Mechanisms transmitting motion to film-strip feed; Mechanical linking of shutter and intermittent feed

Introduced: September 1968

Last revised: January 2006

Full Title

Projectors or projection-type viewers; Accessories therefor > Details > Details specially adapted for motion-picture projection > Driving mechanisms > Mechanisms transmitting motion to film-strip feed; Mechanical linking of shutter and intermittent feed

Classification Context

Section:: PHYSICS
Class:: PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
Subclass:: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR

2 direct subcodes

Child Classifications

Navigate with arrow keys, Enter to open

G03B 21/46 affording adjustment for framing
G03B 21/48 for altering frame speed; for regulating constancy of film speed