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US 7,566,136 B2Granted
Device for conveying a motion picture film
AssigneeArnold & Richter Cine Technik GmbH & Co.
InventorKlemens Kehrer
Life of this patent
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AssigneeArnold & Richter Cine Technik GmbH & Co.
InventorKlemens Kehrer
Estimating the term…
A device for conveying a motion picture film has at least one uniformly distributed row of perforations. An unwinding toothed reel, which continuously unwinds the motion picture film from a film supply reel, a winding toothed reel that continuously winds the motion picture film onto a film winding reel, and a film feeding mechanism, which intermittently conveys the motion picture film, engage inside said perforations. In order to switch the film conveyance from three to four perforation holes per film frame, the rotational speed of the film conveying motor connected to the winding toothed reel and to the unwinding toothed reel, is increased by 4:3, whereas the multiplication of the film feeding mechanism, of the movement gearing or of a movement gearing element can be altered by three or four perforation holes per film frame in order to adapt to the conveyance of the motion picture film.
A film transport device for a motion picture film which has a row of uniformly spaced perforations which are engaged by an unwinding toothed reel which unwinds the motion picture film continuously from a film supply spool, a winding toothed reel which winds up the motion picture film continuously onto a winding spool, and a gripper feed mechanism which conveys the motion picture film intermittently, said winding toothed reel and said unwinding toothed reel moving the motion picture film with one of three and four perforation holes per film transport step, wherein a film feed mechanism of a plurality of different film feed mechanisms is usable for conveying the motion picture film by one of three and four perforation holes per film transport step.
Dependencies are inferred from the claim text.