Moment bender transducer
CA 2087762 C · Owner: General Electric Company · Inventors: Erickson, David Justa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A transducer includes a first and second spaced apart member, each member having a radiating surface for producing a wave of energy in a transmitting medium in response to a driving force, a plurality of containment devices coupled to each member and extending outwardly beyond at least one radiating surface for communicating the driving force to each member, and a corresponding plurality of driving devices respectively disposed within the containment devices for generating the driving force in response to a change in a predetermined dimension of the driving device. The distance between the members and corresponding distance between the radiating surfaces may be reduced for increasing the …
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 21, 1993 and granted April 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 21, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 21, 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.