Mechanical feedback control device for a redundant hydraulic actuator
CA 2363890 A1 · Owner: Abba, Andrea · Inventors: Abba, Andrea
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mechanical feedback control device for a redundant hydraulic actuator having two hydraulic cylinders operated by respective hydraulic valves and interposed between a fixed connection and a movable connection of the actuator; the device having an input lever connected to two feedback rods connected to the movable connection of the actuator, and a transmission lever which when, moved by the input lever, rotates a pin to activate two shafts controlling respective slides of the valves. The input lever, the transmission lever and the pin form a closed-loop structure for transmitting displacement to each of the shafts, so that each of the slides can be moved via two different kinematic chains.
Read the whole patent
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 November 28, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 28, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 28, 2023.
- 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.