Electronic timepiece
CA 1311364 C · Owner: Seiko Epson Corporation · Inventors: Miyazawa, Osamu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for providing continuous hand movement in analogue electronic timepieces driven by discrete timepiece movement. Energy storage means is coupled to the intermittent driving mechanism and control means continuously releases the stored energy. A linkage means couples the energy storage and control means so that continuous rotation drive for the timepiece hands is achieved. Energy storage means comprising either a hairspring or a driving magnet is described with the control means comprising viscous fluid or a magnetic pendulum escapement gear.
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 December 15, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 15, 2009.
- 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.