Splined clutch drum mounting
CA 2060366 C · Owner: Johnson, Douglas Rene · Inventors: Johnson, Douglas Rene
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure An oil passage connection between a shaft and a clutch drum is sealed by intentionally providing an imbalance in the forces acting on splines mounting the clutch drum to the shaft. The sides of at least some of the splines are angled so that at least some part of any torque applied between the clutch drum and shaft is resolved into radial components. By providing a differing number of splines or an asymmetrical, positioning of the splines the net force can be designed to, force the sides of the shaft and the clutch drum adjacent to the oil passage tightly together. This is most easily accomplished by simply omitting one or more splines from the clutch drum on …
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 January 30, 1992 and granted October 19, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 30, 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.