Apparatus and methods for making pile articles and improved pile articles made therewith
CA 2848543 C · Owner: Ultrafab, Inc. · Inventors: Wylie, Grant E.; Chernyak, Alexander Z.; Arvidson, Richard T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Filamentary materials, such as yarn (18) is wound a frame (28), provided by pairs of movable filaments or wires (35 38), about which the end of the spindle (22) rotates provides the turns (26) of the winding as the article having the winding is moved along a process path. Mechanically or hydraulically actuated pins (34) support the winding frame in a fixed position. The filaments of the frame may be provided by laterally spaced pairs (44 46) of filaments of weldable material.
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 July 15, 2005 and granted October 18, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 15, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.