A method for inflating a tyre mounted on a corresponding wheel rim comprises the following steps in sequence; placing a tool at an operating position, where a first bead of the tyre is interposed between the tool and a second bead of the tyre, and one end of tool is positioned axially between a first flange of the rim and a first rib of the rim and positioned radially between an outside surface of the rim and a tread of the tyre; blowing a gas under pressure through an inflation valve of the tyre into a chamber delimited by the tyre and by the rim, with the tool at the operating position, so that the first sidewall of the tyre is pressed against the end of the tool; removing the tool from the operating position.

An inflator includes an inflator housing, a pressure sensor operable to generate a pressure signal related to an outlet pressure of the inflator, a motor within the inflator housing, a battery pack removably coupleable to the inflator housing, and a controller electrically coupled to the motor and the battery pack. The controller is configured to receive the pressure signal from the pressure sensor, determine a rate of pressurization change based on the pressure signal, determine a static pressure value based on the rate of pressurization change, and determine a motor time delay based on a target pressure value, the static pressure value, and the rate of pressurization change. The controller is also configured to generate a control signal when the motor time delay substantially equals zero. The control signal is operable to cause power to the motor to be turned off to stop a pressurization condition of the inflator.

A portable inflation device having a pump, a control device, a user interface, and an inflation indicator. The pump includes an elongated hose with an inflation nozzle. The control device controls operation of the pump and is configured to sense a current pressure of an object, calculate the estimated remaining time to inflate the object to a target pressure, and display the remaining time using the inflation indicator. The user interface is configured to allow a user to enter the target pressure into the control device.

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 multi-functional, portable device for use in situations where electricity is not available or convenient is disclosed. A portable safety device includes a power charger and air compressor that may safely jump start a vehicle and recharge portable electronic devices, such as phones and laptop computers, as well as inflate vehicle tires or other inflatable objects, when a standard external power source is not convenient. It may also be used for providing an emergency light source.

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 portable air pump assembly is constructed with a power bank with flashlight, USB output, laptop output, a 12V appliance connection port, a jump start clamp, and an air pump with three adaptors for inflating different devices including car tires, inflatable toys, camping furniture and sports equipment. A portable air pump assembly comprising: an enclosed pistol shaped housing defining a central chamber adapted to hold a plurality of pump components the pump components comprising a driving assembly mounted inside said enclosed housing. A pivotal trigger assembly is mounted to the housing which controls power to said motor and a display cap mounted on the rear of said pistol shaped housing, the display cap showing pressure values generated by the pump mechanism, and a portable power source adapted to be connected with the electric motor through the universal connection port and a control circuit.

An inflator with an air guiding sleeve includes a chassis, a core and a drive motor installed in the chassis, an air guiding sleeve and a cooling fan. The air guiding sleeve has an air guiding hole penetrating through the air guiding sleeve. The drive motor includes a main body and a shaft rotatably installed to the main body, and the shaft has an end protruded from the main body and provided for driving the core to move and the other end protruded from the main body and provided for connecting the cooling fan. The air guiding sleeve includes a positioning shell and an air guiding ring connected to the positioning shell, and the positioning shell is installed to the chassis and/or the drive motor, and the air guiding ring is sheathed onto the external side of the cooling fan and installed around the cooling fan.

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.