Method of forming circularly bent articles, in particular wheel rims, from a straight metal profiled strip and apparatus for performing the method
CA 1082532 A · Owner: Holland Mechanics B.V. · Inventors: Damman, Cornelis C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of forming circular rims for bicycle wheels from metal profiledstrip material in which first strip pieces are cut to a length corresponding to the circumferential length of the rims curved end portions are formed on each strip piece and each strip, piece is introduced into a three-roll ring rolling apparatus. After the strip piece has been worked up to the trailing curved end portion thereof, the adjustable middle roll of the rolling apparatus is shifted a small distance towards the two outer rolls into a position corresponding with a substantially bending-free passage or the trailing curved end portion of the strip piece. The invention further relates to a pressing apparatus for …
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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 July 29, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 29, 1997.
- 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
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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.