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:
Nov. 05, 2019
Filed:
Jul. 01, 2015
Applicant:
Sumitomo Metal Mining Co., Ltd., Tokyo, JP;
Inventors:
Hiroki Jinno, Tokyo, JP;
Tetsurou Gotou, Tokyo, JP;
Tsuyoshi Ito, Tokyo, JP;
Tooru Kitazaki, Tokyo, JP;
Assignee:
SUMITOMO METAL MINING CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K 15/06 (2006.01); C22B 3/00 (2006.01);
U.S. Cl.
CPC ...
F16K 15/063 (2013.01); C22B 23/0415 (2013.01);
Abstract
A cone valve of the present invention enables to extend a lifespan more than a conventional cone valve even if it is used as a check valve when feeding slurry containing highly abrasive coarse particles. A cone valve () used as a check valve when feeding slurry, comprising at least a valve body (), a valve seat (), and a spring () incorporated to make the valve body () contact the valve seat (), wherein an entire length of the spring () is at least shorter than a stroke length of the valve body ().