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Patent Searching and Data


Title:
CAP
Document Type and Number:
WIPO Patent Application WO/2021/060252
Kind Code:
A1
Abstract:
Provided is a cap capable of improving airtightness without an increase in opening torque and closing torque. The cap is provided with: a shell 1 having a top wall 3, a sidewall 4 extending downward from the peripheral edge of the top wall 3, and a female thread 5 formed on the sidewall 4 and to be screwably engaged to a male thread M1 of a container mouth part M; and a gasket 2 held inside the shell 1 and sealing the container mouth part M. The gasket 2 is provided with a top plate 10 for covering the container mouth part M and a shank 11 disposed continuing from the lower surface of the top plate 10 and coming into close contact with the inner peripheral surface of the container mouth part M, and the center portion of the top plate 10 is displaced downward more significantly than the peripheral edge portion thereof as the top plate 10 elastically deforms when being pushed downward by the top wall 4 during closing.

Inventors:
KUROIWA YASUFUMI (JP)
KENJOU HIRONORI (JP)
SAKAINO KAZUMA (JP)
Application Number:
PCT/JP2020/035724
Publication Date:
April 01, 2021
Filing Date:
September 23, 2020
Export Citation:
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Assignee:
NIHON YAMAMURA GLASS CO LTD (JP)
International Classes:
B65D49/12; B65D53/06
Domestic Patent References:
WO2009096019A12009-08-06
Foreign References:
JPH11193041A1999-07-21
US6412661B12002-07-02
Attorney, Agent or Firm:
FUJIMOTO Hideo (JP)
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