Advance in materials in cylinders of active-piston actuators
CA 2548858 C · Owner: Woydt, Mathias · Inventors: Audren, Jean-Thierry; D'Almeida, Oscar; Woydt, Mathias
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns an actuator including a linear active-material piston (2) and an internal sliding cylinder (7 7') comprising an outer cylinder (5, 5') in which the said sliding cylinder (7 7') is pre-constrained, a cylinder made of an anisotropic material featuring negative or essentially nil thermal expansion on at least one axis and positive or essentially nil thermal expansion on at least one other axis the other cylinder featuring a positive or essentially nil expansion coefficient.
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 June 1, 2006 and granted August 6, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 1, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.