A reflector for a vehicle wheel, or a bicycle wheel, contains an air valve attachment, and a reflective surface affixed to the air valve attachment. The reflective surface contains a portion which is aligned perpendicular to the axis of the air valve attachment. A bicycle wheel and a kit are also described herein.

The invention is directed to a valve stem system (1) for tubeless wheels. The valve stem system (1) includes a valve stem body (2) with a first end (3) and a second end (4), wherein the second end (4) is located in a tire/rim-volume when mounted at the wheel. A first valve (5) is arranged at the second end (4) of the valve stem body (2). The first valve (5) is a self-sealing one-way valve. A second valve (10) is removably mountable at the first end (3) and is, when mounted, at least partially housed in the valve stem body (2). The second valve (10) comprises a valve stem core inserted in the valve stem body (2) and can be added or removed from the valve stem body (2) while pressure is maintained within the tire by the first valve (5). The invention further concerns a probe (30) for a valve stem system, a method to test the amount of sealant in a wheel and a refilling assembly (80) for a wheel.

An electronic air pump pressurizes object in either manual or automatic mode. In automatic mode, the electronic air pump determines air pressure needed to adjust an object to a set target pressure. The electronic air pump inflates or deflates the ball automatically until the air pressure inside the ball matches the preset value. In manual mode regulation of the air pressure is adjusted by a user.

A device for adjustment of pressure in tires includes a chamber with shape memory and a valve. The valve is a three-way valve with inputs interconnected with the external environment and the tire internal space, where one input is fitted with a valve, the next input is connected to one end of the chamber with shape memory, and the last input is interconnected with the closure element. The device for adjustment of pressure in tires includes the chamber with shape memory interconnected with the external environment through an input and with the tire chamber through an output and fitted with at least one valve. The length of the chamber in the direction of tire rotation equals 0.001 to 0.5 of the tire perimeter, where the volume of the chamber before deformation to volume of the chamber during deformation ratio is the same or higher then the desired tire pressure to pressure of the external environment ratio.

A device for adjustment of pressure in tires includes a chamber with shape memory and a valve. The valve is a three-way valve with inputs interconnected with the external environment and the tire internal space, where one input is fitted with a valve, the next input is connected to one end of the chamber with shape memory, and the last input is interconnected with the closure element. The device for adjustment of pressure in tires includes the chamber with shape memory interconnected with the external environment through an input and with the tire chamber through an output and fitted with at least one valve. The length of the chamber in the direction of tire rotation equals 0.001 to 0.5 of the tire perimeter, where the volume of the chamber before deformation to volume of the chamber during deformation ratio is the same or higher then the desired tire pressure to pressure of the external environment ratio.

An electronic air pump pressurizes object in either manual or automatic mode. In automatic mode, the electronic air pump determines air pressure needed to adjust an object to a set target pressure. The electronic air pump inflates or deflates the ball automatically until the air pressure inside the ball matches the preset value. In manual mode regulation of the air pressure is adjusted by a user.

A coupling for valve assemblies, for tubeless tires, includes an enclosure arranged to cover a rigid rim of a vehicle, to delimit a substantially tubular compartment, filled with gas under pressure. The coupling has a first element and a second element crossed respectively by a first through channel, threaded internally, and by a second through channel. The second element cooperates with a valve for the selective closure of the second channel. The first element rests on an internal surface of the rim, which can be activated following its hermetic insertion, from the inside of the compartment. The second element rests on an external surface of the rim, which can be activated following the hermetic screwing, from the outside of the compartment, of a threaded stem of the second element in the first channel, with consequent alignment between the channels to connect the compartment to the outside.

An axle assembly having a constant shaft disposed at least partially through a bearing hub assembly. The constant shaft defines a fluid conduit therethrough. A steering knuckle is disposed at least partially about the constant shaft. The axle assembly may include a bearing spacer disposed about the constant shaft, the bearing spacer being disposed at least partially axially between the bearing hub assembly and the steering knuckle. Additionally, a first rotary seal and a second rotary seal may be disposed radially between the bearing spacer and the constant shaft. The first and second rotary seals may at least partially define a fluid chamber in fluid communication with the constant shaft fluid conduit. Further, a port may be disposed through the bearing spacer, wherein the port is in fluid communication with the fluid chamber.

An axle assembly having a constant shaft disposed at least partially through a bearing hub assembly. The constant shaft defines a fluid conduit therethrough. A steering knuckle is disposed at least partially about the constant shaft. The axle assembly may include a bearing spacer disposed about the constant shaft, the bearing spacer being disposed at least partially axially between the bearing hub assembly and the steering knuckle. Additionally, a first rotary seal and a second rotary seal may be disposed radially between the bearing spacer and the constant shaft. The first and second rotary seals may at least partially define a fluid chamber in fluid communication with the constant shaft fluid conduit. Further, a port may be disposed through the bearing spacer, wherein the port is in fluid communication with the fluid chamber.

The present invention provides a tire valve stem assembly for a pneumatic tire having a valve stem for inflating the tire and having a member extending from the valve stem into an interior of the tire to prevent clogging or minimize clogging of the valve stem by leak sealing material.