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:
Jul. 08, 2008
Filed:
Mar. 10, 2005
Applicant:
Akira Nakamura, Yamato-shi, Kanagawa, 242-0012, JP;
Inventor:
Akira Nakamura, Yamato-shi, Kanagawa, 242-0012, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 15/20 (2006.01); A63H 3/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A check valve that reduces leakage caused by flapping is disclosed. The shape of the heat seals focus the flow of gas in the valve so that the flapping that results from using elongated parallel heat seals is reduced. Alternative embodiments also enable tying of balloons while reducing the risk of leaking. Balloons can also be inflated at a greater rate without risk of leakage thereby reducing labor costs and the reduction in leaks also reduces the return of faulty products.