Abstract: 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.

Abstract: 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.

Abstract: An inflation valve includes a hollow sleeve having a first chamber and a second chamber; a first valve body located in the first chamber; a second valve body located in the second chamber; an air inlet connector screwed to an upper end of the second chamber; and a central pin assembly mounted in the air inlet connector. When an object being inflated by the inflation valve is excessively inflated, the inflation valve automatically releases surplus high-pressure air via at least one release pod of the second chamber by pushing the first valve body and the second valve body upward.

Abstract: An inflation valve includes a hollow sleeve having a first chamber with an internal beveled stop shoulder and a second chamber having at least one release port; a first valve body located in the first chamber and normally pushed upward by a first compression spring; a second valve body located in the second chamber with a head of the first valve body fitted therein and an inclined section provided around an outer wall surface thereof, and normally pushed downward by a second compression spring, and the release port on the second chamber being provided between the inclined section and the beveled stop shoulder for releasing surplus high-pressure air; an air inlet connector screwed to an upper end of the second chamber; and a central pin assembly mounted in the air inlet connector with a lower end screwed to the head of the first valve body for pushing the first valve body downward.

Abstract: A tire pressure monitoring system with bidirectional communication function includes sensing units mounted on tires of a vehicle for sensing tire pressures and wirelessly transmitting tire pressure signals; a wireless receiver and a wireless transmitter mounted near a rear and a front end of the vehicle, respectively, the wireless receiver receiving tire pressure signals transmitted from the sensing units on tires closer to the rear end of the vehicle, the wireless transmitter being connected to the wireless receiver via a signal line, so as to receive tire pressure signals from the wireless receiver and wirelessly transmit integrated tire pressure signals; a second wireless module and/or a portable monitoring module for receiving and displaying the tire pressure signals transmitted from the wireless transmitter.

Abstract: A multifunctional two-way fluid check valve includes a hollow sleeve internally defining a first and a second chamber, and an inclined stop shoulder; an inflation-valve connecting head located below the hollow sleeve and having a gas mouth mounted therein; a first and a second valve body elastically movably located in the first and the second chamber, respectively; and a gas inlet connector mounted to an upper end of the second chamber. The second valve body has an external inclined section with a first airtight gasket thereon in contact with an inner inclined shoulder section on the second chamber, and a lower outer surface with a second airtight gasket thereon in contact with the inclined stop shoulder on the hollow sleeve. At least one release port is formed on a wall of the second chamber below the inner inclined shoulder section and above the beveled stop shoulder.

Abstract: A tire pressure warning device with adjustable pressure setting includes a case divided into a lower and an upper chamber and having a shoulder portion formed near a top thereof; a valve structure mounted in the lower chamber of the case; a membrane, a bushing, a push member, an elastic element, and a pressure-adjusting element sequentially mounted in the upper chamber of the case; and a cover connected to the top of the case. While the elastic element defines a basic pressure setting for the device to measure the air pressure inside a specific type of tire, a pressure-adjusting element with a suitable thickness may be selected to adjust the tightness of an elastic fixing element and thereby changes the pressure setting for the device, so that the device could also be used to measure the tire pressure of other different types of tires.

Abstract: A magnifying device for tire pressure gage reading includes a holding element slidably and removably mounted on a main body of a tire pressure gage, a connecting arm connected at an end to and extending slantingly outward from the holding element, and a magnifying element connected to the other end of the connecting arm opposite to the holding element to align with a reading shown on the tire pressure gage. With the help of the magnifying device, a user may easily and clearly view a magnified image of the reading shown on the tire pressure gage. And, the tire pressure gage is provided with an attaching device, with which a user may conveniently carry the gage or attach the gage to a fixed point.

Abstract: A tire pressure warning device with adjustable pressure setting includes a case divided into a lower and an upper chamber and having a shoulder portion formed near a top thereof; a valve structure mounted in the lower chamber of the case; a membrane, a bushing, a push member, an elastic element, and a pressure-adjusting element sequentially mounted in the upper chamber of the case; and a cover connected to the top of the case. While the elastic element defines a basic pressure setting for the device to measure the air pressure inside a specific type of tire, a pressure-adjusting element with a suitable thickness may be selected to adjust the tightness of an elastic fixing element and thereby changes the pressure setting for the device, so that the device could also be used to measure the tire pressure of other different types of tires.

