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:
Feb. 01, 2022
Filed:
Apr. 26, 2019
Applicant:
The Boeing Company, Chicago, IL (US);
Inventors:
Paul F. Thieben, Jr., Fountain Valley, CA (US);
Robert French, San Marino, CA (US);
John Suarez, Mission Viejo, CA (US);
Assignee:
The Boeing Company, Chicago, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
B21D 11/06 (2006.01); B01D 53/24 (2006.01); B21D 9/05 (2006.01); B21D 9/15 (2006.01);
U.S. Cl.
CPC ...
B01D 53/24 (2013.01); B21D 9/05 (2013.01); B21D 9/15 (2013.01); B21D 11/06 (2013.01); B01D 2257/504 (2013.01); B01D 2259/4566 (2013.01); B01D 2259/4575 (2013.01);
Abstract
Methods for forming thin wall tubing into a tightly-coiled helical duct comprise selecting a thin wall tube with an outside tube diameter and a wall thickness that is less than 15% of the outside tube diameter; and bending the thin wall tube to form the tightly-coiled helical duct so that an outside duct diameter of the tightly-coiled helical duct is less than four times the outside tube diameter.