Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Michihiro Ogawa0
Takahiro Kawamoto0
Takuo Simada0
Date of Patent
June 29, 2021
0Patent Application Number
164194070
Date Filed
May 22, 2019
0Patent Citations
Patent Citations Received
Patent Primary Examiner
Patent abstract
A ball valve includes a ball that has a passage hole and is rotatably supported, a ball packing that is made of polyimide and is in contact with an outer circumferential face of the ball, and a ball retainer that holds the ball packing, and a spring-loaded lip seal that is installed between the ball packing and the ball retainer and has a metallic spring fit inside a seal case made of a resin.
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