Magnetic tape cassette having automatic brake
CA 1235488 A · Owner: Sony Corporation · Inventors: Meguro, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A magnetic tape cassette comprises a hollow casing formed with an access opening therein, tape guide columns and a pair of reel hubs rotatably mounted within the casing in spaced-apart relation to each other for supporting a magnetic tape wound thereon and defining a tape run adjacent to the opening. A lid is mounted pivotally on the casing between a closed position wherein it covers the opening thereby affording protection to the tape and an open, position wherein it uncovers the opening thereby exposing, the tape for cooperation with recording-reproducing apparatus. A brake member is mounted within the casing movably between a braking position wherein it locks the hubs against rotation …
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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 April 19, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 19, 2005.
- 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.