The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 07, 2025
Filed:
Feb. 10, 2020
Nippon Closures Co., Ltd., Tokyo, JP;
Shinji Ooka, Kanagawa, JP;
NIPPON CLOSURES CO., LTD., Tokyo, JP;
Abstract
A plastic cap is able to be applied to a container having a screw formed with a vent. The plastic cap has an outer ring for sealing at least the outer surface of the mouth of the container, and an inner ring for sealing the inner surface of the container mouth. In a closed state, sealability is maintained by a seal point on the inner surface of the outer ring. In an unsealing step, a seal point on the outer surface of the inner ring is shifted into a pressure-contacted state on the inner surface of the container mouth, where there is no risk of sink marks caused by molding strain, before a seal by the outer ring is released. Thus, reliable sealability can be exhibited even when the cap is applied to a container having inferior dimensional accuracy.