Overrunning alternator decoupler pulley with bare wire spring and grease lubrication
CA 2491230 C · Owner: Antchak, John R. · Inventors: Antchak, John R.; Jansen, Christian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A decoupler assembly (20) is provided for allowing an alternator to be rotatably driven by a serpentine belt (14) in an engine of an automotive vehicle and for allowing the speed of the belt to oscillate relative to the alternator. A hub is fixedly carried by a drive shaft (15) from the alternator for rotation therewith. A pulley (50) is rotatably journaled to the hub by a ball bearing member (55). The ball bearing member includes lubricant for minimizing frictional wear therein. A bare helical clutch spring (71) is , operatively coupled between the hub and pulley for transferring rotational movement from the pulley to the hub during acceleration of the pulley relative to the hub by …
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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 July 25, 2003 and granted June 25, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 25, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 25, 2025.
- 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.