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Canadian application, no grantCanada

Mechanically compliant mount in a disk stack assembly

CA 2021357 A1 · Owner: Pyke, Neil R. · Inventors: Pyke, Neil R.

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 disk stack assembly (21) in which a compliant interface (25) is provided between the disk stack (21) and the rotary mount (13) therefor, to accommodate limited radial displacement without slippage between mating parts of the interface, for the purpose of accommodating dimensional changes resulting from temperature differences and or differing thermal coefficients of expansion among the parts of the disk stack assembly (21), during periods of thermal cycling in the thermal environment of the disk drive.

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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

  • Filed July 17, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 17, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 17, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 17, 1990
GrantedNo grant recorded
Term endedJuly 17, 2010
Patent numberCA 2021357 A1
Classification (IPC)G11B17/00 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedJuly 17, 1990Term endedJuly 17, 2010

Sources & verification

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