Fiber entry whip reduction apparatus and method therefor
CA 2318906 A1 · Owner: Chang, Chester H. · Inventors: Watson, Johnnie E.; Chang, Chester H.; Roberts, Kenneth W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and method for reducing or preventing fiber (13) entry whip as the loose end of a fiber (13) being wound on a spool (12) enters a fiber winding device (41). A fiber winding device (41) including a spool winding entrance (26), a winding spool (12) and a fiber whip shield (11) substantially surrounding the winding spool (12). A fiber entry whip reducer positioned in front of the fiber winding device includes at least one pulley (17) and a guide channel (28a, 28b) including a straight entry section (28a) and a curved section (28b) leading to the fiber winding device (41). The guide channel (28a, 28b) is formed and positioned such that the loose end of the fiber (13) is …
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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
- Filed April 7, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 7, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 7, 2021.
- 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.