Optical: systems and elements – Lens – With variable magnification
Reexamination Certificate
2006-06-19
2009-11-24
Thompson, Timothy J (Department: 2873)
Optical: systems and elements
Lens
With variable magnification
C359S819000
Reexamination Certificate
active
07623302
ABSTRACT:
A cam drive mechanism includes: a cylinder in which a cam groove is formed from one end face of an inner circumferential surface toward another end with a forming mold; a drive target object that comprises a cam follower to engage in the cam groove and is linearly driven along a rotational axis of the cylinder as the cylinder rotates; and a pressing member that presses the cam follower against a cam surface constituting a side surface of the cam groove. The cam surface is formed to have varying gradients so as to enable adjustment of an extent of displacement of the drive target object per unit of rotational angle by which the cylinder rotates and the cam groove is formed in a shape that allows the forming mold to be extracted from the cylinder through rotational extraction.
REFERENCES:
patent: 5062917 (1991-11-01), Zodrow
patent: 5995301 (1999-11-01), Higuchi et al.
patent: 6094534 (2000-07-01), Omiya
patent: A-05-119248 (1993-05-01), None
patent: A-09-049958 (1997-02-01), None
patent: A-09-243897 (1997-09-01), None
patent: A-10-031150 (1998-02-01), None
patent: A-11-084204 (1999-03-01), None
patent: A-11-218659 (1999-08-01), None
patent: A-2001-221941 (2001-08-01), None
Nikon Corporation
Oliff & Berridg,e PLC
Thompson Timothy J
LandOfFree
Cam drive mechanism, lens barrel and camera does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cam drive mechanism, lens barrel and camera, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cam drive mechanism, lens barrel and camera will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4102532