Hydraulic actuator
CA 2406268 A1 · Owner: Gjedebo, Jon Grude · Inventors: Gjedebo, Jon Grude
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The aim has been to provide a simplified and improved hydraulic actuator in the form of a hydraulic piston type cylinder (10) meant for use under water or in other environments, in which the actuator is exposed to elevated ambient pressure. The actuator comprises a force-exerting element in the form of a piston (14), forming a movable partition wall between two chambers (24 26). , This force-exerting element, the piston is driven in one of two opposite , directions when different pressures prevail in the two chambers (24 26). , According to the invention, each of the two chambers (24 26) are to allow , evacuation, as at least one chamber the first chamber (24), is to be provided with …
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 April 12, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 12, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 12, 2022.
- 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.