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:
May. 15, 2018
Filed:
Feb. 29, 2016
Crc-evans Pipeline International, Inc., Houston, TX (US);
Mark Clemmons, Houston, TX (US);
Shankar Rajagopalan, Cypress, TX (US);
Jason W. Curbo, League City, TX (US);
Jose C. Bouche, Houston, TX (US);
Siddharth Mallick, Spring, TX (US);
Brian L. Kirk, Kingwood, TX (US);
CRC—Evans Pipeline International, Inc., Houston, TX (US);
Abstract
Apparatus, systems, processes, control systems, means and methods for near-weld gas purging and welding. A focused circumferential near-weld purge gas delivery system for pipeline welding. A near-weld purge rig which has a near-weld purge gas channel and which achieves a low oxygen concentration proximate to a pipe gap for welding. The gas used for purging is also directed against an interior surface of the pipe to be welded. The directed gas cools the pipe to a desired temperature.