Reduced-drag trailer
CA 2315339 C · Owner: Kingham, James · Inventors: Kingham, James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A transportable hauling container, such as a trailer of a tractor-trailer combination, has a rear, portion that is configured in or convertible to a wedge shape. Movable portions are located at the, rear sides of the trailer that can pivot inward toward a longitudinal centerline. Movable flaps also, are located at the rear top of the trailer which can pivot downward in , alignment with the movable portions. The movable portions and flaps can be secured relative to each other in various, combinations, thereby providing a more aerodynamic configuration of the trailer rear end. The, container or trailer can be configured in such an arrangement or be , convertible from a standard, …
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 August 3, 2000 and granted April 8, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 3, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 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.