Universal joint having hemispherical cup-shaped yoke and exterior, lubricating ring
CA 2319975 C · Owner: Cornay, Paul J. · Inventors: Cornay, Paul J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A universal joint that includes a ring having a lubricant channel for allowing lubricant flow. A yoke is disposed within the ring. The universal joint further includes a shaft and pins pivotally interconnecting the yoke and the shaft to the ring. A number of bearings are disposed in the ring in fluid contact with the lubricant channel. The lubricant channel is non-continuous, extending less than 360 degrees around the ring such that lubricant entering a first lubricant port must travel through the entire length of the lubricant chancel before exiting through a second lubricant port.
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 June 28, 1990 and granted February 19, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 28, 2012.
- 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.