Method and apparatus for controlling geometrically simple parallel mechanisms with distinct connections
CA 2080822 A1 · Owner: Duffy, Joseph · Inventors: Duffy, Joseph; Griffis, Michael W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system, method and apparatus for controlling via a closed-form, forward displacement computation the position and orientation, of a movable platform of a parallel mechanism. A movable platform is supported above a base platform by a plurality of parallel support legs such as linear actuators. The dimensions of the base platform and the movable platform, as well as the lengths of the support legs, are provided to a control system. The control system is operative to compute at least one closed-form forward displacement solution (51) of the geometry of polyhedron (an octahedron for the disclosed embodiments) formed by the movable platform the, base platform, and the support legs. The …
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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 May 1, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 1, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 1, 2013.
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Timeline
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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.