Pocketed spring units
CA 2626919 C · Owner: A Harrison (Bedding) Limited · Inventors: Clare, David; Spinks, Simon Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided a method and apparatus for the production of a pocketed spring unit. In one , embodiment, the method comprises the steps of: feeding a row of pre-compressed springs to , positions between upper and lower lengths of fabric or other material step-, wise advancing , said fabric or other material and said springs in a direction of an output of the apparatus, and , welding together the lengths of said fabric or other material at each stepwise advancement so , as to form a plurality of discrete pockets each containing a spring. An apparatus for carrying , out the method as disclosed.
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 September 15, 2006 and granted August 5, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 15, 2026.
- 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.