Magnification change mechanism

Details Magnification change mechanism Magnification change mechanism

1977-06-20

1979-01-23

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Original moves continuously

355 8, 355 11, 355 60, 355 65, G03B 2748, G03B 2750, G03B 2770

Patent

active

041358120

ABSTRACT:
Optical projection apparatus utilizing a pulley and cable mechanism for positioning optical components thereof which comprises a fixed pulley means, translatable pulley means and cable means entrained about the foregoing means. A clutch is provided to selectively preclude rotational movement of the fixed pulley means while translational movement is imparted to the translatable pulley means to thereby effect repositioning of the translatable pulley means relative to the fixed pulley means. An optical component fixed for movement with the translatable pulley means and an optical component fixed for movement with the cable can thereby be repositioned relative to each other by effecting translational movement of the translatable pulley means while simultaneously preventing rotational movement of the fixed pulley means. With rotational movement imparted to the fixed pulley means the optical components move either in the same direction or in opposite directions depending upon the manner in which the cable is wrapped about the translatable pulley means.

REFERENCES:
patent: 3614222 (1971-10-01), Post et al.
patent: 3884574 (1975-05-01), Doi et al.

Affiliated with

Also associated with

Rating

Magnification change mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnification change mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnification change mechanism will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2270751