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:
Sep. 05, 2000
Filed:
Jun. 18, 1998
Tomio Tahara, Tokyo, JP;
Kamaya Kagaku Kogyo Co., Ltd., Tokyo, JP;
Abstract
A liquid container has an automatic opening and closing mechanism preventing entry of air into the container, and is convenient for portable use. The liquid container comprises an upper shell and a lower bonded along their outer circumferential ends to define a flat liquid pool between them. At least one of the upper and lower shells is a thin skin member made of a flexible material to be deformable when depressed. The upper shell has formed a through hole communicating with the liquid pool, and a flexible film is bonded onto the upper shell to form the automatic opening and closing mechanism composed of a duct communicating with the through hole and an outlet communicating with the duct between the flexible film and the upper shell.