Method and apparatus for producing oriented plastic strap, and strap produced thereby
CA 2175147 C · Owner: Van Erden, Donald · Inventors: Van Erden, Donald; Enriquez, Manuel C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and method for producing an oriented plastic strap having a predetermined desired thickness and flatness characteristics for use in, connection with the strapping of packages or the like is disclosed. A sheet, workpiece is conducted into a nip defined between a pair of opposed milling and, stretching rollers wherein one of the rollers is rotated at a lineal surface velocity, which is greater than the lineal surface velocity of the other roller and the rollers, are rotated in opposite directions. One of the rollers effectively brakes or retards, one of the surfaces of the sheet workpiece while the other one of the rollers effectively accelerates the other one of 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
- Filed April 26, 1996 and granted August 3, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 26, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 26, 2018.
- 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.