Power transmission device, lens barrel, and image pickup apparatus
Patent 6927921 Issued on August 9, 2005. Estimated Expiration Date: 
June 16, 2024. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 16, 2024. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesLens barrel Multi-motor camera for normal and trimming photography having variable focal length photographing lens and finder and variable illuminating angle flash device Camera Zoom lens barrel with focusing path and focal length switching path Lens barrel Patent #: 6490097 InventorAssigneeApplicationNo. 10869440 filed on 06/16/2004US Classes:359/696, Motor driven359/697, Condition responsive359/699, Having cam device396/60, PSEUDO ZOOM359/701, Cam ring type or zoom ring type359/694Adjusting mechanismExaminersPrimary: Mack, RickyAttorney, Agent or FirmForeign Patent References
International ClassG02B015/14AbstractA multiplying mechanism is arranged between a drive source and a mechanism that transmits a rotary output from the drive source to a driven portion. A rotation information detecting unit that outputs rotation information is rotated in synchronism with the multiplying mechanism. | |
