Glass fiber bulk strand roving and method and apparatus for the manufacture thereof
CA 1293167 C · Owner: Klink, Jerome P. · Inventors: Klink, Jerome P.; Glaser, Hellmut I.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention describes a method and apparatus for producing a bulk strand roving comprising a multiplicity of strands with axially extending loops interengaged and entangled with cross-axially extending loops. The roving of the present invention is made by a process that uses a finger wheel (32) to form axially extending loops in strands and a spinner (36) downstream of the finger wheel. The looped strands from the finger wheel pass through a relatively unrestricted passage in the spinner which imparts a twist to such looped strands and, then through a relatively restricted outlet orifice (42) that is downstream of the outlet of the spinner. A back-up or puddling of the looped …
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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 December 17, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 17, 2008.
- 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.