Vertical dancer with constant torque
CA 2033094 A1 · Owner: Soubrier, Pierre · Inventors: Soubrier, Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dancer assembly (10) for feeding a web of film (12) having ports extending therefrom to a former (16) for folding the web of film (12). The apparatus includes a dancer (20) having a roller (26) located between two tracks (51, 53) that allow the roller (26) to move vertically along the tracks (51 53). The web of film (12), is fed around the roller (26) and vertically upwards toward the former (16). A quarter turn member (18) is further provided for changing the flow path of the film (12) from a substantially horizontal flow path to a substantially vertical flow path. And a member for moving horizontally, as a unit the dancer (20) and, quarter turn member (18) while maintaining a fixed …
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 21, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 21, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 21, 2012.
- 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.