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:
Jun. 07, 2011
Filed:
Oct. 25, 2007
Applicant:
Chih-cheng Shiue, Taipei, TW;
Inventor:
Chih-Cheng Shiue, Taipei, TW;
Assignee:
Qbas Co. Ltd., , TW;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B63C 11/16 (2006.01); B63C 11/02 (2006.01); B63C 11/10 (2006.01); A62B 7/04 (2006.01); A62B 18/08 (2006.01); A62B 17/00 (2006.01); A62B 18/10 (2006.01); A61M 16/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A waterproof structure of a respiratory tube is provided. The waterproof structure comprises a hollow body and a lid. The hollow body has a first opening end and a second opening end opposing to the first opening end. The lid pivots onto the hollow body at the first opening end. Before the lid is immersed into liquid, the gravity of the lid can keep the lid at a certain position so that the respiratory tube is well-ventilated. After a part of the lid is immersed into the liquid, the buoyancy provided by the liquid forces the closing surface thereof to substantially seal the first opening end and prevent liquid from going into the tube.