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:
Feb. 19, 1991
Filed:
Dec. 27, 1989
William A Petit, Spencerport, NY (US);
General Signal Corporation, Stamford, CT (US);
Abstract
A system for automatic operation of rapid transit vehicles in a railway yard. The vehicles have a receiver system which is responsive to information communicated thereto and a control system responsive to the receiver system for controlling the continued operation of vehicle. The invention includes: a first entry/exit track circuit having at least one transmitting system for transmitting vehicle control information to vehicles within its section of the first entry/exit track circuit, and at least one switching system for reversing the first entry/exit track circuit; a second entry/exit track circuit having at least one transmitting system for transmitting vehicle control information to vehicles within its section of the second entry/exit track circuit, and at least one switching system for reversing the second entry/exit track circuit.