Method and a device for altering of the angular velocity of a driven rotating media carrier
CA 2106305 A1 · Owner: Olsson, Lennart · Inventors: Olsson, Lennart
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and a device at a rotating media carrier in optical or magnetical recording and playback machines whereby a radial, displacement of at least one mass quickly and simply changes the angular velocity of the carrier, resulting in a considerably reduced access time to the information stored on the medium.
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 17, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 17, 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.