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US 4,050,642 AGranted
Winding or rewinding film
AssigneeMitsubishi Jukogyo Kabushiki Kaisha
InventorsTakuma Katsumata, Koji Kato, Hisao Kishigami, Noriyasu Kuroda
Life of this patent
Estimating the term…
Abstract
A method and apparatus for winding or rewinding a film wherein a pressurized jet of air is directed onto a surface of an unsupported portion of the film being wound or rewound. The air jet is elongated transversely of the length of said film. Simultaneously with the application of the air jet to the film the air impinging on the surface of the film is collected by suction.
Claims1
Apparatus for winding or rewinding a film comprising:
- a spool;
- a roll positioned adjacent said spool for guiding film being wound or rewound on the spool;
- means for directing pressurized air against a surface of the film located between said spool and the guide roll and for collecting said air by suction on the same side of the film as said surface, said means including at least one nozzle formed to direct onto said film surface, and beyond the edges thereof, a jet of air which is elongated transversely of the length of said film.
Dependencies are inferred from the claim text.