Rotary cam driving apparatus for negative-angle forming die
CA 2345967 A1 · Owner: Matsuoka, Mitsuo · Inventors: Matsuoka, Mitsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention aims to eliminate the need for the timing adjustment of the air cylinder operation at the time of pressing operation and to simplify, the piping necessary for the air cylinder. The present invention provides a rotary cam driving apparatus for a negative-angle forming die comprising a lower die half having a supporting portion, for placing a sheet metal work and an upper die half to be lowered straightly downward onto the lower die half for forming the work an intrusion forming , portion, formed in the lower die half at an edge portion near the supporting portion inward, of a downward stroke line of the upper die half a rotary cam rotatably , provided, in the lower …
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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 May 4, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 4, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 4, 2023.
- 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.