Device for forming a constriction on the open end zone of a metal can
CA 2063863 A1 · Owner: Brilman, Gerrit Willem · Inventors: Roeterdink, Johan Willem; Brilman, Gerrit Willem
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
X Sch/EN/122p, TDV, ABSTRACT, A device for forming a constriction on the open end zone of a metal can with a cylindrical body comprising:, (1) a support member for supporting the bottom of a can and for pushing displacement thereof in axial direction:, (2) an annular anvil placed coaxially of this support member, on the side of which facing the support member an internal modelling surface is present which in the direction away from the support member has a form adapted to the desired shape of the constriction; and (3) a freely-rotating roller having a form adapted to the shape of the modelling surface, which roller can press the end zone of a positioned can forcefully against the modelling …
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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 March 24, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 24, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 24, 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.