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Expired Canadian patentCanada

Tape loading apparatus for use in a recording and/or reproducing apparatus of the rotating head kind

CA 1250951 A · Owner: Sony Corporation · Inventors: Shimizu, Osamu

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A tape loading apparatus in which a tape is extracted from a tape cassette and wound around a rotary head drum by a pair of tape guide blocks. The tape guide blocks are moved along a pair of guide rails arranged around both sides of the rotary head drum by being driven through a pair of ring gears. At least one of the guide rails is inclined with respect to a plane perpendicular to the axis of the rotary head drum in order that the pair of tape guide blocks have a level difference at the tape-loaded positions thereof. A parallel movement mechanism is provided for moving at least one of ring gears along the axis of the rotary head drum so that the level relationships between the tape guide …

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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 March 7, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 7, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 2, 1984
GrantedMarch 7, 1989
Term endedMarch 7, 2006
Patent numberCA 1250951 A
Classification (IPC)G11B15/66 +1 more

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedMay 2, 1984Patent grantedMarch 7, 1989Term endedMarch 7, 2006

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.