Method of manufacturing an anchor element from a strand of twisted steel wire
CA 2089038 C · Owner: Fines, Harold Douglas · Inventors: Fines, Harold Douglas; Herbst, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and an arrangement for manufacturing an anchor element from a strand of steel wires by spreading outer wires of the strand apart from the central wire of the strand to form expanded sections. For spreading apart the outer wires the strand is axially advanced, through a rotatably mounted spreading disc provided with a number of openings corresponding to the number of wires, wherein each individual wire is passed through one of the openings. Following the spreading disc in advancing direction spacer elements are mounted between the spread apart outer wires for fixing the outer wires in the spread apart position and forming the expanded sections. The spacer elements can be mounted in …
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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 February 8, 1993 and granted September 7, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 8, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 8, 2015.
- 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.