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:
Aug. 07, 2018
Filed:
Jul. 05, 2017
Applicant:
The Boeing Company, Chicago, IL (US);
Inventors:
Steven M. Gunther, O'Fallon, IL (US);
Steven J. Burpo, St. Louis, MO (US);
Assignee:
The Boeing Company, Chicago, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
B29C 33/48 (2006.01); B29C 70/30 (2006.01); B29C 33/30 (2006.01);
U.S. Cl.
CPC ...
B29C 33/485 (2013.01); B29C 70/30 (2013.01); B29C 33/307 (2013.01); Y02T 50/43 (2013.01);
Abstract
A collapsible, coiled mandrel, for use in co-curing of a hollow carbon-epoxy structure such as a stringer in aircraft construction, is made of a coil having an outer coil shape resistant to external compression forces when used as a mandrel during lay-up and curing, and is collapsible when an end of the coil is pulled along its longitudinal axis so that it can be easily removed after curing and discarded.