Abstract: An improved pressure reading structure for a pressure gage is disclosed, comprising a data plate, a rotable pointer and a protection casing. The data plate includes a central area and an extended area next to and connected to the central area, both of the areas being positioned on different planes to serve as an upper area and a lower area thereof respectively. In addition, the rotable pointer has a first end mounted above the central area of the data plate, a second end mounted above the extended area of the data plate, and a needle relative to the data plate to form a space. Accordingly, tire pressure can be read from different view angles, and also, use of the pressure gage becomes more convenient.

Abstract: An improved pressure reading structure for a pressure gage is disclosed, comprising a data plate, a rotable pointer and a protection casing. The data plate includes a central area and an extended area next to and connected to the central area, both of the areas being positioned on different planes to serve as an upper area and a lower area thereof respectively. In addition, the rotable pointer has a first end mounted above the central area of the data plate, a second end mounted above the extended area of the data plate, and a needle relative to the data plate to form a space. Accordingly, tire pressure can be read from different view angles, and also, use of the pressure gage becomes more convenient.

Abstract: A magnifying device for tire pressure gage reading includes a holding element slidably and removably mounted on a main body of a tire pressure gage, a connecting arm connected at an end to and extending slantingly outward from the holding element, and a magnifying element connected to the other end of the connecting arm opposite to the holding element to align with a reading shown on the tire pressure gage. With the help of the magnifying device, a user may easily and clearly view a magnified image of the reading shown on the tire pressure gage. And, the tire pressure gage is provided with an attaching device, with which a user may conveniently carry the gage or attach the gage to a fixed point.

Abstract: A multifunction car theft alarm lock with tire pressure sensing device, includes a lock unit adapted to lock the steering wheel of a car, a sensor module providing multiple sensing modes to enhance the anti-theft function, and tire pressure sensors adapted to detect tire pressure of the car and adapted to enable an audio visual alarm if tire pressure drops below a predetermined value.

Abstract: A tire pressure gauge includes a tubular housing, an air ventilating member dividing the housing into receiving and coupling chambers, a flexible diaphragm disposed in the receiving chamber and having a raised portion which is movable in response to an air pressure introduced into the receiving chamber through the coupling chamber, which is coupled to a tire valve, so as to move a pressure indicating member relative to a cap in order to indicate the tire pressure condition, an adjustable member adjustably disposed in the cap, and a biasing member disposed between the pressure indicating member and the adjustable member so as to correct the position of the pressure indicating member.

Abstract: A multifunction car theft alarm lock with tire pressure sensing device, includes a lock unit adapted to lock the steering wheel of a car, a sensor module providing multiple sensing modes to enhance the anti-theft function, and tire pressure sensors adapted to detect tire pressure of the car and adapted to enable an audio visual alarm if tire pressure drops below a predetermined value.

Abstract: A tire pressure gauge includes a tubular housing, an air ventilating member dividing the housing into receiving and coupling chambers, a flexible diaphragm disposed in the receiving chamber and having a raised portion which is movable in response to an air pressure introduced into the receiving chamber through the coupling chamber, which is coupled to a tire valve, so as to move a pressure indicating member relative to a cap in order to indicate the tire pressure condition, an adjustable member adjustably disposed in the cap, and a biasing member disposed between the pressure indicating member and the adjustable member so as to correct the position of the pressure indicating member.

Abstract: A pressure reading structure used in a pressure gauge is disclosed to include an index dial shaped like a circular cap and mounted in a hollow transparent cylindrical housing, and an angled pointer suspended over an angled top-view index dial portion and a side-view index dial portion of the index dial for enabling the user to view the readings of the pressure gauge from the top side as well as the peripheral side of the pressure gauge so as to enhance the convenience of using the gauge.

Abstract: A tire pressure gauge mounting structure is disclosed, which includes a casing and a bottom plate for holding a tire pressure gauge in a vehicle tire, the bottom plate having a first end, a second end, and an extension portion for fastening to the air nozzle or rim of a vehicle tire, the casing having a top wall, a bottom opening, a peripheral wall extended from the top wall around the bottom opening, a front slot in the front part of the peripheral wall for receiving the first end of the bottom plate, a rear slot in the rear part of the peripheral wall for receiving the second end of the bottom plate, and a sloping bottom side notch in the bottom side of the peripheral wall at one lateral side between the front part and the rear part for receiving the extension portion of the bottom plate.