Split heddle
CA 2034362 A1 · Owner: Asten Group, Inc. · Inventors: Anderson, Larry D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A split heddle for controlling a yarn is disclosed. The heddle is particularly useful in automated seaming machines. The heddle is comprised of two blade like members. Each member has an aperture which is intersected on one side by a slot and on the other side by a groove. The members are superimposed with the apertures in alignment and the grooves opposite the slots. The unit is secured by laser spot or sonic, welding. After insertion of the yarn(s) in the aperture the, heddle is rotated 180° with respect to the yarn(s) and the yarn(s) is/are captured in the channel formed by the opposed grooves. -13-
Read the whole patent
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 January 17, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 17, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 17, 2013.
- 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.