# US 8,771,588 B2 · Device for blowing gas onto a face of traveling strip material

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- Number: US 8,771,588 B2
- Document ID: US8771588B2
- Status: Granted
- Kind: B2
- Application number: 12/988,614
- Filed: 2009-05-07
- Published: 2011-02-10
- Granted: 2014-07-08
- Earliest claimed: 2008-05-13
- Assignees: CMI Corporation
- Applicants: Stéphane Langevin; Patrick Dubois
- Inventors: Stéphane Langevin; Patrick Dubois
- Web page: https://patentgrep.com/patent/US8771588B2

## CPC

- F15D 1/00: Influencing flow of fluids
- C21D 1/613: Gases; Liquefied or solidified normally gaseous material
- C21D 1/667: for spray quenching
- C21D 9/46: for sheet metals
- C21D 9/5735: {Details}
- F26B 13/007: {Treating a particular portion of the web or plate, e.g. the edge}
- F26B 13/108: {using one or more blowing devices, e.g. nozzle bar, the effective area of which is adjustable to the width of the material}
- B21B 45/004: {Heating the product}
- B21B 45/0209: {Cooling devices, e.g. using gaseous coolants}
- C21D 9/63: the strip being supported by a cushion of gas
- Y10T 137/8376: Combined
- Y10T 137/8593: Systems
- F15D: FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- C21D: MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING (surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by this subclass C23F17/00; unidirectional solidification of eutectic materials or unidirectional demixing of eutectoid materials C30B)
- F26B: DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM (drying devices for combines A01D41/133; racks for drying fruit or vegetables A01F25/12; drying foodstuffs A23; drying hair A45D20/00; body-drying implements A47K10/00; drying household articles A47L; drying gases or vapours B01D; chemical or physical processes for dewatering or like separating liquids from solids B01D43/00; centrifugal apparatus B04; drying ceramics C04B33/30; drying yarns or fabrics in association with some other form of treatment D06C; drying frames for laundry without heating or positive air circulation, domestic laundry-or spin-driers, wringing or hot pressing laundry D06F; furnaces, kilns, ovens F27)
- B21B: ROLLING OF METAL (auxiliary operations used in connection with metal-working operations covered in B21, see B21C; bending by rolling B21D; manufacture of particular objects, e.g. screws, wheels, rings, barrels, balls, by rolling B21H; pressure welding by means of a rolling mill B23K20/04)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A device for blowing gas on a face of traveling strip material, comprising at least one hollow box having its wall fitted with a plurality of blow orifices, thereby enabling gas to be directed towards said face of the strip material. The hollow box is also fitted laterally on at least one side thereof relative to a midplane (Q) perpendicular to the plane in the strip with a movable shutter member having the function of selectively shutting some of the blow orifices. In order to adapt the width of the blow zone to the width of the corresponding strip material, said movable shutter member has an edge adjacent to the inside surface of the wall fitted with the blow orifices, and an edge adjacent to a side wall of the hollow box.

## Claims

### Claim 1

A device for blowing gas on a face of traveling strip material, the device comprising:
at least one hollow box defined by at least one side wall and a wall facing towards a corresponding face of the strip material fitted with a plurality of blow orifices enabling gas to be directed towards said face of the strip material,
wherein the hollow box is also fitted laterally on at least one side thereof relative to a midplane (Q) perpendicular to a plane in the strip with a movable shutter member having a function of selectively shutting some of the blow orifices in order to adapt a width of the blow zone to a width of a corresponding strip material,
wherein said movable shutter passes through a slot that extends through a side wall of the hollow box, such that said movable shutter is movable, via said slot, in translation in a lateral direction in a vicinity of and parallel to the inside surface of the wall fitted with the blow orifices.

### Claim 2 (depends on 1)

The gas blow device according to claim 1, wherein the edges of the movable shutter member are and remain essentially parallel to the travel direction of the strip.

### Claim 3 (depends on 1)

The gas blow device according to claim 1, wherein the movable shutter member is a flap that is rigid in its plane.

### Claim 4

A device for blowing gas on a face of traveling strip material, the device comprising:
at least one hollow box having its wall facing towards the corresponding face of the strip material fitted with a plurality of blow orifices enabling gas to be directed towards said face of the strip material,
wherein the hollow box is also fitted laterally on at least one side thereof relative to a midplane (Q) perpendicular to a plane in the strip with a movable shutter member having a function of selectively shutting some of the blow orifices in order to adapt a width of the blow zone to a width of a corresponding strip material, said movable shutter member having an edge adjacent to an inside surface of the wall fitted with the blow orifices, and an edge adjacent to a side wall of the hollow box, and
wherein the movable shutter member is a deformable flap that bears against the inside surface of the wall fitted with the blow orifices and against the inside surface of a side wall of the hollow box.

### Claim 5 (depends on 2)

The gas blow device according to claim 2, wherein the flap constituting the movable shutter member is guided in its movement by slideways in which wheels coupled to said flap travel.

### Claim 6 (depends on 2)

The gas blow device according to claim 2, wherein the shutter member is moved from one position to the other by the action of mechanical and/or electrical and/or hydraulic means, such as actuators or rack systems.

### Claim 7 (depends on 1)

The gas blow device according to claim 1, wherein the hollow box is fitted on both sides thereof with respective movable shutter members.

### Claim 8 (depends on 1)

The gas blow device according to claim 1, comprising two hollow boxes between which the strip material is to travel so that the blown gas is applied simultaneously to both faces of the traveling strip, wherein each of the two hollow boxes is fitted with at least one movable shutter member, the movable shutter members facing each other.

### Claim 9 (depends on 1)

The gas blow device according to claim 1, having a plurality of movable shutter members with the individual movements thereof being controlled by a common central unit.

### Claim 10 (depends on 1)

The gas blow device according to claim 1, in which the blow orifices are constituted by tubular nozzles projecting at least in part outside the corresponding wall of the hollow box, wherein the movable shutter member is arranged to shut off selectively the inlets of some of the tubular nozzles.

### Claim 11 (depends on 1)

The gas blow device according to claim 1, in which the blow orifices are constituted by holes through the corresponding wall of the hollow box, wherein the movable shutter member is arranged to shut off selectively the inlets or the outlets of some of the holes.