초록 ▼

A Coanda effect nozzle includes first and second longitudinal airfoils mounted in spaced apart relationship generally transverse to the travel of the web. A mechanism is mounted between the first and second airfoils to define orifices adjacent each of the airfoils, so as to create first and second C

A Coanda effect nozzle includes first and second longitudinal airfoils mounted in spaced apart relationship generally transverse to the travel of the web. A mechanism is mounted between the first and second airfoils to define orifices adjacent each of the airfoils, so as to create first and second Coanda streams of air along the first and second airfoils, respectively. The first stream of air travels in a direction opposite to the travel of the second stream of air. The first and second streams of air travel generally parallel to the web.

대표청구항 ▼

In a system for floating a continuous traveling web by means of nozzle positioned generally transverse thereto, said system including a source of pressurized air fed to the nozzles, air exiting from the nozzles being divided into first and second Coanda air streams, the first stream traveling genera

In a system for floating a continuous traveling web by means of nozzle positioned generally transverse thereto, said system including a source of pressurized air fed to the nozzles, air exiting from the nozzles being divided into first and second Coanda air streams, the first stream traveling generally opposite in direction to the travel of the second stream with both streams traveling generally parallel to the direction of web travel, the improvement wherein a nozzle in the system comprises: (a) first and second, spaced-apart, longitudinal air foils disposed transverse to the direction of travel of the web; and, (b) a member located in the space defined between said first and second air foils, said member defining distal edges located in spaced relationship with respective edges of said air foils for thereby defining first and second longitudinal orifices for the discharge of said first and second air streams, and including openings defined by said member for introducing a predetermined air flow intermediate said first and second air streams, said air flow impinging upon said web to provide pressure for insuring movement of said web above the nozzle and out of contact with the nozzle.