Magnetic disc memory apparatus incorporating temperature compensation
CA 1210859 A · Owner: Seagate Technology · Inventors: Ghose, Sanjoy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
OF THE INVENTION:, According to the subject invention the correction for, thermal mistracking may be achieved by the incorporation of a compensating plate in the carriage the plates', length and coefficient of expansion being selected to ify the off-track shift with temperature. Mistracking which varies from the outside to the inside track, i.e. there is a change in stroke length of the carriage with temperature, is compensated for by selecting a pulley material from a material having a coefficient of expansion directly related to the coefficient of expansion of the material of the disc. The result of a proper selection is that the change in size with ambient temperature of the disc is …
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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 September 2, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 2, 2003.
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Timeline
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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.