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. 12, 1990
Filed:
Dec. 11, 1987
Marc Heddebaut, Sainghin en Melantois, FR;
Pierre Degauque, Lambersart, FR;
Denis Duhot, Paris, FR;
Pierre Mainardi, Douvrin, FR;
Societe Anonyme dite: ALSTHOM, Paris, FR;
Abstract
A system for transmitting data and/or instructions and/or localization between a moving element and a control station. The system includes a hollow tube running parallel to the path of the moving element and constituting a waveguide, the tube having an emitting face which is pierced by a network of openings, and the moving element including a pair of microwave transmit and/or receive antennas. The network of openings on the emissive face of the hollow tube makes it possible to transmit two distinct electric field signals between the openings and the transmit and/or receive antenna. One of the signals serves to transmit data and/or instructions, and the other serves to measure the speed and the position of the moving element by detecting the presence of the second signal. Other systems relate to the application of such hollow tubes to automobile toll stations for monitoring an enclosure which is dangerous for personnel.