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:
Oct. 17, 2006
Filed:
Oct. 14, 2003
Applicant:
Taijiro Sueda, Hiroshima, JP;
Inventor:
Taijiro Sueda, Hiroshima, JP;
Assignee:
Hiroshima University, Kagamiyama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 15/00 (2006.01); A61M 1/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A check valve includes a casing member, a tear-drop shaped ball member installed in the casing member, a latching member which is formed at an inner wall of the casing member and an airtight valve which is formed at an inner wall of the casing member. When forward flux occurs, the ball member is fixed at the latching members absolutely to circulate the forward flux stably. When backward flux occurs, the ball member is latched at the airtight member to close the casing member and thus, to suppress the backward flux.