Monolithic accelerometric transducer
CA 2233374 C · Owner: Onera (Office National D'Etudes Et De Recherches Aerospatiales) · Inventors: Muller, Serge; Le Traon, Olivier; Janiaud, Denis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A monolithic transducer including a fixed portion (1e1) two movable massive , portions (2e1, 4e1) and a resonator (3e1) having ends secured to the movable portions, a flexible frame (5e1) surrounding the two movable portions and two , linking members (6e1, 7e1) connecting the frame (5e1) to the second movable portion (4e1) and the fixed portion (1e1). The frame forms a mechanical filter between the resonator and the fixed portion that is not exposed to resonator vibration. The overvoltage ratio of the resonator is not affected and the accuracy of the measurement provided by the transducer is increased. In a differential-output accelerometer, the position of the transducer (TAe1) 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 23, 1996 and granted April 23, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 23, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 23, 2018.
- 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.