Device for corrugating sheet material
CA 1188933 A · Owner: Nauchno-Issledovatelsky Traktorny Institut · Inventors: Dunaev, Viktor P.; Kuzin, Anatoly I.; Dubrovsky, Evgeny V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A device for corrugating a sheet material with forming staggered cut corrugations. The device comprises at least two punches adapted for reciprocating motion on both sides of the sheet material in the plane perpendicular to the plane of the material. The punches are also adapted for reciprocating motion over the surface of the material in the plane perpendicular to the direction of its feeding. The device is provided with dies disposed on both sides of the punches in the direction of the material feeding, with a clearance being not less than the thickness of the material. The dies are also adapted for reciprocating motion relative to the punches in the plane …
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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 June 18, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 18, 2002.
- 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.