Magnetic disk cartridge
CA 1106968 A · Owner: Fujitsu Limited · Inventors: Kudo, Ryosuke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This application relates to improvements of a magnetic disc cartridge comprising: a support disc which carries at least one magnetic disc on its circumference; a magnetic disc housing case having an opening through which at least one magnetic head enters; a closure mechanism for covering said opening, and; a holding mechanism which holds said support disc down on a base member of said housing case. The improvements reside in that said support disc has at least one hole in its hub through which circulating clean air flows in, and that a cover for said hole is arranged cooperating with said closure mechanism so that said cover opens when said closure mechanism opens and closes when said …
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 August 11, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 1998.
- 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.