Photography – Having variable focal length of camera objective – Having focus operation
Reexamination Certificate
2011-08-30
2011-08-30
Pilkington, James (Department: 3656)
Photography
Having variable focal length of camera objective
Having focus operation
C359S694000, C359S696000, C359S823000, C359S827000, C074S089230, C074S424710, C074S424780
Reexamination Certificate
active
08009974
ABSTRACT:
A power transmission capable of regulating the disengagement of a nut part from a screw part, and the like are provided. The power transmission is constructed of a rotation shaft having a thread formed on a periphery thereof; a nut member capable of being opened and closed, the nut member having a thread engaged with the thread of the rotation shaft, and pinching the rotation shaft and moving as the rotation shaft is rotated; a regulating part enabling movement of the nut member by regulating opening of the nut member; and a regulation releasing part capable of releasing engagement between the nut member and the rotation shaft by opening the nut member.
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Extended European Search Report issued in corresponding European Patent Application No. 07290195.2, on Jun. 14, 2007.
English language translation of DE 101 60 587 A1.
Office Acton mailed form the Japanese Patent Office on Feb. 15, 2011 in the related Japanese patent application No. 2006-042455.
Diaz Thomas
Nikon Corporation
Pilkington James
LandOfFree
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