Automatic film transport device

Details Automatic film transport device Automatic film transport device

1981-02-18

1982-12-07

Griffin, Donald A.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

354213, 354217, 242188, 242201, 226 33, G03B 104, G03B 1736, B65H 2532

Patent

active

043623700

ABSTRACT:
An automatic film transport device for use in cameras has a first function of (i) automatically completely unrolling an unexposed film from a film case or magazine and winding it on a take-up reel or spool and a second function of (ii) automatically rewinding the film into the film case or magazine by a predetermined length (corresponding to the width of one frame) each time one exposure has been completed. Therefore, even when one erratically opens the camera back when the film is still loaded in the camera, the exposed frames have been already rewound into the light-shielded film case or magazine, so that they may be prevented from being ruined or reexposed. In addition to the first and second functions as described above, the automatic film transport device may be provided with a function or capability of counting and displaying the number of all exposable frames on the film wound on the take-up reel or spool or the remaining number of exposable frames.

REFERENCES:
patent: 4251148 (1981-02-01), Stemme et al.

Affiliated with

Also associated with

Rating

Automatic film transport device does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1899996