Machine for forming seam securing together adjacent roofing or wall panels, and roofing or wall panel structure formed thereby
CA 2277606 A1 · Owner: Sommerstein, Michael · Inventors: Sommerstein, Michael; Stellrecht, Ewald A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A machine forms adjacent edge portions of adjacent roofing or wall panels into a standing seam securing together the adjacent roofing or wall panels. A first gear wheel is mounted on an output shaft of a motor second and third gear wheels are mounted in driven engagement with the first gear wheel, fourth and fifth gear wheels are coaxially mounted to the second and third gear wheels, respectively, sixth and seventh gear wheels are mounted in driven engagement with the fourth gear wheel, eighth and ninth gear wheels are mounted in driven engagement with the fifth gear wheel, tenth nd eleventh gear wheels are mounted in driven engagement with the sixth and seventh gear wheels, respectively …
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 July 16, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 16, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 16, 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.