Apparatus and method of extrusion
CA 1263209 C · Owner: Peoples, Clarence A. Jr. · Inventors: Mccullough, Robert W.; Kapfer, Klaus; Talbott, Graham M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus and method are provided in a system for continuously feeding disparate materials into a compounding extruder for the inline sheet extrusion of a highly filled thermoplastic material having at least about 65 percent by weight of filler. The apparatus and method of the present invention are particularly suitable in conjunction with the continuous lamination of the inline sheet extruder product with carpet and involve the steps of con-, tinuously feeding disparate materials to a powered extrusion means of the twin screw compounding type, wherein the extrusion means form a blend consisting essentially of a highly filled thermoplastic polymeric material having at least about 65 weight …
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 November 28, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 28, 2006.
- 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.