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. 15, 2021
Filed:
Aug. 20, 2019
Applicant:
Mcelroy Manufacturing, Inc., Tulsa, OK (US);
Inventors:
Amanda Hawkins, Bixby, OK (US);
Arthur H. McElroy, II, Tulsa, OK (US);
James S. Johnston, Jr., Coweta, OK (US);
Dave Ray Hughes, Tulsa, OK (US);
Assignee:
McElroy Manufacturing, Inc., Tulsa, OK (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 41/00 (2006.01); B29C 65/00 (2006.01); F16L 13/08 (2006.01); B29C 65/20 (2006.01);
U.S. Cl.
CPC ...
B29C 66/9441 (2013.01); B29C 65/20 (2013.01); B29C 66/5221 (2013.01); B29C 66/71 (2013.01); F16L 13/08 (2013.01);
Abstract
A method for minimizing the time to form a polyethylene pipe e joint comprises the steps of performing a butt-fusion process until the beginning of the full cooling cycle; holding an interfacial pressure through a minimum cool time calculated using a formula based on the wall thickness of the pipe e, the initial bulk temperature of the pipe e, and a heat soak time; and releasing the interfacial pressure from the fused pipe e joint at the end of the calculated minimum cool time.