Heavy-structure moving mechanism
CA 2211310 C · Owner: Isozaki, Toshiaki · Inventors: Akimoto, Kazuyuki; Hirakawa, Hajime; Ogiwara, Ryotaro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A moving mechanism is provided for balanced support of a weight of a heavy structure to be moved, thereby efficiently maintaining horizontal stability of the, heavy structure to be moved. The moving mechanism comprises a field of a stadium, a skirt-shaped seal member provided on a peripheral edge of a bottom face of the, field, a plurality of wheel mechanisms capable of up and down movement by a hydraulic cylinder and provided in appropriate locations on the bottom face an air, compressor provided in an appropriate location on the bottom face a , differential-, pressure detector for detecting oil pressure of the hydraulic cylinder and a , controller, capable of controlling an amount of …
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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 July 22, 1997 and granted November 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 22, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 22, 2019.
- 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.