Efficient multi-directional active vibration absorber assembly
CA 2284793 A1 · Owner: Ivers, Douglas E. · Inventors: Ivers, Douglas E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An Active Vibration Absorber assembly (20 etc.) including a casing (24, etc.), a first tuning mass (32 etc.) supported relative to the casing (24 etc.) which is actively vibratable by a force generator (40 etc.) in a first , direction (along an A-A axis) a second tuning mass (32', etc.) supported relative to said casing (24, etc.) which is actively vibratable by a force generator (40', etc.) in a second direction (along axis B-B) generally orthogonal to the first direction, and a flexible member (26 etc.) flexibly , supporting the casing (24 etc.). In a first embodiment, the tuning masses (32, 32', etc.) are vibratable by a magnet and coil assembly within shakers (25, 25', etc.) and …
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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 January 23, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 23, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 23, 2020.
- 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.