Single mass dual frequency fixed delayed resonator
CA 2181244 C · Owner: Olgac, Nejat · Inventors: Olgac, Nejat
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Vibrations are dampened by determining two principal frequencies of excitation for the structure and coupling thereto a damping member to produce an absorber. The spring damper characteristics of the absorber are determined at these frequencies and the displacement of the damping member is monitored. The monitored displacement of the damping member is processed together with the spring damping characteristics of the absorber to output a signal. This produces two frequencies of vibration in the damping member substantially equal to the determined frequencies of excitation and thereby produces a resonance of the damping member at the determined frequencies of excitation. The resonance 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
- Filed September 6, 1995 and granted November 21, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 6, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 6, 2017.
- 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.