Procedure for production of vehicle wheels
CA 2066285 A1 · Owner: Norsk Hydro A.S. · Inventors: Berg, Otto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vehicle wheel made of light metal and consisting of a hub and a rim surface is produced by a process comprising the, steps of producing a substantially discshaped crude billet from an extruded, bolt or a similar rounded solid metal body, heating of a crude billet to a hot rolling temperature and subsequently, orbitally rolling the crude billet so as to obtain a rotationally symmetric, preformed material splitting off of the, outer portion of the preformed material and afterwards forming a rim surface by spinning the outer, split-off rim, portion. As an alternative the preformed, material after orbital rolling and before splitting can be compressed or, cold forged in order to obtain a …
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 April 16, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 16, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 16, 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.