Multi-strand bobbin winding apparatus
CA 2035946 A1 · Owner: Haehnel, Rudolf H. · Inventors: Haehnel, Rudolf H.; Haehnel, Rudolf H.; Schartel, Ronald S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus winds multiple strand ends on a bobbin strands of the ends forming a band. A pair of metering wheels accept said plurality of strand ends from tensioned supply spools and equalize their lengths. The metering wheels are rotatable on angularly inclined axes such that the band proceeds on a helical path. A rotation sensor on the metering wheels senses the speed of the band. A threading assist clamp is mounted for helical displacement on a threaded crank arm for placing the strands on the metering wheels as a group the, clamp being removable from the crank arm to accomplish threading downstream of the metering wheels. A traversing mechanism and bobbin drive wind the band on the …
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 February 7, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 7, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 7, 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.