Storage device utilizing flexible magnetic disks
CA 1072206 A · Owner: International Business Machines Corporation · Inventors: King, Francis K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A magnetic storage device having a stack of spaced flexible magnetic disks and an access arm carrying a magnetic transducer moveable between adjacent disks in the stack for accessing the disk surfaces. The access arm is blunt on one side edge and is sharp on the other side edge and increases gradually in thickness from the sharp edge to a position of maximum arm thickness adjacent the blunt edge at which the magnetic transducer is embedded in the arm. The disks rotate so as to move across the arm from the sharp edge toward the blunt edge, and the disks thus closely follow the surfaces of the access arm and particularly the surface of the transducer.
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 February 19, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 1997.
- 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.