Train wheel structure of electronic timepiece
CA 1303366 C · Owner: Watanabe, Mamoru · Inventors: Watanabe, Mamoru; Sato, Mamoru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A train wheel of an electronic timepiece having more than two motors which drive hand wheels through individual train wheels includes a guide pipe driven into and fixed in a bottom plate in the timepiece. The first hand wheel driven by the rotor of the first motor through the first train wheel has a central shaft as its rotational axis. The central shaft of the first hand wheel is inserted into the guide pipe so as to be guided and supported by the inner surface of the guide pipe. The second hand wheel has a central pipe as its rotational axis. The central pipe of the second hand wheel has the guide pipe inserted therein so as to be guided and supported by the outer surface of the guide …
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 June 16, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 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.