Piezoceramic coupler control circuit
CA 1237490 A · Owner: General Electric Company · Inventors: Basch, John G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A control circuit for supplying power to a piezoceramic coupler includes a controllable oscillator for supplying an output signal having the resonance frequency of the piezoceramic coupler and an amplitude control circuit to control the amplitude of the output signal of the piezoceramic coupler. Switching devices are also included to control interruption of the application of the drive signal to the piezoceramic coupler.
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
- Granted May 31, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 31, 2005.
- 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.