Abstract: A vehicle includes a front wheel assembly and a rear wheel assembly having different outer diameters. A wheel position identifying device includes a reception circuit and processing circuitry. The reception circuit is configured to receive a first transmission signal and a second transmission signal. The first transmission signal is transmitted from a transmitter attached to the front wheel assembly at a specific rotational position of the front wheel assembly. The second transmission signal is transmitted from a transmitter attached to the rear wheel assembly at a specific rotational position of the rear wheel assembly. The processing circuitry is configured to determine whether each of the transmitters is attached to the front wheel assembly or the rear wheel assembly based on a reception interval of the first transmission signal and a reception interval of the second transmission signal.

Abstract: A water-drinking state identification device includes: a change rate computing unit configured to compute a temperature change rate that is a change amount per unit time of an intragastric temperature measured by a temperature sensor disposed in a stomach of an animal; a first timing identification unit configured to identify, as a first timing, a timing at which the temperature change rate exceeds a first prescribed change amount and becomes negative; a second timing identification unit configured to identify, as a second timing, a timing at which the intragastric temperature is equal to or higher than a prescribed temperature and an absolute value of the temperature change rate falls within a second prescribed change amount after the first timing; and a water-drinking value computing unit configured to compute a water-drinking value that is a substitute value for an amount of water drunk between the first timing and the second timing.

Abstract: Electric equipment includes: a command input unit to which a switching command is input contactlessly from an outside; and a mode switcher to switch an electric circuit between a normal operation mode and a sleep mode in response to the switching command. The normal operation mode includes the normal operation mode in an unlocked state and the normal operation mode in a locked state in which switching to the sleep mode is prohibited. The switching command includes: a first switching command for switching to the sleep mode, a second switching command for switching to the normal operation mode in the unlocked state, and a third switching command for switching to the normal operation mode in the locked state, having a longer input time than the second switching command. The switching command uses magnetism, light, or a sound wave as a carrier. The command input unit includes a carrier detection sensor.

Abstract: A transmitter includes a data generating unit configured to generate transmission data, a transmitting unit configured to transmit the transmission data to a receiver that includes a setting unit that sets a threshold for controlling a vehicle in accordance with the type of the tire valve, and a controlling unit that causes the transmitting unit to transmit the transmission data. The transmission data is information with which the setting unit sets the threshold. The transmission data includes valve identification information for causing the setting unit to recognize the type of the tire valve to which the transmitter is attached.

Abstract: A container includes: a pair of container elements to be mated to constitute the container; and a hinge connecting the pair of container elements with mating surfaces of the pair of container elements pointing unidirectionally, wherein at least a part of the hinge is pulled when the pair of container elements are mated, the hinge has a V-shaped groove including a pair of inner surfaces, and a thickness gradually decreasing toward a bottom of the V-shaped groove, the bottom of the V-shaped groove is pulled when the pair of container elements are mated, the hinge has two of the V-shaped grooves, the hinge includes a protrusion located between the two V-shaped grooves, the protrusion has a vertex located lower than the mating surfaces, and of the four inner surfaces of the two V-shaped grooves, two inner surfaces farthest from each other are partially brought into contact with each other.

Abstract: A transmitter is attached to each of wheel assemblies of a vehicle and transmits transmission data to a receiver. The transmitter includes a nonvolatile memory that stores multiple types of protocols, a volatile memory that stores selection information, and a transmitting unit. The selection information represents a protocol that is selected from the multiple types of protocols stored in the nonvolatile memory and corresponds to the receiver. The transmitting unit transmits transmission data conforming to a protocol. The transmitting unit transmits the transmission data conforming to the protocol represented by the selection information when the selection information is stored in the volatile memory. Also, the transmitting unit transmits the transmission data conforming to all the protocols stored in the nonvolatile memory when the selection information is not stored in the volatile memory.

Abstract: A metering valve includes: a high-pressure partition wall to isolate a storage region from an atmospheric pressure space; an internal partition wall arranged inside the high-pressure partition wall and forming a metering chamber partitioned from the storage region; a stem linearly movably supported and biased to be positioned at an origin position; a first seal hole penetrating the high-pressure partition wall to extend over the atmospheric pressure space and the metering chamber with a first seal portion linearly movably supporting a first intermediate portion; a second seal hole penetrating the internal partition wall to extend over the metering chamber and the storage region with a second seal portion linearly movably supporting a second intermediate portion; and a starting-end-side stem internal flow path formed inside the stem and extending from a starting end of the stem to the second intermediate portion, the starting end being always positioned in the storage region.

Abstract: A tire valve includes: a valve stem passed through a valve mount hole of a rim and screwed with a nut, a retaining part extending sideways from a proximal end of the valve stem, an electronic device having a connection part that fits onto an outer side of the retaining part, a support ring set on the valve stem, the support ring and a portion of the connection part being sandwiched between the retaining part and an opening edge of the valve mount hole by fastening the nut, and an interference avoidance part formed by cutting off part of an outer circumferential surface of the support ring. The support ring and electronic device include guide parts which slide on each other by fastening the nut thereby causing the support ring and electronic device to approach to guide the support ring and electronic device toward the normal rotational position.

Abstract: A parasitic element is used in a transmitter configured to transmit data. The transmitter includes a loop antenna to which power is supplied and a housing that accommodates the loop antenna. The parasitic element is disposed to be located outside the housing. The parasitic element includes a loop portion that is a part of the parasitic element, and an extended section that is a part other than the loop portion. The loop portion is electromagnetically coupled to the loop antenna. The extended section includes a first end of the parasitic element as an open end.

