Abstract: This air cell cushion has a pair of side air cells extending upwardly from the upper surface side of the base member at both end sides in the lateral direction of the base member. The side air cells have a larger front-rear direction size than in the lateral direction thereof. Also, each side air cell is configured to inflate outward in the lateral direction. By this, in a case in which the side air cells face the armrests of the wheel chair, when the side air cells are inflated outward in the lateral direction, the outer side surfaces of the side air cells abut against or become adjacent to the armrests.

Abstract: An object of the present invention is to provide an air cell which is capable of detecting that the upper end side and the lower end side of the air bag are nearer than a predetermined distance. This air cell has an air bag, a base member to which the lower end portion of the air bag is attached, an air chamber AR configured by the air bag and the upper surface of the base member, a thin film portion which forms the bottom surface of the air chamber and capable of deforming elastically in the up-and-down direction, an extending member configured to extend upwardly from the upper surface of the thin film portion, detecting means which is provided under the thin film portion and which detects downward deformation of the thin film portion.

Abstract: This air cell cushion has a pair of side air cells extending upwardly from the upper surface side of the base member at both end sides in the lateral direction of the base member. The side air cells have a larger front-rear direction size than in the lateral direction thereof. Also, each side air cell is configured to inflate outward in the lateral direction. By this, in a case in which the side air cells face the armrests of the wheel chair, when the side air cells are inflated outward in the lateral direction, the outer side surfaces of the side air cells abut against or become adjacent to the armrests.

Abstract: An object of the present invention is to provide an air cell which is capable of detecting that the upper end side and the lower end side of the air bag are nearer than a predetermined distance. This air cell has a air bag, a base member to which the lower end portion of the air bag is attached, a air chamber AR configured by the air bag and the upper surface of the base member, a thin film portion which forms the bottom surface of the air chamber and capable of deforming elastically in the up-and-down direction, an extending member configured to extend upwardly from the upper surface of the shin film, detecting means which is provided under the thin film portion and which detects downward deformation of the thin film portion.

Abstract: A tire information transmitter measures ambient information in a tire cavity region including at least pressure to wirelessly transmit to outside the tire cavity region. The tire transmitter comprises: a sensor unit having a pressure sensor for measuring a pressure in the tire cavity region; a control unit for comparing a level of a pressure signal representing pressure measured by the sensor unit with a threshold value and for generating an operation signal indicating that the tire information transmitter is operating; and a transmitting unit for wirelessly transmitting the pressure signal or the operation signal.

Abstract: A wheel information-acquiring system (10) sends wheel information, such as a tire inner pressure, together with preset identification information from a transmitter provided on a wheel installed on a motor vehicle and causes a receiver to receive the transmitted information. In the wheel information-acquiring system, a setting device (60) transmits by wireless an ID, which the setting device is causing a transmitter (16a) to set, to the transmitter (16a) and causes the transmitter (16a) to set the ID. The setting device then transmits by wireless this ID and wheel installation position information, which is separately set and input, to the receiver, causing the receiver to map the ID and the wheel installation position information and then set and register the result of the mapping. The setting device also can acquire an ID unique to the transmitter (16a) and transmit the ID and wheel installation position information to the receiver.

Abstract: A tire information transmitter is mounted in a tire cavity region surrounded by a tire inner circumference surface and a wheel wall surface and senses atmospheric information in the tire cavity region to wirelessly transmit to outside the tire cavity region. The transmitter has a sensor for sensing atmospheric information in the tire cavity region, a circuit board having a processing circuit for processing a sensed signal from the sensor and having a transmitting circuit for wirelessly transmitting a processed signal and a battery for supplying power for driving the circuits. The battery is made as an encapsulated body of a thin plate shape, having a thin plate surface, by encapsulating battery components with an insulation film, and the encapsulated body has an area ratio of the thin plate surface to a thickness of the thin plate shape of not less than 200 mm, and a mass of not more than 5 g. A tire information acquiring system has the transmitter and a receiver for receiving a signal from the transmitter.

