Plastic tube with solid cross-ribs on the outer surface, a mouldingdevice therefor; installation comprising such a device and a method for moulding a plastic tube
CA 1303518 C · Owner: Hansen, Finn Thor · Inventors: Jarvenkyla, Jyri; Hansen, Finn Thor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Plastic tube with solid cross-ribs on the outer surface a, moulding device therefor; installation comprising such a device and a method for moulding a plastic tube. The invention relates to a tube having solid transverse ribs at the outside and a smooth inner surface in which at least one end has a smooth outer surface having a wall thickness which may be chosen free, i.e. greater than equal, to or smaller than the smallest thickness of the tube between the ribs. The invention also relates to a device for moulding a tube according to the invention, an installation having such a device and a method for producing a tube using such an installation which includes a device according to 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 June 16, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 2009.
- 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.