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.:

US 9403321 B1

Date of Patent:

Aug. 02, 2016

Filed:

Nov. 08, 2012

Method for manufacturing high performance butterfly valve liner

Applicant:

Fluonics Corp., Gangwon-do, KR;

Inventor:

Sang Seon Lee, Gangwon-do, KR;

Assignee:

Fluonics Corp., Gangwon-do, KR;

Attorney:

Primary Examiner:

Barbara J Musser

Int. Cl.

CPC ...

F16K 27/02 (2006.01); B29C 57/04 (2006.01); B29C 65/00 (2006.01); B29K 27/18 (2006.01); B29K 105/00 (2006.01); B29L 31/00 (2006.01); B29C 65/02 (2006.01); B29C 53/40 (2006.01);

U.S. Cl.

CPC ...

B29C 66/4322 (2013.01); B29C 57/04 (2013.01); F16K 27/0218 (2013.01); F16K 27/0272 (2013.01); B29C 53/40 (2013.01); B29C 65/02 (2013.01); B29C 66/1122 (2013.01); B29C 66/474 (2013.01); B29C 66/71 (2013.01); B29C 2793/0081 (2013.01); B29K 2027/18 (2013.01); B29K 2105/256 (2013.01); B29L 2031/7506 (2013.01); Y10T 156/1043 (2015.01);

Abstract

The present invention relates to a method for manufacturing a high performance butterfly valve liner, comprising: a pre-processing step of preparing in advance a PTFE sheet and a cap in a predetermined size and thickness; a first welding step of welding the cap on a hole after forming the hole at a specific position of the prepared PTFE sheet; a second welding step of welding the end of the PTFE sheet after the first welding so as to form the PTFE sheet in a cylindrical shape; and a flaring step of carrying out flaring for spreading the end of the cylindrical PTFE sheet in the shape of a trumpet by means of a flaring tool, thereby finishing a liner. According to the method for manufacturing a high performance butterfly valve liner of the present invention, easy and simple manufacture is possible thereby reducing work time and manufacturing costs. In addition, a large-diameter valve can be readily manufactured without limitations on the size to be formed.

Find Patent Forward Citations

Lee, Sang. (2016). Method for manufacturing high performance butterfly valve liner (U.S. Patent No. 9403321). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9403321

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