Overrunning coupling assembly and manufacturing method
CA 2321916 C · Owner: Ruth, Stephen M. · Inventors: Ruth, Stephen M.; Shaw, David W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hub (72) for a torque-transmitting member comprising a planar clutch. The clutch includes a pocket plate (78) and a notch plate (84) located within the hub (72). One plate is integrated within the hub (72) such as by casting or , molding, to form an integral assembly the other plate being splined or , otherwise secured to a shaft. The pocket plate (78) has strut pockets (80) disposed about the axis of the hub (72). The notch plate (84) has recesses (110) at angularly spaced positions about the axis. Struts (82) pivotally anchored in the strut pockets (80) engage the notch plate recesses (110) to effect one-way torque transfer between the plates (78 84).
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 February 23, 1999 and granted September 16, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 23, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 23, 2021.
- 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.