A valve stem includes: a pair of internal electrodes connected to an internal circuit; a pair of external electrodes connectable to an external circuit; first and second conductive members having the internal electrodes and the external electrodes and insulated from each other; a conductive stem main body forming the first conductive member; a core fitting portion; and an inner sleeve fitted in the stem main body. The inner sleeve includes a conductive inner sleeve main body forming the second conductive member, and an insulating layer covering an outer side surface of the inner sleeve main body to insulate between the inner sleeve main body and the stem main body. The stem main body has a side surface through-hole laterally penetrating the stem main body and closed with an end portion of the inner sleeve, the side surface through-hole providing the external electrode of the second conductive member.

A tire parameter monitoring system has an electronic module with a fitting for a snap-in valve, an adapter with first lamellae couplable to the fitting, a valve stem for a clamp-in valve with second lamellae that are interleavable with the first lamellae, and a pin. The first lamellae have a first hole extending substantially perpendicularly to a major surface of the first lamellae and the second lamellae have a second hole extending substantially perpendicularly to a major surface of the second lamellae. The first and second holes are aligned when the first and second lamellae are interleaved. The pin is inserted into the first and second holes to secure the adapter and the valve stem together and to allow rotational movement of the adapter and the valve stem around a longitudinal axis of the pin such that the valve stem is positionable at different angles to the electronic module.

The invention relates to a tire pressure sensor that includes a pressure transducer, a transmitter, and a housing carrying the pressure transducer and the transmitter, adapted to be mounted to an air inlet end of a tire valve; wherein the housing has a sleeve part which has an internal thread at the end for screwing the sleeve part onto the tire valve. The tire pressure sensor according to the invention is characterized in that the housing further has a receiving part in or on which the pressure sensor and the transmitter are arranged and which, in the mounted state, is connected to the sleeve part so as to be rotatable relative to the sleeve part.

Provided is a tire information acquisition device. A sensor unit substrate on which a sensor for acquiring tire information and a power supply unit for supplying electric power to the sensor are disposed is provided, and a heat-insulating material is disposed at at least a periphery of the power supply unit.

A pressure sensing assembly configured to be attached to a bicycle wheel having a tire and a rim mounted to the tire. The pressure sensing assembly includes a housing, a pressure transmitting member, a sensing chamber defined by the housing and the pressure transmitting member, and a sensing element. The pressure transmitting member is coupled the housing and has a central portion offset from the plane in a first direction. The sensing element is offset from the plane in a second direction opposite the first direction. The pressure transmitting member is configured to transmit a pressure in the tire to the sensing element via the sensing chamber.

The vehicle tire inflation system comprises an air jacket and an air hose. The air jacket may reside within a wheel of a vehicle and may be mounted to the inside of a rim of the wheel. The air jacket may determine that a tire of the wheel has at least partially deflated by sensing that tire pressure within the wheel has dropped below a first pressure threshold. The air jacket may release compressed air within the wheel until the air jacket senses that the tire pressure has reached a second pressure threshold such that the tire may be reinflated. The air hose may be configured to couple the air jacket to a tire pressure monitoring system such that the air jacket has access to an external air supply located outside of the wheel via the tire pressure monitoring system.

A module for detecting a physical value of a gaseous medium includes a discrete component including a detection section on a surface, the discrete component being configured to detect the physical value of the gaseous medium that acts on the detection section, a supply-line component configured to introduce the gaseous medium to the detection section, a seal in contact with the supply-line component and the surface of the discrete component and configured to fluidly seal the detection section on the surface of the discrete component. The seal includes a seal lip configured to enclose the detection section such that the seal forms a sealing space, the sealing space including the detection section and being separated from an external space by the seal.

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.

A tire pressure monitor includes a printed circuit board (PCB) and a sealed pressure chamber mounted to the PCB. The tire pressure monitor also includes a piston mounted adjacent to the sealed pressure chamber. The piston is configured to contact the sealed pressure chamber in response to an applied pressure. The tire pressure monitor also includes a liquid within the sealed pressure chamber. Translation of the piston causes the liquid to apply pressure to a pressure sensor. The pressure sensor is mounted within the sealed pressure chamber, and is configured to detect the applied pressure.