Continuous mold thermo forming
CA 1058817 A · Owner: B.F. Goodrich Company (The) · Inventors: Rinker, William R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for the continuous forming of molded plastic sheet from granular thermoplastic materials directly from granular thermoplastic material by plasticizing the granular material through a blender and an extruder, thence passing such material through a pair Or roller dies to form a sheet of material that is red directly to a continuously moving conveyor belt where the sheet is vacuum formed, thence trimmed and cut to size.
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 July 24, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 24, 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.