Packaged strain actuator
CA 2181598 C · Owner: Crawley, Edward F. · Inventors: Lundstrom, Mark E.; Crawley, Edward F.; Moore, Jeffrey W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A modulator actuator assembly includes one or more plates or elements of electro-active material (71 73) bonded to an electroded, sheet to form a card. The card is sealed and may itself constitute a practical device such as a vane, shaker, stirrer, lever pusher or sonicator, for direct contact with a solid or immersion in a fluid or may be bonded by a stiff adhesive to make a surface-to-object mechanical coupling of the plates through the sheet to a solid workpiece device, substrate, machine, sample or other article. The laminated assembly supports the plates and provides a bending stiffness such that the tin plates do not deform to a breaking point and a mechanical stiffness such that, …
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 January 27, 1995 and granted March 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 27, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 27, 2017.
- 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.