Access and tracking device for optical disks
CA 2083244 A1 · Owner: Bec, Daniel · Inventors: Bec, Daniel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention concerns a device for accessing and following tracks on the surface of mobile media containing data optically readable and/or writable by a laser beam, the said device including at least one optical head made up of a rigid carriage which enables the laser beam to access the reading and/or writing track, of a lens rigidly linked to the rigid carriage and intended to focus the laser beam on the surface of the mobile data medium, of a return mirror linked rigidly to the rigid carriage and intended to direct the laser beam towards the lens, of at least one motor coil which allows movements of the carriage intended to focus the laser beam, and a mirror not fixed to 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 November 18, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 18, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 18, 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.