Method and apparatus for opening a sliver
CA 1270112 C · Owner: Allied-Signal Inc. · Inventors: Rhett, Robert P.; Shealy, James B.; Girvan, Edward D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method and apparatus are provided for opening a sliver for dispersion in staple. The method features continuously tearing, without compression the sliver into, a plurality of filament bundles each of a smaller, cross section than that of the sliver. The apparatus features a plurality of points mounted for rotation about a common axis, means for feeding the sliver at a first speed into contact with one of the points, and means for rotating the points at a surface speed at least 290 times faster than the first speed to successively tear the sliver into filament bundles.
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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
- Granted June 12, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 12, 2007.
- 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.