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:
Aug. 27, 2002
Filed:
Sep. 18, 2001
Robert D. Pascoe, Pittsburgh, PA (US);
Union Switch & Signal, Inc., Pittsburgh, PA (US);
Abstract
A passive detection system for a levitated vehicle includes track circuits. Each track circuit includes a detection loop having a cable with a first end, a length and a second end. The track circuit also includes a transmitter electrically connected to the first end of the cable and adapted to source a current to the detection loop, and a receiver electrically connected to the second end of the cable and adapted to sense the current from the detection loop. An inductor core includes two openings adapted to receive the length of the cable and two openings adapted to avoid the first and second ends of the cable. The inductor core is adapted to change the sensed current of the receiver, in order to detect a presence of the levitated vehicle at the detection loop. A member is adapted to support the inductor core from the vehicle.