Arrangement for protecting data communication in a continuous automatic train control system
CA 1076240 A · Owner: International Standard Electric Corporation · Inventors: Ubel, Helmut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
H. UBEL - 22, (Revision), ARRANGEMENT FOR PROTECTING DATA COMMUNICATION IN A CONTINUOUS, AUTOMATIC TRAIN CONTROL SYSTEM Abstract of the Disclosure, A system for protecting data communication against disturbances caused by unsymmetrical standing waves along track conductors wherein automatically controlled terminating resistors are utilized to prevent the formation of standing waves either totally or nearly totally. Baluns may be utilized to cause such standing waves to be automatically balanced. The sensitivity of continuous automatic train control to atmospheric influences and conductor asymmetries is eliminated in accordance with the invention.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted April 22, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 22, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.