A pressure gauge broadly comprising a conduit, a pressure indicator, and a tip assembly. The tip assembly extends from the distal end of the conduit and includes an inner shaft, an annular seat, and an outer tip. The inner shaft engages a valve stem core of a valve. The annular seat cradles and provides support to the outer tip. The outer tip forms a seal against a valve stem tube of the valve and has an outer surface having a semi-spherical, dome, or frusto-conical shape for ensuring that the seal is formed regardless of the angle at which the tip engages the valve.

A tire pressure gauge for a bicycle is provided. The tire pressure gauge is fastened to an air valve and includes a connector assembly and a gauge assembly. The connector assembly includes a main body and an air-tight member. The main body includes a front member and a connecting member. The main body includes an opening portion, a first thread hole, and an accommodating channel, in which the opening portion and the first thread hole extend inwards, and the accommodating channel is disposed between the opening portion and the first thread hole. The gas-tight member is disposed in the accommodating channel by passing through the opening portion. When disposed in the accommodating channel, the air-tight member can be squeezed by the inner surface of the accommodating channel, and a gap exists between the air-tight member and the accommodating channel in the axial direction.

Embodiments of the disclosure relate to devices for controlling the pressure of bicycle tire. The devices generally include a casing configured to be housed inside a bicycle wheel and in which are arranged: a measurement unit comprising at least one sensor capable of measuring a pressure of the bicycle tire and producing a signal indicative of the value of the pressure, a transmission unit electrically connected to the measurement unit and capable of transmitting the signal to an external display, and a battery. The casing includes an opening passing through the casing, from an upper face to a lower face, the opening presenting at least one part flaring from its lower face towards the upper face, so as to define a slope adapted to fit a flared support, corresponding to a foot of the valve of the wheel.

A magnetically controlled tire pressure monitoring apparatus includes a tire pressure detector, a power supply and a wake-up device. The power supply supplies electrical power to the tire pressure detector. The tire pressure detector includes a pressure sensor used to detect a tire pressure, a microcontroller connected to the pressure sensor and used to convert the tire pressure to a tire pressure value, a register connected to the microcontroller and used to store the tire pressure value or an ID code of the magnetically controlled tire pressure monitoring apparatus for data processing by the microcontroller, and a wireless signal transmitter connected to the microcontroller and used to convert the tire pressure value or the ID code to an electromagnetic signal. The wake-up device includes a reed switch connected to the microcontroller to control whether the wireless signal transmitter transmits the electromagnetic signal or not.

A pressure measuring device for a bicycle has a housing that includes a pressure chamber. The pressure chamber has a valve disposed in a first opening and a second opening into or out of a tire assembly volume of a tire assembly. A sense element is in pressure communication with the pressure chamber along a flow path between the first and second openings.

A pressure measuring device for a bicycle has a housing that includes a pressure chamber. The pressure chamber has a valve disposed in a first opening and a second opening into or out of a tire assembly volume of a tire assembly. A sense element is in pressure communication with the pressure chamber along a flow path between the first and second openings.

The invention relates to a wheel monitoring device (D) of the type comprising a housing (100) formed from a hollow core (101) containing different components including an electronic board (500) and a power supply battery (600) for said board (500), said housing (100) being positioned inside the tire and fixed to the internal portion (220) of the valve (200) fitted on the wheel, a polymer material fills in the free volume.

The device is remarkable in that the housing (100) is preformed so as to provide at least two different superposed parallel installation planes (P1, P2) on which the different components are distributed, said housing (100) being preformed with a lateral opening to enable the different components to slide laterally into their appropriate installation plane (P1, P2).

A tire pressure gauge for a bicycle is provided. The tire pressure gauge is fastened to an air valve and includes a connector assembly and a gauge assembly. The connector assembly includes a main body and an air-tight member. The main body includes a front member and a connecting member. The main body includes an opening portion, a first thread hole, and an accommodating channel, in which the opening portion and the first thread hole extend inwards, and the accommodating channel is disposed between the opening portion and the first thread hole. The gas-tight member is disposed in the accommodating channel by passing through the opening portion. When disposed in the accommodating channel, the air-tight member can be squeezed by the inner surface of the accommodating channel, and a gap exists between the air-tight member and the accommodating channel in the axial direction.

A magnetically controlled tire pressure monitoring apparatus includes a tire pressure detector, a power supply and a wake-up device. The power supply supplies electrical power to the tire pressure detector. The tire pressure detector includes a pressure sensor used to detect a tire pressure, a microcontroller connected to the pressure sensor and used to convert the tire pressure to a tire pressure value, a register connected to the microcontroller and used to store the tire pressure value or an ID code of the magnetically controlled tire pressure monitoring apparatus for data processing by the microcontroller, and a wireless signal transmitter connected to the microcontroller and used to convert the tire pressure value or the ID code to an electromagnetic signal. The wake-up device includes a reed switch connected to the microcontroller to control whether the wireless signal transmitter transmits the electromagnetic signal or not.

A bicycle tire pressure cap, used with a bicycle tire valve, comprising a metal case, an anti-leak washer, a ventilation disc, a rubber gasket, a floating holder, a warning plug, a spring and a transparent cover. The bicycle tire pressure has a simple structure, low failure rate, low cost, and can quickly indicate whether the tire pressure is sufficient and effectively enhance the riding safety.