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:
Feb. 17, 2009
Filed:
Dec. 30, 2004
Koichi Matsumoto, Kobe, JP;
Masayasu Miyazaki, Yokohama, JP;
Koichi Matsumoto, Kobe, JP;
Masayasu Miyazaki, Yokohama, JP;
Sumitomo Rubber Industries, Ltd., Kobe-Shi, Hyogo, JP;
Abstract
There is provided a backflow preventing mouth plug comprising an elastic membrane element having a discharge opening for discharging fluid and mounted to a mouth part of a container and a plug member disposed in the elastic membrane element to prevent unintentional outflow of the fluid. The plug member has a spherical seal surface with which the elastic membrane element elastically and closely contacts. At least one thick wall portion and at least one thin wall portion are alternately formed around the discharge opening of the elastic membrane element in a circumferential direction thereof.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile