Method of forming variable cross-sectional shaped three-dimensional fabrics
CA 2089527 C · Owner: Mohamed, Mansour H. · Inventors: Zhang, Zhong-Huai; Mohamed, Mansour H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method of weaving a variable cross-sectional shaped three-dimensional fabric which utilizes different weft yarn insertion from at least one side of the warp layers (X) for selectively inserting weft yarns (Y1,Y2) into different portions of the fabric cross-sectional profile defined by the warp yarn layers (X) during the weaving process. If inserted from both sides of the warp layers (X), the weft yarns (Y1,Y2) may be inserted simultaneously or alternatively from each side of the warp yarn layers (X). The vertical yarn (Z) is then inserted into the fabric by reciprocation of a plurality of harnesses (11a,11b,12a,12b) which separate the vertical yarn (Z) into a plurality of vertical yarn …
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 August 29, 1991 and granted May 19, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 29, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 29, 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.