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. 17, 2012
Filed:
Nov. 30, 2004
Applicants:
Charles Edward Riley, Wiltshire, GB;
Michael Kenneth John Chapman, Wiltshire, GB;
Inventors:
Charles Edward Riley, Wiltshire, GB;
Michael Kenneth John Chapman, Wiltshire, GB;
Assignee:
Westinghouse Brake and Signal Holdings Limited, Wiltshire, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B61L 23/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method is disclosed of detecting a railway vehicle, comprising using the time difference between receiving at first and second points a signal sent from the vehicle at a given time to produce an indication of the location of the vehicle.