Lens barrel
Patent 4763987 Issued on August 16, 1988. Estimated Expiration Date: 
November 19, 2006. 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.
November 19, 2006. 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 References 3834796 Coupling mechanism for the alternate manual and automatic adjustment of a varifocal objective Interchangeable lens and camera for use therewith Focus adjusting device of a camera Automatic and manual focusing exchangeable lens assembly Sound preventing means in sliding lens barrel and method of manufacture thereof Patent #: 4676600 InventorAssigneeApplicationNo. 06/932758 filed on 11/19/1986US Classes:359/826Sliding barrelsExaminersPrimary: Punter, William H.Attorney, Agent or FirmInternational ClassG02B 7/04 (20060101)Foreign Application Priority Data1985-11-20 JPAbstractA lens barrel has a lens barrel body, a movable lens unit accommodated in the lens barrel body and movable in a direction of an optical axis, a moving operational mechanism for moving the movable lens unit and a handling load change mechanism provided between the lens barrel body and the moving operational mechanism. The handling load change mechanism includes a moving operational member sliding contact portion and a lens barrel sliding contact portion which support handling loads through a fluid lubricant and a change operational member for changing the area of mutual contact by relative motion between the sliding portion. | |