Abstract: An antenna unit is included in a transmitter configured to transmit data. The antenna unit includes a loop antenna and a helical parasitic element. The loop antenna is disposed within a housing of the transmitter and is supplied with power. The helical parasitic element is disposed outside the housing. The helical parasitic element is electromagnetically coupled to the loop antenna and includes two open ends.

Abstract: A transmitter is configured to be integrated with a tire valve attached to a wheel. The transmitter includes a data generating unit, a transmitting unit, and a controlling unit. The data generating unit is configured to generate transmission data. The transmitting unit is configured to transmit the transmission data to a receiver that includes a setting unit that sets a threshold related to control of a vehicle in accordance with a type of the wheel. The controlling unit causes the transmitting unit to transmit the transmission data. The transmission data includes wheel identification information. The wheel identification information is required by the setting unit when setting the threshold and allows the setting unit to recognize the type of the wheel to which the tire valve is attached.

Abstract: An in-tire electric device having a bracket and an electric circuit unit detachably held by the bracket includes: an engagement protrusion and an engagement hole provided on the electric circuit unit and the bracket to engage with each other to restrict, through a two-step operation where the electric circuit unit is moved in a first direction and then moved or rotated in a second direction intersecting the first direction, all movements and rotations except for a reverse of the second direction; a retainer mounted on the bracket from a direction intersecting the second direction and facing the electric circuit unit in the second direction to restrict the electric circuit unit from moving in the second direction; and retainer locking portions formed on the bracket and the retainer and engage with each other by elastic deformation of one of the retainer locking portions to lock the retainer to the bracket.

Abstract: A wireless terminal includes a pressure sensor, a wireless circuit, and a case accommodating the pressure sensor and the wireless circuit in a waterproof manner, and is left inside a stomach of a livestock animal to measure pressure inside the stomach and wirelessly transmit acquired pressure data. The case includes a cylindrical case body and a lid member closing an opening of the case body. The lid member has a measurement hole extending between inside and outside of the lid member and a protection wall part located outside of the case body. The measurement hole has a pressure-receiving pressure measurement part inside for measurement of the pressure and is closed. The measurement hole includes a first linear part and a second linear part intersecting in T shape with the first linear part, and has distal ends open to an outer face of the protection wall part.

Abstract: A metering valve includes: a high-pressure partition wall to isolate a storage region from an atmospheric pressure space; an internal partition wall arranged inside the high-pressure partition wall and forming a metering chamber partitioned from the storage region; a stem linearly movably supported and biased to be positioned at an origin position; a first seal hole penetrating the high-pressure partition wall to extend over the atmospheric pressure space and the metering chamber with a first seal portion linearly movably supporting a first intermediate portion; a second seal hole penetrating the internal partition wall to extend over the metering chamber and the storage region with a second seal portion linearly movably supporting a second intermediate portion; and a starting-end-side stem internal flow path formed inside the stem and extending from a starting end of the stem to the second intermediate portion, the starting end being always positioned in the storage region.

Abstract: A transmitter is coupled to each of a plurality of wheel assemblies included in a vehicle. The transmitter is configured to function in one of a plurality of formats that are selectable by a command from a trigger device. The transmitter includes a pressure sensor configured to detect the tire pressure, a memory that stores an ID code, a transmission unit configured to transmit a signal, a controller configured to control the transmitter, and a trigger reception unit configured to receive a trigger signal including the command from the trigger device. The controller is configured so that when the trigger reception unit receives a trigger signal including a command designating a format of the transmitter, the controller has the transmitter function in the designated format and has the transmission unit transmit the signal including the ID code to register the ID code to an in-vehicle receiver.

Abstract: A power generator includes: a stator fixed to a wheel; and a rotor disposed coaxially with the wheel and rotatably supported by the stator. The power generator generates electric power by relative rotation between the stator and the rotor, and supplies the electric power to an electric device attached to the wheel. The power generator further includes: a blade portion fixed to the rotor; a container portion that is fixed to one of the rotor and the stator and houses the blade portion; and liquid which is contained in the container portion in an amount smaller than a volume of the container portion and in which at least a part of the blade portion is immersed.

Abstract: A power supply device includes: a generator including a stator which rotates with a tire wheel, and a rotor which rotates around a rotation axis of the tire wheel; an inertial component fixed to the rotor and configured to maintain a consistent attitude by an own weight of the inertial component; a circuit board fixed to the tire wheel and arranged such that a plate thickness direction is oriented parallel to the rotation axis; a rectifier circuit mounted on the circuit board and rectifies a current output from the generator to supply the current to a load; a plurality of smoothing capacitors provided in the rectifier circuit and positioned on a common imaginary circle around the rotation axis so that the plurality of smoothing capacitors as a whole has a center of gravity located in a central area of rotation.

Abstract: The transmitter is arranged in a tire attached to a wheel and configured to transmit data to a receiver. The transmitter includes an obtaining section configured to obtain a detection result of the sensor, a generating section configured to generate the data including the detection result of the sensor, a transmitting section configured to transmit the data generated by the generating section, and an organic power generation element that is a power source of the transmitter. The organic power generation element is configured to generate power through a chemical reaction with organic matter contained in a fuel solution accommodated in the tire.

Abstract: A bracket that is pressed against and fixed to an outer peripheral surface of a rim of a tire wheel by a belt wound around the outer peripheral surface of the rim, and detachably holds an electric circuit unit includes: a pair of rim contact portions that are provided at both ends in a circumferential direction of the rim in a rim facing surface facing the outer peripheral surface of the rim, and come into contact with the outer peripheral surface of the rim in such a way as to cause a portion between the both ends to be spaced apart from the outer peripheral surface of the rim.