Method for forming a workpiece by flow-forming
CA 2275559 A1 · Owner: Kostermeier, Karl-Heinz · Inventors: Kostermeier, Karl-Heinz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for working or forming a workpiece by flow-forming has particular application to the manufacture of internal teeth on the workpiece. A , cup-shaped preform or blank is axially-fixed against a tool chuck and is pressed by, means of at least one rolling body onto said tool chuck and then the blank is, rotated relative to the rolling body. The at least one rolling body at the , start of, forming, at the open end of the blank is pressed against the cylinder wall area, thereof, and in axial relative movement is guided in forming contact over the cylinder, wall area to the base of the blank.
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 18, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 18, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 18, 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.