Hydraulic governor device for use with a rotational shaft, and door assembly including the same
CA 2444509 A1 · Owner: Canimex Inc. · Inventors: Barriault, Patrick; Roy, Danny; Beaudoin, Francois
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hydraulic governor device for use with a rotational shaft of a door assembly for controlling a rotation of said rotational shaft. The device includes a, sleeve; first and second end coverings mounted respectively onto first and second ends of the sleeve so as to define an hydraulic flow path; a fluid substantially filling the hydraulic flow path; an input shaft extending through the, ends coverings and the chamber and being operatively connected to the rotational shaft of the door assembly; first and second pistons disks positioned, inside the chamber and mounted about the input shaft the pistons disks being, connected to each other and being slidably movable along the input shaft; 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 October 9, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 9, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 9, 2025.
- 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.