Downward compatible agv system and methods
CA 2095442 C · Owner: Zuercher, Joseph Charles · Inventors: Mottes, Rick Samuel; Guest, Vaughn Williams; Forman, Robert Kent
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An automated guided vehicle (AGV) control system which is downward compatible with existing guidewire systems providing both guidewire navigation and communication and autonomous navigation and guidance and wireless communication bettween a central controller and each vehicle. Autonomous vehicle navigation comprises travel over paths marked by update markers which may be spaced well apart, such as fifty feet. Redundant measurement capability comprising inputs from linear travel encoders from the vehicle's drive wheels position measurements from the update markers and bearing measurements from a, novel angular rate sensing apparatus in combination with the use of a Kalman filter allows …
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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
- Filed November 25, 1991 and granted June 10, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 25, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 2013.
- 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
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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.