Traction device for a wheeled vehicle
CA 2322091 C · Owner: Emergency Traction Device, Llc · Inventors: Robeson, Palmer
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present disclosure concerns an emergency traction device that may be easily and securely fitted on vehicles having tires of different diameters and widths. A single winch sizes and secures the traction device for the proper tire diameter and then for the proper tire width. Traction can be further enhanced with members that substantially circumscribe the tire. Operation of the traction device can be enhanced by providing gearing that resists being back driven for example worm type gearing, for operating the winch.
Read the whole patent
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 October 3, 2000 and granted April 8, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 3, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 3, 2022.
- 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.