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. 29, 2021
Filed:
May. 22, 2019
Applicant:
Toflo Corporation, Hino, JP;
Inventors:
Assignee:
TOFLO CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K 11/087 (2006.01); F16K 5/06 (2006.01); F16K 31/05 (2006.01); F16K 5/20 (2006.01);
U.S. Cl.
CPC ...
F16K 11/0873 (2013.01); F16K 5/0605 (2013.01); F16K 5/0673 (2013.01); F16K 5/201 (2013.01); F16K 31/055 (2013.01);
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.