# US 2016/0375916 A1 · Wheel Axle Comprising at Least Two Protection Devices

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- Number: US 2016/0375916 A1
- Document ID: US20160375916A1
- Status: Published application
- Kind: A1
- Application number: 15/189,802
- Filed: 2016-06-22
- Published: 2016-12-29
- Earliest claimed: 2015-06-23
- Assignees: Alstom Transport Technologies
- Applicants: Alstom Transport Technologies
- Inventors: Patrick ZANGHELLI
- Web page: https://patentgrep.com/patent/US20160375916A1

## CPC

- B61F 15/26: Covers; Sealing thereof
- B60B 35/04: straight
- B60B 35/16: Axle housings
- B60B 37/02: the wheels being integral with solid axles
- B60B 37/04: the wheels being rigidly attached to solid axles
- B61F 19/00: Wheel guards; Bumpers; Obstruction removers or the like (for vehicles in general B60R19/00)
- B60B 17/00: Wheels characterised by rail-engaging elements ({wheel-axle combinations B60B37/00;} of model railways A63H19/22)
- B60B 2310/306: by clamping or wedging, e.g. by clamping inserts as joining means
- B60B 2310/307: by removably mountable securing elements, e.g. circlips
- B60B 2900/212: Damage
- B60B 2900/3312: during regular use
- B60Y 2200/30: Railway vehicles
- B61F: RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES (for vehicles in general B60; axles or wheels B60B; vehicle tyres B60C)
- B60B: VEHICLE WHEELS (making wheels or wheel parts by rolling B21H1/00, by forging, hammering or pressing B21K1/28); CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY

## Abstract

The invention relates to a wheel axle for a vehicle, the wheel axle comprising a shaft extending along a main axis, a first protection device and at least one second protection device, each device comprising a body at least partially surrounding the shaft in a plane perpendicular to the main axis, the body having a first end portion and a second end portion, the end portions being opposite one another along their main axis. The first end portion of the first device at least partially surrounds the second end portion of the second device in a plane perpendicular to the main axis.

## Claims

### Claim 1

A wheel axle for a vehicle, the wheel axle comprising a shaft extending along a main axis, a first protection device and at least one second protection device, each device comprising a body at least partially surrounding the shaft in a plane perpendicular to the main axis, the body having a first end portion and a second end portion, the end portions being opposite one another along the main axis,
characterized in that the first end portion of the first device at least partially surrounds the second end portion of the second device in a plane perpendicular to the main axis.

### Claim 2 (depends on 1)

The wheel axle according to claim 1, wherein the body of each device comprises two half-shells, each half-shell being substantially semi-cylindrical.

### Claim 3 (depends on 2)

The wheel axle according to claim 2, wherein the two half-shells are identical to one another.

### Claim 4 (depends on 2)

The wheel axle according to claim 2, wherein the two half-shells are fastened to one another by snapping.

### Claim 5 (depends on 1)

The wheel axle according to claim 1, wherein the first end portion and the second end portion each have a cylindrical shape with an annular base.

### Claim 6 (depends on 1)

The wheel axle according to claim 1, wherein the first end portion has a first length along the main axis and the second end portion has a second length along the main axis, the first length and the second length each being greater than or equal to 2 centimeters.

### Claim 7 (depends on 1)

The wheel axle according to claim 1, wherein the first end portion has a first outer diameter and a first inner diameter, the second end portion has a second outer diameter and a second inner diameter, the difference between the first inner diameter and the second outer diameter being greater than or equal to 10 millimeters.

### Claim 8 (depends on 1)

The wheel axle according to claim 1, wherein the body comprises a gripping portion defined along the main axis by the first end portion and the second end portion, the device comprising a collar gripping the gripping portion against the shaft.

### Claim 9 (depends on 8)

The wheel axle according to claim 8, wherein the gripping portion has a third inner diameter strictly smaller than the second inner diameter.

### Claim 10 (depends on 1)

A rail vehicle comprising at least one wheel axle according to claim 1.