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:
Jun. 27, 2000
Filed:
Feb. 23, 1998
Applicant:
Inventor:
Dwight D Curtis, Cedar Rapids, IA (US);
Assignee:
WABTEC Corporation, Wilmerding, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B61L / ; G01S / ;
U.S. Cl.
CPC ...
702158 ; 702159 ; 701301 ; 701213 ; 246125 ; 2461 / ; 340903 ;
Abstract
A method and apparatus for determining the length of a train utilizing received signal such as a reference signal from a global positioning system or the like is disclosed. A first receiver receives a signal, such as a reference signal from a global positioning system or the like, from which a first position on a train may be determined. Similarly, a second receiver receives a signal from which a second position on the train may be determined. A processor, operatively coupled to the first and second receivers, determines the length of the train based on the first and second positions.