Actuator
CA 2108109 A1 · Owner: Prime Actuator Control Systems Limited · Inventors: Calvert, Michael Arnold; Shrive, Christopher Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An actuator for converting linear motion into rotational motion comprises a pressure chamber for receiving a working fluid, an actuator housing having a longitudinal slot provided therein, a yoke frame provided within the housing a shaft passing through the longitudinal slot into the yoke frame, a thrust pin mounted on the shaft within the yoke frame, return means for countering working fluid pressure and an override device which allows forces stored within the actuator to be released in the event of failure of the actuator.
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 October 8, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 8, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 8, 2015.
- 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.