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. 01, 2014
Filed:
Nov. 09, 2011
Applicant:
Charles W. Morris, Nokesville, VA (US);
Inventor:
Charles W. Morris, Nokesville, VA (US);
Assignee:
Lockheed Martin Corporation, Bethesda, MD (US);
Primary Examiner:
Int. Cl.
CPC ...
G05D 1/00 (2006.01); G01S 19/23 (2010.01);
U.S. Cl.
CPC ...
Abstract
Methods and systems for continually measuring the length of a train operating in a positive train control environment are provided. Particularly, the methods and systems provided herein equate repetitive line of sight ranging measurements from the head end to the rear end of a train with the physically draped length of the train along a mapped track with various horizontal and vertical curvature characteristics.