Pressure activated film tensioner

Details Pressure activated film tensioner Pressure activated film tensioner

1990-12-19

1991-12-17

Hayes, Monroe H.

Optics: motion pictures

Gates

With pressure rollers

352224, 352227, G03B 148

Patent

active

050730223

ABSTRACT:
The disclosed invention provides a means for controlling film flatness at r interfaces in the aperture where the film is used as an imaging medium between film holder plates, such as aperture plates. The film is held flat by lateral tension applied outward in all directions from the center portion of the area of the film being viewed by rubberized type O-rings in grooves on each of the aperture plates being clamped against the film by various clamping direct transverse pressure means. The lateral tension is caused by the stretch of the O-ring outward from the center of the aperture by the shape of grooves in the plates constraining any inward movement but providing bias movement of the O-rings outward.

REFERENCES:
patent: 1373925 (1921-04-01), Wenderhold
patent: 4835555 (1989-05-01), Maxwell

Affiliated with

Also associated with

Rating

Pressure activated film tensioner does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-832763