The invention relates to the field of tire pressure detection technologies, and discloses a tire pressure sensor including: a valve assembly including a mounting portion and an elastic telescopic structure mounted to the mounting portion, the elastic telescopic structure elastically extending and retracting on at least one side of the mounting portion; a sensor assembly having two opposite clamping surfaces, at least one of the two clamping surfaces being provided with a locking hole, the mounting portion being located between two of the clamping surfaces, and the elastic telescopic structure being inserted into the locking hole. After the elastic telescopic structure is shortened, the mounting portion of the valve assembly may be inserted between the two clamping surfaces. When the mounting portion of the valve assembly is located between the two clamping surfaces, the elastic telescopic structure may be extended and inserted into the locking hole automatically, so that the valve assembly and the sensor assembly may be installed conveniently, and no additional tools are required.

The invention relates to the field of tire pressure detection technologies, and discloses a tire pressure sensor including: a valve assembly including a mounting portion and an elastic telescopic structure mounted to the mounting portion, the elastic telescopic structure elastically extending and retracting on at least one side of the mounting portion; a sensor assembly having two opposite clamping surfaces, at least one of the two clamping surfaces being provided with a locking hole, the mounting portion being located between two of the clamping surfaces, and the elastic telescopic structure being inserted into the locking hole. After the elastic telescopic structure is shortened, the mounting portion of the valve assembly may be inserted between the two clamping surfaces. When the mounting portion of the valve assembly is located between the two clamping surfaces, the elastic telescopic structure may be extended and inserted into the locking hole automatically, so that the valve assembly and the sensor assembly may be installed conveniently, and no additional tools are required.

An inflator disposed within a tubeless tire for inflating the tubeless tire. A rechargeable electric storage disposed within a tubeless for providing electricity. An electric air compressor is mounted on an inside surface of the rim of the tubeless tire within the pressure cavity of the tubeless tire. The electric air compressor and an air pressure sensor disposed within the tubeless tire runs by a controller. The electric air compressor has a compressed air inlet vented to atmosphere in a custom valve stem through a conventional hole of a valve stem in the rim of the tubeless tire. A motion activated power generator recharges the rechargeable electric storage. A short-range radio transmits measured pressure data for each tire to a central OBD module plugged into in the vehicle. The central OBD module connects through a smartphone indirectly or directly to a central server via a networked cellular radio tower.

A pressure control assembly for an air maintenance tire includes a control valve assembly. The pressure control assembly mounts in proximal relationship to a tire valve stem and operably controls a flow of pressurized air through the tire valve stem from an ancillary tire-mounted pressurized air source. The ancillary tire-mounted pressurized air source and an external pressurized air source share the valve stem for delivery of pressurized air to the tire cavity. The pressure control assembly mounts to a surface of a wheel supporting the tire at a control location in proximal relationship with the valve stem.

A pressure control assembly for an air maintenance tire includes a control valve assembly. The pressure control assembly mounts in proximal relationship to a tire valve stem and operably controls a flow of pressurized air through the tire valve stem from an ancillary tire-mounted pressurized air source. The ancillary tire-mounted pressurized air source and an external pressurized air source share the valve stem for delivery of pressurized air to the tire cavity. The pressure control assembly mounts to a surface of a wheel supporting the tire at a control location in proximal relationship with the valve stem.

Valves for inflating tires of tired wheels, in particular tires for vehicles, wherein the term “vehicles” refers to motor vehicles, vans, trucks, motorcycles or in general elements of locomotion on tires. More in detail, a metal valve (1) of the clamp-in type for inflating tires (2) associable with a TPMS transducer (3) by a locking screw (4) and arranged to be mounted, by a fixing system including a nut (5) adapted to screw onto a thread (18) provided on the stem (8) of the valve (1), on a rim (6) of a wheel, wherein the fixing system includes an element (7) that irreversibly yields when a preset tightening torque is reached for the locking nut (5), and wherein the element (7) that irreversibly yields is associated with the stem (8) of the valve (1).

Valves for inflating tires of tired wheels, in particular tires for vehicles, wherein the term “vehicles” refers to motor vehicles, vans, trucks, motorcycles or in general elements of locomotion on tires. More in detail, a metal valve (1) of the clamp-in type for inflating tires (2) associable with a TPMS transducer (3) by a locking screw (4) and arranged to be mounted, by a fixing system including a nut (5) adapted to screw onto a thread (18) provided on the stem (8) of the valve (1), on a rim (6) of a wheel, wherein the fixing system includes an element (7) that irreversibly yields when a preset tightening torque is reached for the locking nut (5), and wherein the element (7) that irreversibly yields is associated with the stem (8) of the valve (1).

Provided is a replacement necessity determination device for a snap-in valve having an inner end to which an air pressure detection device including an air pressure sensor and an acceleration sensor is coupled. A control device of the replacement necessity determination device is configured to predict an angle change amount of the snap-in valve and the air pressure detection device with respect to a wheel caused by a centrifugal force based on a rotational speed of the wheel and an acceleration detected by the acceleration sensor, calculate a degradation indication value of an elastic body of the snap-in valve based on a maximum value of the angle change amount during a period set in advance, and determine necessity of replacement of the snap-in valve based on an integrated value of the degradation indication value.

Provided is a replacement necessity determination device for a snap-in valve having an inner end to which an air pressure detection device including an air pressure sensor and an acceleration sensor is coupled. A control device of the replacement necessity determination device is configured to predict an angle change amount of the snap-in valve and the air pressure detection device with respect to a wheel caused by a centrifugal force based on a rotational speed of the wheel and an acceleration detected by the acceleration sensor, calculate a degradation indication value of an elastic body of the snap-in valve based on a maximum value of the angle change amount during a period set in advance, and determine necessity of replacement of the snap-in valve based on an integrated value of the degradation indication value.

An air maintenance tire assembly includes a tire having a tire cavity bounded by first and second sidewalls extending to a tire tread region, air pumping means for generating pressurized air for maintaining air pressure within the tire cavity at a preset pressure level, the air pumping means including a soft tubing and compression fittings for mitigating dynamic loading on the compression fittings, and a valve housing disposed adjacent an outward end of the valve stem and operative to selectively open and close pressurized air flow from the valve stem internal passageway into the tire cavity. The valve housing is connected to the air pumping means by the soft tubing and compression fittings for mitigating dynamic loading on the compression fittings.