Drive motor for camera lens assembly
CA 1306127 C · Owner: Maruyama, Shigehisa · Inventors: Maruyama, Shigehisa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The coils of the stepping motor are disposed on the outer periphery of stepped section of a stationary tube section of the lens assembly in a manner to define a stator yoke. The inner surface of the stepped section is provided with a helicoid gear which cooperates with a correponding gear formed on the outer periphery of the rotatable front tube section of the lens assembly. The rotor magnet is secured on the inner periphery of a rearwardly extending flange-like section which encloses the stator yoke.
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 August 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 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.