Ultrasonic driving device
CA 1292267 C · Owner: Honda, Keisuke · Inventors: Honda, Keisuke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the present invention a stator consists, of a piezoelectric vibrator having divided electrodes on its one end or two end, alternative current voltage is applied to each of the divided electrodes of the one end and one electrode or each of the divided electrodes of the other end of the stator and a, member to driven is composed on the end or side portion of the stator. The member is reversibly driven by reversible circumferential progressive wave arisen on the end and side portions.
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 November 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 19, 2008.
- 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.