Apparatus for constructing a pin seam in a fabric having multiple machine direction yarns
CA 2212253 A1 · Owner: Lee, Henry J. · Inventors: Lee, Henry J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A shed formation device with a frame assembly having at least two harnesses mounted for movement in the frame. Each harness includes a plurality of heddles through which cross machine direction (CMD) yarns are passed. The existing CMD yarns of the fabric pass over an out-feed bar mounted to the frame assembly as they exit the heddles. A replacement CMD yarn supply provides replacement CMD yarns to the heddles for reweaving with the machine direction (MD) yarns to form seam loops and finished fabric ends. The replacement CMD yarns pass over an in-feed bar mounted to the frame assembly, prior to passing through the heddles. The harnesses are manipulated to form an unweaving shed 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
- Filed July 31, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 31, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 31, 2019.
- 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.