Process and apparatus for laminating and shaping foam
CA 1341146 C · Owner: Avery, Michael L. · Inventors: Solomon, Archie; Avery, Michael L.; Elliott, George M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A machine for laminating fabric 123 to open cell cushion foam 124 while forming design lines in the foam is dis-closed. The machine comprises a top hollow die 21 having perforations 38 and a complementary, hollow bottom die 54 which also has perforations 130. Hot melt adhesive 125 is interleaved between fabric 123 and foam 124. Top die 21 is preheated to just below the melt point of adhesive 125; then dies 21 and 54 are closed against the layered workpiece, with top die 21 contacting the face of fabric 123. A shot of superheated steam e.g. at 80, psig and 700°F. is ejected from perforations 38 and 130 to melt adhesive 125. Then a vacuum is applied to the perforations to pull ambient air …
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, 2000. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 28, 2017.
- 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.