A TPMS sensor with an externally replaceable battery is disclosed. The valve stem facilitates battery replacement with a valve stem core designed to removably secure a battery within the valve stem and a sensor configured with an electrical connection designed to connect the sensor to power from the battery. The valve stem has an interior cavity configured to retain the valve stem core. The battery may be at least partially retained within the valve stem. The sensor may be configured in a sensor body connected to an end of the valve stem distal from the valve stem core. The electrical connection may comprise a spring-loaded terminal configured to connect or disconnect the sensor and battery as the battery is inserted or removed from the valve stem through a valve stem end proximal to the valve stem core, permitting battery replacement without removing or deflating a tire configured with the sensor.

A device for transport of air in the tire P or close to it consisting of a chamber K in the shape of a hollow compressible channel, placed along at least a part of the tire perimeter, characterized by the fact that a ring OK is placed at the inner side of the chamber K with the distance of its outer side from the tire axis of rotation equal to 1 to 1.1 multiple of the distance of the bottom side of the chamber K from the axis of rotation of the tire P.

A system for powering an electronic device within a tire is provided, the system comprising: a generator electrically connected to an electrically conductive wheel, the tire being mounted upon the wheel; the tire including bead portions, sidewalls, shoulders, a tread oriented in a tread region, an inner surface, and a metallic cord oriented within an interior of the tire; at least one conductive element extending from a bead portion and piercing into the interior of the tire and electrically connecting to the metallic cord; at least one electronic device within the vehicle tire; and at least one ground path extending through a thickness of the vehicle tire from the inner surface to an exterior surface in a contact patch of the tread; and wherein the at least one electronic device is electrically connected to the metallic cord and the at least one ground path.

A system for powering an electronic device within a tire is provided, the system comprising: a generator; an electrically conductive wheel coated in a non-conductive coating, the wheel including rim lips, wherein one of the rim lips includes a conductive area; the tire including bead portions, sidewalls, shoulders, a tread oriented in a tread region, and an inner surface; a conductive element extending from a bead portion, and in contact with the inner surface; an electronic device within the vehicle tire; and a ground path extending through a thickness of the vehicle tire from the inner surface to an exterior surface in a contact patch of the tread; wherein the generator is electrically connected to the electrically conductive wheel; wherein the electronic device is electrically connected to the conductive element and the ground path; and wherein the conducive element contacts the conductive area.

A wireless vehicle data communications device is adapted for mounting on a wheel hub assembly of a vehicle. The vehicle data communications device includes a housing, a microprocessor located inside the housing, a signal transmitting device, and a signal receiving device. A self-generating electrical power supply is located within the housing and functions to supply electrical power to components of the vehicle data communications device.

A system and method provide automatic vehicle tire air pressure monitoring, warning, and maintenance for a vehicle. The vehicle includes a controller, wheel rims having tires coupled to wheel hubs, an air compressor configured to inflate the tires, a pressure sensor contained within each wheel rim on a vehicle for measuring air pressure within a tire located on each wheel rim, the compressor coupled to the tire rims for providing needed pressurized air, the compressor, an air pressure line connecting the compressor to the wheel rims, a driver display providing a warning to a driver, and a controller. The controller reads an air pressure value of the air pressure within each tire, determines whether the air pressure values within each tire, when one or more of the air pressure values are below the pre-determined value, activates the compressor to add air to each of the four tires needing the air pressure, and provides the driver a visual status of the air pressure values within in each of the tires and a visual status of the compressor state.

A system and method provide automatic vehicle tire air pressure monitoring, warning, and maintenance for a vehicle. The vehicle includes a controller, wheel rims having tires coupled to wheel hubs, an air compressor configured to inflate the tires, a pressure sensor contained within each wheel rim on a vehicle for measuring air pressure within a tire located on each wheel rim, the compressor coupled to the tire rims for providing needed pressurized air, the compressor, an air pressure line connecting the compressor to the wheel rims, a driver display providing a warning to a driver, and a controller. The controller reads an air pressure value of the air pressure within each tire, determines whether the air pressure values within each tire, when one or more of the air pressure values are below the pre-determined value, activates the compressor to add air to each of the four tires needing the air pressure, and provides the driver a visual status of the air pressure values within in each of the tires and a visual status of the compressor state.

A system for detecting pressure and wear conditions of tires that includes a module positioned inside each wheel of a vehicle. The module includes sensors, a processor, a transmitter and a power source for powering the module. The output from the sensors in each wheel is fed to the processors of each wheel for data processing and the data is transmitted by the transmitter in each wheel to a receiver and data processor located outside of the wheels. The data processor is designed to analyze the received processed data from the modules, and to provide alerts based on stored information and by comparing the processed data from the first wheel with the processed data from the second wheel.

A pressure measurement device (1) comprising a housing (20) extending around an electronic card (30) provided with a pressure sensor (40); the housing (20) co-operating with a first face (31) of the electronic card (30) to define a first sealed volume (3); the housing (20) also co-operating with a second face (32) of the electronic card (30) that is opposite from the first face (31) to define a second sealed volume (4); the housing (20) including at least one first channel (24) putting the medium (5) outside the housing (20) into fluid flow communication with the first sealed volume (3); the electronic card (30) including at least one second channel (33) putting the first volume (3) into fluid flow communication with the second volume (4); and the connection between the housing (20) and the electronic card (30) being arranged to allow relative movement between the housing (20) and the electronic card.

An electrical connection system for connecting two electrical devices, including at least one elastic contact integral with a first electrical device and in elastic abutment against a second electrical device so as to form an electrical connection. The at least one elastic contact being able to deform in a deformation plane. At least one wall placed so that the elastic contact is placed between the wall and the second electrical device in the deformation plane. The at least one elastic contact, the at least one wall, and the second electrical device being coated in a protective material after assembly.