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:
Jan. 02, 2018
Filed:
Oct. 14, 2013
Applicant:
Georg Fischer Piping Systems Ltd., Schaffhausen, CH;
Inventor:
You Shik Kwak, Busan, KR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L 47/03 (2006.01); F16L 47/00 (2006.01); H05B 3/44 (2006.01); H05B 1/02 (2006.01); H05B 3/14 (2006.01); B29C 65/00 (2006.01); B29C 65/34 (2006.01); B29C 65/56 (2006.01); B29C 65/72 (2006.01); H05B 1/00 (2006.01); B29K 507/04 (2006.01); B29C 65/36 (2006.01);
U.S. Cl.
CPC ...
F16L 47/00 (2013.01); B29C 65/3412 (2013.01); B29C 65/3468 (2013.01); B29C 65/3488 (2013.01); B29C 65/3492 (2013.01); B29C 65/3496 (2013.01); B29C 65/561 (2013.01); B29C 65/72 (2013.01); B29C 66/1248 (2013.01); B29C 66/12441 (2013.01); B29C 66/5221 (2013.01); B29C 66/9192 (2013.01); B29C 66/91214 (2013.01); B29C 66/91221 (2013.01); B29C 66/91317 (2013.01); B29C 66/91411 (2013.01); B29C 66/91651 (2013.01); B29C 66/91921 (2013.01); B29C 66/961 (2013.01); F16L 47/03 (2013.01); H05B 1/00 (2013.01); H05B 1/0283 (2013.01); H05B 3/146 (2013.01); H05B 3/44 (2013.01); B29C 65/3612 (2013.01); B29C 65/3684 (2013.01); B29C 65/3696 (2013.01); B29C 66/52291 (2013.01); B29C 66/71 (2013.01); B29C 66/735 (2013.01); B29C 66/91643 (2013.01); B29C 66/91653 (2013.01); B29C 66/91655 (2013.01); B29C 66/91951 (2013.01); B29K 2507/04 (2013.01);
Abstract
Provided is an electric power control apparatus of an electrofusion coupling pipe using a conductive polymer composite as a heating element and a method of controlling electric power using the same. The electric power control apparatus supplies electric power to the electrofusion coupling pipe using a conductive polymer composite as a heating element to detect resistance variation of the conductive polymer composite and then controls electric power supplied to the synthetic resin pipe electrofusion coupling pipe on the basis of the detected resistance variation.