Wheel end assembly high-temperature warning system

A wheel end assembly rotatable on an axle on a vehicle having a high temperature warning system comprising,

• an air pressure supply positioned inside the axle and connected to a pressure source on the vehicle,
• a normally closed valve connected to the axle between the inside and outside of said pressure supply,
• a heat sensitive control connected to and actuating said valve upon a predetermined temperature,
• said control mounted on the axle adjacent to said wheel end assemble for measuring the temperature of the assembly and axle, and
• a warning system connected to the pressure supply for actuation upon opening of the valve,
• wherein the air pressure supply includes tubing positioned in a wheel axle and connected to one or more heat sensitive pressure barriers.

In a vehicle having an automatic tire inflation system for providing air to a rotating tire on a wheel end assembly rotatably mounted on bearings on a hollow axle connected to an air pressure supply for supplying air to the inside of the axle, a rotary connection in communication between the tire and air inside of the axle, the combination of a high temperature warning system comprising,

• a normally closed valve connected between the inside and the outside of the axle in connection with the air in the axle,
• a heat sensitive control connected to and actuating said valve open upon a predetermined temperature,
• said control mounted on the axle adjacent said wheel assembly for measuring the temperature of the wheel assembly and axle, and
• a warning system connected to the air supply for actuation upon opening of the valve,
• wherein the hollow axle is closed at the ends with a plug and the heat sensitive control includes a heat sensitive pressure barrier positioned in each plug.

In a vehicle having an automatic tire inflation system for providing air to a rotating tire on a wheel end assembly rotatable mounted on bearings on a hollow axle connected to an air pressure supply for supplying air to the inside of the axle, a rotary connection in communication between the tire and air inside of the axle, the combination of a high temperature warning system comprising,

• a normally closed valve connected between the inside and the outside of the axle in connection with the air in the axle,
• a heat sensitive control connected to and actuating said valve open upon a predetermined temperature,
• said control mounted on the axle adjacent said wheel assembly for measuring the temperature of the wheel assembly and axle, and
• a warning system connected to the air supply for actuation upon opening of the valve,
• wherein the heat sensitive control includes one or more heat sensitive pressure barriers positioned in the axle adjacent bearings or brakes in the wheel assembly.

In a vehicle having an automatic tire inflation system for providing air to a rotating tire on a wheel end assembly rotatably mounted on bearings on a hollow axle connected to an air pressure supply for supplying air to the inside of the axle, a rotary connection in communication between the tire and air inside of the axle, the combination of a high temperature warning system comprising,

• a normally closed valve connected between the inside and the outside of the axle in connection with the air in the axle,
• a heat sensitive control connected to and actuating said valve open upon a predetermined temperature,
• said control mounted on the axle adjacent said wheel assembly for measuring the temperature of the wheel assembly and axle, and
• a warning system connected to the air supply for actuation upon opening of the valve,
• wherein the air pressure supply includes tubing positioned in the axle and connected to one or more heat sensitive pressure barriers.