Process and apparatus for blowing continuous filament tow
CA 2043477 A1 · Owner: Street, Robert L. · Inventors: Street, Robert L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Continuous filament tow is partially deregistered preferably by passing over threaded rolls; and after being, partially deregistered, fully bloomed in an air-blooming mechanism. The air-blooming mechanism draws the partially deregistered tow into a turbulent air flow maximizing, bloom; and then carries the tow after blooming directly into a casing for formation of pillows, cushions or the like, articles. The process is simple and economical.
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 May 29, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 29, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 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.