Device for making laminated arch corrugated structures
CA 1292667 C · Owner: Thompson Corrugated Systems, Inc. · Inventors: Thompson, Frederick H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for making laminated dual and multiple arch corrugated structures including a first unit for making single-face corrugated members formed of a corrugated member and an attached liner and a second unit for combining one or more single-face corrugated structures into a double-face structure. The subject invention includes a novel mechanism for laminating one or more portion of the single-face or double-face corrugated structures and/or for impregnating one or more of the members of the such structures with an impregnating substance. The subject improvements also reside in a novel hold down roll construction to prevent wrinkling of the edge portions of web members used in the …
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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
- Granted December 3, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 3, 2008.
- 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.