Abstract: A tire information transmitter measures ambient information in a tire cavity region including at least pressure to wirelessly transmit to outside the tire cavity region. The tire transmitter comprises: a sensor unit having a pressure sensor for measuring a pressure in the tire cavity region; a control unit for comparing a level of a pressure signal representing pressure measured by the sensor unit with a threshold value and for generating an operation signal indicating that the tire information transmitter is operating; and a transmitting unit for wirelessly transmitting the pressure signal or the operation signal.

Abstract: A tire information transmitter measures tire inflation pressure in a tire cavity region and wirelessly transmits it outside the tire cavity region. A control unit of the transmitter controls the transmitting of the measured pressure and compares the level of the pressure signal with a threshold value continually after a supply of driving power is started. The transmitter has a comparing mode in which the operation signal is transmitted at a first time interval, and a transmitting mode in which the pressure signal is transmitted at a second time interval, which is shorter than the first time interval. Further, the control unit irreversibly shifts from the comparing mode to the transmitting mode, once the level of the pressure signal exceeds the threshold value as a result of the comparing.

Abstract: A tire condition monitoring system, having antennas attached onto each of both right and left side ends of a vehicle windshield, the antennas being connected to a monitoring unit installed near a driver's seat, by which installation on the monitoring unit side can be easily achieved. This enables positive reception of electric waves transmitted from the sensor device by either of the antennas of the right and left side portions of the windshield, thus permitting the monitoring unit to achieve a desired high receiving probability. Accordingly, the tire condition monitoring system provides easy installation without need of attaching any receiving antenna of the monitoring unit at a position adaptable to the sensor device of each tire, as well as attainment of a desired receiving probability at the monitoring unit.

Abstract: Wheel assembly identification indicating members and first communication devices are respectively mounted to wheel assemblies mounted to a vehicle body. The indicating members have characteristic appearances, which are different among the wheel assemblies and which make the respective wheel assemblies identifiable in external appearance. The first communication devices transmit by wireless transmission pieces of wheel assembly information on the respective wheel assemblies as well as pieces of identification information held by the respective first communication devices. A second communication device provide on the vehicle body side receives the pieces of wheel assembly information and the pieces of identification information and specifies the respective wheel assemblies from which the pieces of wheel assembly information are transmitted, by referring to a correlation between prestored piece of information on characteristic appearances of the indicating members and the pieces of identification information.

Abstract: A wheel information-acquiring system (10) sends wheel information, such as a tire inner pressure, together with preset identification information from a transmitter provided on a wheel installed on a motor vehicle and causes a receiver to receive the transmitted information. In the wheel information-acquiring system, a setting device (60) transmits by wireless an ID, which the setting device is causing a transmitter (16a) to set, to the transmitter (16a) and causes the transmitter (16a) to set the ID. The setting device then transmits by wireless this ID and wheel installation position information, which is separately set and input, to the receiver, causing the receiver to map the ID and the wheel installation position information and then set and register the result of the mapping. The setting device also can acquire an ID unique to the transmitter (16a) and transmit the ID and wheel installation position information to the receiver.

Abstract: A tire information transmitter measures tire inflation pressure in a tire cavity region and wirelessly transmits it outside the tire cavity region. A control unit of the transmitter controls the transmitting of the measured pressure and compares the level of the pressure signal with a threshold value continually after a supply of driving power is started. The transmitter has a comparing mode in which the operation signal is transmitted at a first time interval, and a transmitting mode in which the pressure signal is transmitted at a second time interval, which is shorter than the first time interval. Further, the control unit irreversibly shifts from the comparing mode to the transmitting mode, once the level of the pressure signal exceeds the threshold value as a result of the comparing.

Abstract: A wheel assembly informing system includes: a plurality of wheel assembly identification indicating members that are respectively mounted to a plurality of wheel assemblies mounted to a vehicle body and have different characteristic appearances among the plurality of wheel assemblies, the characteristic appearances making the respective wheel assemblies mutually distinguishable in external appearance; a plurality of first communication devices that are respectively mounted to the plurality of wheel assemblies and transmit by wireless pieces of wheel assembly information on the respective wheel assemblies as well as self-held pieces of identification information from the wheel assembly sides; a storage device that is provided on the vehicle body side and stores a correlation between pieces of information on the characteristic appearances of the wheel assembly identification indicating members mounted to the plurality of wheel assemblies respectively and the pieces of identification information held by the firs