An expiration date notification method includes activating an expiration date notification device for a puncture repair liquid installed in a vehicle that comprises a storage unit that stores an expiration date of a puncture repair liquid contained in a container, a notification condition setting unit that sets a notification period and a notification manner for notifying of a replacement period of the puncture repair liquid based on the expiration date stored in the storage unit, a notifying unit that notifies of the replacement period of the puncture repair liquid, and a control unit that controls the notifying unit based on settings of the notification condition setting unit; and notifying a user of the vehicle of the replacement period of the puncture repair liquid within a preset notification period including before and after the expiration date of the puncture repair liquid via a preset notification manner.

A tire maintenance means (1) is provided, which includes a monitoring module (2) for monitoring the status of a tire; an inflating module (4) for inflating or deflating the tire; a repairing module (5) for filling a sealant to the tire; a control module (3) for maintaining the tire based on a signal from the monitoring module (2). A method of maintaining a tire is also provided.

Provided is a puncture repair liquid holding container. An outflow channel in a cap mounted to an opening portion of a container body for discharging the puncture repair liquid inside the container interior to a container exterior includes a straight portion including an open end opening toward inside the container body and a closed end terminating inside the cap, and a branching portion including a communicating end communicating with an intermediate area of the straight portion and an open end opening toward the container exterior. A through-hole is at the closed end of the straight portion. A projection on a closing plug and slidably inserted to the straight portion is slidably inserted to the through-hole. States are switchable between open and closed states in which the outflow channel is opened and closed by the closing plug and the projection is positioned in the through-hole or projects from the through-hole.

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.

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.

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.

An inflation valve for a tubeless tire may include a valve body defining a cavity having a proximal opening and a distal opening. A valve stem extends through the cavity and includes a plug at a proximal end of the valve stem. The proximal opening of the cavity is defined by a beveled surface, and an outer diameter of the beveled surface is larger than an inner diameter of the valve body. The valve is transitionable between: a) a closed position, where a resilient surface of the plug engages the beveled surface to seal the cavity, and b) an open position, where the resilient surface of the plug is spaced from the beveled surface to unseal the cavity.

The invention relates to a puncture assistance device 1 for sealing and inflating vehicle tires, comprising a pressure source, the puncture assistance device 1 having at least one battery, which supplies power to the pressure source. The invention also relates to a method for charging such a puncture assistance device 1, the puncture assistance device 1 being charged in a vehicle by means of a power supply interface 9 and/or inductively. The invention is directed to a system for charging a puncture assistance device 1, comprising a vehicle with an inductive charging surface, and a puncture assistance device 1 of this type, the puncture assistance device 1 being arranged in the charging region of the inductive charging surface in the vehicle.

Devices for sealing and inflating inflatable objects, in particular for sealing and inflating motor vehicle tires, wherein the devices have as a source of compressed gas a compressor unit, which is formed as a reciprocating piston compressor driven by a slider crank mechanism and has a piston moved in an oscillating manner in a cylinder, and wherein the piston and the cylinder delimit a compression chamber and the cylinder is closed on the output side by a cylinder head with an outlet valve.