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:
Aug. 17, 2004
Filed:
Oct. 28, 2002
Akihiro Ishitoya, Sashima-gun, JP;
Takashi Fujimaki, Nagoya, JP;
Kimiyasu Kimura, Nagoya, JP;
Kenichi Ito, Nagoya, JP;
Kyosan Denki Co., Ltd., Sashima-gun, JP;
Abstract
A stop valve which is fitted with a cylindrical supporting portion is comprised of a ring-shaped rigid axial portion, a ring-shaped platy bendable valve portion extending outward, and a sealing lip portion extending inward. The sealing lip portion has a first sealing lip which extends obliquely upward from the rigid axial portion and has a semi-circular seal effecting face provided at an edge thereof, and a second sealing lip which extends obliquely downward from the rigid axial portion and has a semi-circular seal effecting face provided at an edge thereof. The first and second sealing lips have an extending portion which connects the edge seal effecting face with the rigid axial portion and has substantially a same thickness as a diameter of the semi-circular shape.