Method and apparatus for precisely driving film material
CA 2105476 A1 · Owner: Baffo, Mario · Inventors: Baffo, Mario
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for precisely advancing film (24) material between two rollers includes a driven roller (22) having a medium hardness rubber surface and a non-driven hard surfaced roller (12) which contacts precision surfaces (13) at either end of the driven roller (22) to accurately control the spacing between the two rollers. The non-driven roller (12) is urged against the driven roller precision surfaces by a spring force (16) and causes the rubber, of the driven roller to compress when film material is in an operative position between the roller pair.
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 January 15, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 15, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 15, 2014.
- 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.