Structure for a dump truck whose dumpbox rests on a cradle-frame, the lower part of said dumpbox fitting into said cradle-frame
CA 2006581 C · Owner: Guillaume, Bernard · Inventors: Guillaume, Bernard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention concerns a new method of building dump trucks. The box (6) rests on a fixed cradle (5) which serves as a frame (1) and the lower portion of the said box (6) fits into the cradle because the section of the cradle matches the section of the lower portion (10) of the box that is smaller in size so that the box can fit into the cradle. The said box and the said cradle are constituted by volumes that are practically concentric in cross-section so that the lower portion (10) of the said box will fit precisely into the said cradle. The invention applies to dump trucks.
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 December 22, 1989 and granted April 27, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 22, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 22, 2011.
- 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.