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:
Apr. 02, 2019
Filed:
Apr. 21, 2017
Applicant:
Lockheed Martin Corporation, Bethesda, MD (US);
Inventors:
Nicholas J. Nagurny, Manassas, VA (US);
Derek M. Beckner, Manassas Park, VA (US);
Michael R. Eller, New Orleans, LA (US);
Scott M. Maurer, Haymarket, VA (US);
Trevor J. Owen, Vienna, VA (US);
Assignee:
Lockheed Martin Corporation, Bethesda, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F28D 7/16 (2006.01); F28F 9/14 (2006.01); F28F 9/18 (2006.01); B23K 20/12 (2006.01); B23K 101/14 (2006.01);
U.S. Cl.
CPC ...
F28F 9/18 (2013.01); B23K 20/129 (2013.01); B23K 20/1265 (2013.01); F28D 7/16 (2013.01); F28F 9/14 (2013.01); F28F 9/185 (2013.01); B23K 2101/14 (2018.08); F28F 2275/062 (2013.01); Y10T 29/49364 (2015.01);
Abstract
A process of producing shell and tube heat exchangers where the ends of the tubes are secured to a tube sheet while reacting applied FSW forces without introducing a crevice or local deformation near the ends of the tubes. In particular, an interference fit is used to lock the ends of the tubes into the tube sheet without flaring or expanding the tube ends. A FSW process is then used to weld the ends of the tubes to the tube sheet.