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, 2014
Filed:
Dec. 29, 2010
Mikio Tanaka, Tenri, JP;
Mikio Tanaka, Tenri, JP;
Other;
Abstract
The present invention provides a check valvethrough which a fluid can satisfactorily open and pass when the fluid flows forward, and a bagincluding the check valve and having a function of satisfactorily discharging a fluid. This check valve includes a one-side airtight base sheet, an inlet, a valve sheet, an auxiliary sheet, and the other-side airtight base sheet. The portion between the other-side airtight base sheetand the valve sheetserves as a valve flow channel, and a fluid flowing forward passes through the valve flow channelfrom the inletand flows out from the outlet. The valve sheetis fixed at its upstream end by the fixation portion, is freely movable at its downstream end. On the fixation portionand the one-side airtight base sheetof the inlet, the introduction recessesare formed.