The invention relates to a compressed-air supply system, in particular for supplying air for tires of a motor vehicle, comprising a compressor having an electric motor, in particular for driving a compressor unit, the compressor unit having a piston that is guided in a cylinder. The piston is coupled to the electric motor via a gearing. A gearwheel eccentrically coupled to the piston has counterweights, the at least one counterweight being snap-fitted in at least one slot of the gearwheel.

An air pressure maintenance apparatus and method uses one or more high-pressure gas storage tanks coupled to an inflation hose via a calibrated rigid measurement chamber and automated system of valves to permit rapid inflation of a tire or other inflatable device to an accurate target pressure accounting for temperature effects, and recording accurate pre- and post-inflation pressure for analysis of deflation over time.

A bicycle air pump includes an air cylinder; a joining member on the cylinder and including upper, intermediate and lower chambers, and a passageway communicating the cylinder with the lower chamber and a relief valve; an activation assembly on the joining member and including a hollow spring-loaded stem in both the intermediate chamber and the lower chamber, an end seal, a cap on the upper chamber, a push rod through the cap to urge against the seal and having an axial hole and a lateral hole communicating with the axial hole, a knob secured to the push rod and the cap, and an outlet; a pressure gauge on the joining member and communicating with the passageway; an inlet assembly secured to bottom of the cylinder and including a check valve; and a blocking member secured to bottom of the stem for blocking the passageway when in an inoperative position.

Push On and Pull Off Schrader and Presta Valve Air Filler Pump Head is disclosed. By using a simple sliding motion and a complete redesign on how the nozzle engages the valve, the invention takes into account the natural action of a hand performing the action where the fingers would naturally be especially in a tight space like that of one that could be encountered between spokes. The invention also takes advantage of dominant muscle groups in the hand and fingers to make the motion of valve engagement and disengagement easier.

Push On and Pull Off Schrader and Presta Valve Air Filler Pump Head is disclosed. By using a simple sliding motion and a complete redesign on how the nozzle engages the valve, the invention takes into account the natural action of a hand performing the action where the fingers would naturally be especially in a tight space like that of one that could be encountered between spokes. The invention also takes advantage of dominant muscle groups in the hand and fingers to make the motion of valve engagement and disengagement easier.

A wheel changing assembly for safely changing a wheel of a vehicle includes a jack that comprises a first housing. A first power module, a first microprocessor, a pump and a lift are coupled to and positioned in the first housing. The first microprocessor is operationally coupled to the first power module. The pump is operationally coupled to the first microprocessor. The lift is fluidically coupled to the pump. A plate is coupled to a second end of the lift. A plurality of wheels is coupled to a bottom of the first housing. A camera, a plurality of lights and a locator, which are coupled to and positioned in the plate, are operationally coupled to the first microprocessor. The camera is configured to image an underside of the vehicle during placement of the jack. The locator is configured to signal proper positioning of the jack relative to the frame of the vehicle.

An inflating device includes a bottle for containing a pressurized air, a housing is secured to the bottle and includes an orifice communicating with an inner chamber of the bottle, a valve piece is engaged in the housing and includes a shank engaged in the orifice of the housing, and a spring biasing member is engaged with the valve piece for biasing the valve piece to engage with the housing and to make an air tight seal between the housing and the valve piece. The pressurized air and a fluid contained in the bottle are allowed to flow out through the orifice of the housing when the pressurized air includes a pressure greater than a spring biasing force of the spring biasing member.

A method and system for servicing a vehicle in accordance with pre-determined maintenance settings is provided. Maintenance settings can be communicated to a vehicle maintenance tool via a communication device and the vehicle maintenance tool can interact with the vehicle in accordance with the maintenance settings.

A manifold for inflating tubeless tires that efficiently directs pressurized air to a void between a tire bead and a rim edge. Manifold is fan shaped with a center face and angled side faces. Side faces have a first plurality of apertures at a predetermined centerline and the center face has a second plurality of apertures that are offset from the predetermined centerline. The offset second plurality of air flow apertures are directed to the widest void between the tire bead and rim edge while the first plurality of air flow apertures are directed to the narrow void on either side of the widest void. A two contact point stop or rest assembly is used to abut against two points on the rim edge to provide and maintain a predetermined distance between the center face and the widest void and to provide an optimum angle of the manifold for inflation.

An assembly supplies compressed air to a wheel of a vehicle. The assembly includes a wheel with a tire, a drive shaft for transmitting torque to the wheel, a wheel bearing on which the wheel in mounted in a rotationally fixed manner, and a toothing between the drive shaft and the wheel bearing. The wheel bearing is tensioned with the drive shaft by a bolt, wherein the bolt is arranged coaxially in relation to the drive shaft. An annular chamber of the wheel bearing is defined inside the wheel bearing and radially outside of the bolt. A compressed air through-opening is provided from the annular chamber of the wheel bearing in the direction of the wheel. A compressed air guide, leads from a compressed air source on the vehicle side into the annular chamber of the wheel bearing, from the annular chamber of the wheel bearing via the at least one compressed air through-opening to the wheel, and from the wheel into the tire.