Disk recording and/or reproducing apparatus
CA 1324662 C · Owner: Osato, Mamoru · Inventors: Osato, Mamoru; Ota, Keiichi; Tanaka, Tooru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A disk recording and/or reproducing apparatus performs recording information on and/or reproducing information from a disk-like recording medium within a sealed receptacle by the use of a head. In the apparatus an optical encoder for detecting positions of the head with respect to the disk-like recording medium has such a scale plate as to be swingable on the arm shaft of a head arm together with the head arm, as to have scale marks engraved in the radius direction of the arm shaft and as to consist, of a single member in whole so that a trouble such as the, head is off the track dut to a thermal influence and so forth, never occurs.
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
- Granted November 23, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 23, 2010.
- 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.