# US 2014/0151500 A1 · Device for intermediate fastening between an aircraft fuselage and an aircraft landing gear

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- Number: US 2014/0151500 A1
- Document ID: US20140151500A1
- Status: Published application
- Kind: A1
- Application number: 14/093,862
- Filed: 2013-12-02
- Published: 2014-06-05
- Earliest claimed: 2012-11-30
- Assignees: Airbus Operations GmbH
- Applicants: Airbus Operations S.A.S.
- Inventors: Daniel Bellet; Guillaume Gallant
- Web page: https://patentgrep.com/patent/US20140151500A1

## CPC

- B64C 25/20: mechanical
- B64C 25/04: Arrangement or disposition on aircraft
- B64C 25/10: retractable, foldable, or the like
- B64C 2025/125: {into the fuselage, e.g. main landing gear pivotally retracting into or extending out of the fuselage}
- B64C: AEROPLANES; HELICOPTERS

## Abstract

A device for intermediate fastening between an aircraft fuselage and an aircraft landing gear is provided. The device includes at least one semi-open support structure comprising a pair of webs, which are substantially parallel to each other. The webs comprise first support means intended to receive the main pivot shaft of the landing gear and second support means intended to receive the stay joint or joints of the landing gear. The device includes two support structures linked together by a central box structure. The central box structure includes a front wall, a rear wall and linking walls linking those two walls.

## Claims

### Claim 1

A device for intermediate fastening between an aircraft fuselage and an aircraft landing gear, the landing gear being adapted to pivot around at least one main shaft and to be hinged around at least one stay joint to enable the extension or the retraction of the landing gear and comprising a leg having wheels which is linked to the at least one main shaft and a stay coupling the leg to the at least one stay joint, the device comprising:
at least one support structure including a first support means intended to receive said at least one main shaft and a second support means intended to receive said at least one stay joint; and
central box structure coupled to the at least one support structure, the central box structure including a front wall, a rear wall and linking walls connecting the front wall and the rear wall.

### Claim 2 (depends on 1)

The device according to claim 1, wherein said at least one support structure is hollow.

### Claim 3 (depends on 1)

The device according to claim 1, wherein said at least one support structure further comprises two support structures coupled together by the central box structure, and the central box structure is made as a single piece.

### Claim 4 (depends on 1)

The device according to claim 1, wherein the central box structure is hollow.

### Claim 5 (depends on 1)

The device according to claim 1, wherein the central box structure has an internal space intended for the installation of a means for imparting motion to the leg and the stay for the extension and the retraction of the landing gear.

### Claim 6 (depends on 1)

The fastening device according to claim 1, wherein the first and second support means are intended, when the device is mounted on the aircraft fuselage, to be situated in the immediate neighborhood of a reference datum line of the aircraft fuselage.

### Claim 7 (depends on 1)

The device according to claim 1, wherein said at least one support structure further comprises a pair of webs which are substantially parallel to each other, the first support means and the second support means being carried by the pair of webs.

### Claim 8 (depends on 7)

The device according to claim 7, wherein webs of the pair of webs are spaced from each other so as to be able to receive, in the space so formed, the stay and a portion of the leg

### Claim 9 (depends on 8)

The device according to claim 8, wherein the first and second support means are bearings bored in the webs.

### Claim 10 (depends on 6)

The fastening device according to claim 6, further comprising an interface means intended to link said at least one support structure and the aircraft fuselage, the interface means fastened substantially at the location of the reference datum line of the aircraft fuselage.

### Claim 11

An assembly, comprising;
an aircraft landing gear adapted to pivot around at least one main shaft and to be hinged around at least one stay joint to enable the extension or the retraction of the landing gear and comprising a leg having wheels which is linked to the at least one main shaft and a stay coupling the leg to the at least one stay joint; and
a device for intermediate fastening between an aircraft fuselage and the landing gear, comprising:
at least one support structure including a first support means intended to receive said at least one main shaft and a second support means intended to receive said at least one stay joint, the at least one support structure being hollow; and
a central box structure coupled to the at least one support structure, the central box structure including a front wall, a rear wall and linking walls connecting the front wall and the rear wall.

### Claim 12

(canceled)

### Claim 13

An aircraft, comprising:
a fuselage;
a landing gear adapted to pivot around at least one main shaft and to be hinged around at least one stay joint to enable the extension or the retraction of the landing gear and comprising a leg having wheels which is linked to the at least one main shaft and a stay coupling the leg to the at least one stay joint; and
a device for intermediate fastening between the fuselage and the landing gear, comprising:
two support structures, each support structure including a first support means intended to receive said at least one main shaft and a second support means intended to receive said at least one stay joint; and
a central box structure coupled to the two support structures, the central box structure including a front wall, a rear wall and linking walls connecting the front wall and the rear wall.

### Claim 14 (depends on 11)

The assembly according to claim 11, wherein said at least one support structure further comprises two support structures coupled together by the central box structure, and the central box structure is made as a single piece.

### Claim 15 (depends on 11)

The assembly according to claim 11, wherein the central box structure is hollow.

### Claim 16 (depends on 11)

The assembly according to claim 11, wherein the central box structure has an internal space intended for the installation of a means for imparting motion to the leg and the stay for the extension and the retraction of the landing gear.

### Claim 17 (depends on 13)

The aircraft according to claim 13, wherein the first and second support means are intended, when the device is mounted on the fuselage, to be situated in the immediate neighborhood of a reference datum line of the fuselage.

### Claim 18 (depends on 13)

The aircraft according to claim 13, wherein at least one of the two support structures further comprises a pair of webs which are substantially parallel to each other and the first support means and the second support means are carried by the pair of webs.

### Claim 19 (depends on 17)

The aircraft according to claim 17, further comprising an interface means intended to link said at least one support structure and the fuselage, the interface means fastened substantially at the location of the reference datum line of the fuselage.

### Claim 20 (depends on 13)

The aircraft according to claim 13, wherein at least one of the two support structures is hollow.
