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:
Oct. 14, 2008
Filed:
Apr. 12, 2005
Applicants:
Ronald J. Zupancich, Clayton, NC (US);
Joseph A. Seiter, Raleigh, NC (US);
Inventors:
Ronald J. Zupancich, Clayton, NC (US);
Joseph A. Seiter, Raleigh, NC (US);
Assignee:
Martin Marietta Materials, Inc., Raleigh, NC (US);
Primary Examiner:
Int. Cl.
CPC ...
B61D 17/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method to insulate an existing door for an existing cargo container, such as a boxcar. In one implementation, the method includes attaching a liner to at least one surface of the door, incorporating an insulating layer, and attaching a gasket to the liner. A door retrofit by this method will have improved thermal efficiency.