A device and method for dispensing air and/or sealant to a tire of a vehicle. Power supply for the air compressor is obtained via powered USB instead of the typical 12 V cigarette lighter connector. The position of the tire which is being inflated can also be determined via the data interface of the USB port. By communication between compressor and the vehicle systems interface, the compressor can automatically switch off when the recommended tire pressure has been reached.

An air deflector that is at least partially disposable within a tubeless tire of a bicycle wheel includes a body. The body includes at least one wall defining an air input end and an air output end of the body. The body is attachable to a valve of the tubeless tire at the air input end, such that when air is introduced into the body via the valve, at least some of the air is deflectable by one or more walls of the at least one wall out of the body at the air output end.

A method for the weight-dependent control of the internal pressure of a supporting body loaded by a weight load or payload, wherein the internal pressure is produced by means of an electric-motor-driven compressor, and the weight load or payload which is present and which acts on a supporting body in the form of a mass m.sub.Load under the effect of acceleration due to gravity g is determined in that a reduction and a subsequent increase in the internal pressure take place, wherein the increase in the internal pressure causes the position of an application point of the weight load or payload to change by a position difference Z, wherein: during the increasing of the internal pressure by means of the compressor, the motor current I.sub.Load of the drive motor of the compressor is measured with a constant motor voltage U and integrated over the time of the increase in pressure, and the electrical work W.sub.Load which is necessary for the change in position is determined therefrom, wherein the electrical work W.sub.Load the electrical work W.sub.Load is compared with a characteristic value of the electrical work W.sub.0 from a characteristic diagram, wherein the change in position Z, the difference in mass m and the difference in payload F.sub.Z are determined from the difference W between W.sub.Load and W.sub.0 and the mass m.sub.Load and the weight load or payload which is actually present as a result is determined therefrom.

A device for preventing excessive increase of an internal pressure of a rolling assembly, the rolling assembly having a rotation axis and comprising a wheel and a tire, the tire being mounted onto the wheel creating an inner cavity surrounded by a wheel internal surface and a tire internal surface, comprises a cold spot placed in the inner cavity of the rolling assembly for condensing vapor contained in a gas filled in the inner cavity.

A device for preventing excessive increase of an internal pressure of a rolling assembly, the rolling assembly having a rotation axis and comprising a wheel and a tire, the tire being mounted onto the wheel creating an inner cavity surrounded by a wheel internal surface and a tire internal surface, comprises a cold spot placed in the inner cavity of the rolling assembly for condensing vapor contained in a gas filled in the inner cavity.

An air chuck for facilitating the connection of a pneumatic hose with a threaded stem of a tire valve includes a housing with an air passage. The housing includes an air inlet port connectable to the pneumatic hose, and an air outlet passage to receive the threaded stem of the tire valve. A clamping member is mounted externally about the outlet passage and includes a hollow tubular member, a front end portion of which terminates in a plurality of separate, radially deflectable fingers, a free end portion of each finger extending towards the discharge end of the outlet passage. The free end portions of each finger define an aperture for receiving the threaded stem of the tire valve. The size of the aperture is variable by the movement of a sleeve, slidable over the body of the housing and the clamping member.

An air chuck for facilitating the connection of a pneumatic hose with a threaded stem of a tire valve includes a housing with an air passage. The housing includes an air inlet port connectable to the pneumatic hose, and an air outlet passage to receive the threaded stem of the tire valve. A clamping member is mounted externally about the outlet passage and includes a hollow tubular member, a front end portion of which terminates in a plurality of separate, radially deflectable fingers, a free end portion of each finger extending towards the discharge end of the outlet passage. The free end portions of each finger define an aperture for receiving the threaded stem of the tire valve. The size of the aperture is variable by the movement of a sleeve, slidable over the body of the housing and the clamping member.

The present invention relates to a pipe connector assembly and a tire maintenance apparatus having the same. The pipe connector assembly comprises a leak-proof valve, and the leak-proof valve is opened only after a sealed fluid medium path is formed between the pipe connector assembly and the tire valve when the pipe connector assembly is screwed to the tire valve. The present invention advantageously prevents fluid medium leakage at the connection between the pipe connector assembly and the tire valve.

The present invention relates to a pipe connector assembly and a tire maintenance apparatus having the same. The pipe connector assembly comprises a leak-proof valve, and the leak-proof valve is opened only after a sealed fluid medium path is formed between the pipe connector assembly and the tire valve when the pipe connector assembly is screwed to the tire valve. The present invention advantageously prevents fluid medium leakage at the connection between the pipe connector assembly and the tire valve.

A cordless compressor has an air storage tank, a pump, a motor for driving the pump, and a controller circuit electrically connected to the motor. A pressure switch assembly is connected to the controller circuit. The pressure switch assembly has first and second pressure switches for sensing pressure within the air storage tank. The controller circuit controls de-activation of the motor depending upon status of the first and second pressure switches.