Method and apparatus for improving spinning disk behavior using speed dependent clamping
CA 2246152 A1 · Owner: Renshaw, Anthony A. · Inventors: Renshaw, Anthony A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stress induction method can be used to increase the operational speed range of rotating disks such as industrial circular saws and computer disk drives. In this method, stresses are generated in the disk by producing displacements or tractions at the inner radius of the disk. The magnitude of the displacements or tractions depends on the rotation speed. For example, by allowing concentrated masses to rest along the inner radius of the disk in-plane stresses proportional to the square of the rotation speed are generated. This technique can double the maximum speed for hydrodynamically uncoupled disks and can increase the maximum speed of disks with substantial hydrodynamic coupling by an …
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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 August 27, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 27, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 27, 2020.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.