Method and apparatus for folding container rims
CA 1064213 A · Owner: Brown, Gaylord W. · Inventors: Brown, Gaylord W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for folding lips or rims of plastic containers provided on individual containers of a stack of nested containers comprising a rim folding roller having a plurality of spiral rim folding grooves therein for receiving and folding the heated rims, the rim folding roller being angularly offset relative to the axis of the stack such that the portions of the grooves receiving the rims lie in planes perpendicular to the axis of the stack.
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
- Granted October 16, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 16, 1996.
- 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.