Bellows actuator
CA 2080074 C · Owner: Immega, Guy · Inventors: Immega, Guy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bellows actuator has at least one bellows chamber comprising at least three chamber segments arranged around an axis. Each of the chamber segments forms a radially outwardly extending protrusion comprising four chamber wall portions,which merge with one another along fold lines which extend peripherallyand radially of the bellows chamber and converge radially outwardly to meet at radially outermost apexes of the chamber segments. The bellows actuator is expansible and contractible along the axis by flexure of the wall portions relative to one another about the fold lines in response to pressure changes within the bellows chamber.
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 7, 1992 and granted August 2, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 7, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 7, 2014.
- 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.