55 is formed along an entire circumference at a lower circumferential edge portion of the outer tube portion 51 so that a portion of the outer tube portion 51 on the upper side with respect t...

third embodiment

[0103] Now, a bottle cap according to a third embodiment of the present invention is described with reference to FIGS. 20 to 23.

[0104] The bottle cap of the third embodiment is composed of a single part formed as a molded unitary member made of a hard plastic material and including a cap body A and an upper lid D in the form of a disk. A sheet member E is adhered to the upper lid D as occasion demands.

[0105] The cap body A is formed as a unitary member molded together with the upper lid D by simultaneous molding and includes an outer tube portion 51, a ceiling portion 52 having a circular raw material supplying entrance 52a, an inner tube portion 53 extending downwardly from the ceiling portion 52, and a bottom lid 54 at a lower end of the inner tube portion 53 similarly as in the bottle cap of the first embodiment. A threaded portion 51c for engaging with a threaded portion 50b provided on an outer circumferential face of a bottle mouth 50a of the bottle 50 is formed on an inner ...

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Abstract

A bottle cap is disclosed which can be formed from a minimized number parts with a reduced cost. A bottom lid is molded integrally at a lower end of an inner tubular portion of a cap body with a cut formed therebetween and has unsealing projections formed in a projecting manner thereon. When the cap body is turned in a sealing direction to insert the inner tubular portion into a mouth of a bottle, the unsealing projections are closed by the bottle mouth and are engaged with a throat portion in the bottle when it passes the throat portion. Then, when the cap body is turned in an unsealing direction to pull out the inner tubular portion from the bottle mouth, the unsealing projections are blocked from upward movement by the throat portion, whereupon the bottom lid is separated at the cut from the lower end of the inner tubular portion and raw material in the inner tubular portion is discharged into the bottle.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a bottle cap which has a raw material accommodating portion for accommodating a raw material in the form of powder or liquid and opens a lower end of the raw material accommodating portion in response to an unplugging operation to discharge the raw material into a bottle. [0003] 2. Description of the Related Art [0004] A bottle cap of the type mentioned is conventionally known and disclosed, for example, in Japanese Utility Model Publication No. S44-12957 (hereinafter referred to as Patent Document 1: particularly refer to page 1 of the specification and FIGS. 1 and 2) and Japanese Patent No. 3,281,730 (hereinafter referred to as Patent Document 2: particularly refer to page 2 of the specification and FIGS. 1 and 3). The inventor of the present invention has proposed and commercialized a bottle cap which overcomes drawbacks of the bottle caps of Patent Document 1 and Patent Document ...

Claims

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Application Information

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IPC IPC(8): B29C45/16B65D51/28
CPCB29C45/1676B65D51/2878B65D51/2842B29C2045/1601F24F7/06F24F11/30F24F2110/40F24F11/54F24F11/62F24F2110/50F24F3/167
Inventor MAKITA, MASAYUKI
Owner MAKITA MASAYUKI
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