Camshaft and method for its production
CA 1289776 C · Owner: Gkn Technology Limited · Inventors: Suter, Geoffrey Michael; Dawson, Ronald John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A camshaft for an internal combustion engine is produced as a tubular fabrication by assembling a plurality of initially circular cam rings 12 on a central tubular member 10, deforming the cam rings to a desired cam profile by pressing in die cavities 20-22 of a forming tool and then radially outwardly expanding the tubular member into the shaped cam profile rings by the application of internal fluid pressure to the tubular member 10. The shaped cam rings 12 are thereby secured against rotational and axial movement relative to the tubular member 10. Alternatively, the pressing of the cam rings to a desired cam profile may also deform the tubular member relative to the cam rings to such an …
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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
- Granted October 1, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 1, 2008.
- 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.