Industrial solid tires
CA 2064369 C · Owner: Nybakken, George H. · Inventors: Nybakken, George H.; Palinkas, Richard L.; Clonch, David M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wheel for a relatively slow vehicle used in industrial applications and incorporating a solid tire formed of dense elastomer material such as cast polyurethane having a, relatively large radial depth for example six inches, a, relatively large width for example twelve inches, and a deep, slot extending circumferentially around the tire and dividing the tire into sections separated by the slot with the ratio of the depth of the slot to the lateral width of each section being in the range of .65 to 1.75. The tire is bonded to the wheel rim and includes sidewalls containing concave surfaces terminating in relatively thin lips bonded to the outer edges of the rim, keeping stress in the edge …
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 March 27, 1992 and granted February 15, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 27, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 27, 2014.
- 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.