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. 03, 2003
Filed:
Dec. 20, 2001
Applicant:
Inventors:
James Arthur Berry, Fairport, NY (US);
Naor Wallach, Pittsford, NY (US);
Assignee:
Alstom Signaling, Inc., Rochester, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/34 ;
U.S. Cl.
CPC ...
G02B 6/34 ;
Abstract
A system for controlling a train's approach on a right-of-way to a grade crossing such that a uniform warning time is ensured comprising: a communication based train control scheme including a computer situated on the train; a device for detecting the presence of the train at a first control point on the right-of-way and for determining the train's speed thereat; a device for activating the gate at the grade crossing responsive to the train being at a second control point on the right-of-way wherein the second control point is based on the determined speed such that a uniform warning time is provided.