# US 8,770,601 B2 · Vehicle comprising at least two axles, the wheels of which are parallel

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- Number: US 8,770,601 B2
- Document ID: US8770601B2
- Status: Granted
- Kind: B2
- Application number: 13/388,041
- Filed: 2010-07-06
- Published: 2012-07-26
- Granted: 2014-07-08
- Earliest claimed: 2009-07-29
- Assignees: Compagnie Generale Des Etablissements Michelin; Michelin Recherche et Technique S.A.
- Applicants: Loic Albert; Fabien Marlier; Philippe Mansuy
- Inventors: Loic Albert; Fabien Marlier; Philippe Mansuy
- Web page: https://patentgrep.com/patent/US8770601B2

## CPC

- B62D 53/068: {having devices to equalise or modify the load between the fifth wheel and the rear wheels (adjustable couping saddles per se B62D53/0807; load transfer devices to permit coupling or uncoupling B62D53/0857; anti jack-knifing devices B62D53/0871)}
- B60C 19/001: {Tyres requiring an asymmetric or a special mounting}
- B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M)
- B60C: VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES

## Abstract

A vehicle (3) comprising at least two axles (6, 7, 8) fitted with at least two tires the axis of rotation of which are always mutually parallel from one axle to another. The tires of at least one axle (7) have a cornering stiffness greater than that of the tires of another axle (6, 8).

## Claims

### Claim 1

A vehicle comprising:
a first and a second axle, each being fitted with at least two tires and having an axis of rotation which is always mutually parallel from one of the first and second axles to another; and
at least one intermediate axle fitted with at least two tires and having an axis of rotation which is always mutually parallel with that of the first and second axles,
wherein a set of all tires of the intermediate axle has a cornering stiffness greater than that of a set of all tires of each of the first and second axles, and
wherein at least one axle comprises tires that have a tread strip width greater than those of the tires of at least one other axle.

### Claim 2 (depends on 1)

The vehicle according to claim 1, wherein the cornering stiffness of the set of all tires fitted to the intermediate axle is at least 10% greater than the set of all tires fitted to each of the first and second axles.

### Claim 3 (depends on 1)

The vehicle according to claim 1, wherein the cornering stiffness of the set of all tires fitted to each of the first and second axles is the same.

### Claim 4 (depends on 1)

The vehicle according to claim 1, wherein the cornering stiffness of the set of all tires fitted to each of the first and second axles is different.

### Claim 5 (depends on 1)

The vehicle according to claim 1, wherein each axle bears at least 10% of the load of the vehicle and wherein, during running, said intermediate axle bears a different load from the loads borne by each of the first and second axles.

### Claim 6 (depends on 5)

The vehicle according to claim 5, wherein, during running, said intermediate axle bears a load at least 15% greater than the load borne by another axle.