The present invention regards a group for bead releasing a tyred wheel and/or for thrusting a portion of a tyre (T) of a tyred wheel (TW), and such group comprises a base, a supporting column rising from the base, a tool-supporting arm extending from the supporting column and a bead releasing and/or thrust tool supported by the tool-supporting arm.

Methods of measuring a thickness of a material are disclosed. An oscillating signal at a measurement frequency is applied to a circuit including an inductive component and a capacitive component provided using a pair of capacitive sensor electrodes adjacent the material. The measurement frequency is less than a resonant frequency of the circuit, and the resonant frequency is based on the inductive component and the capacitive component. Information regarding a value of a measured parameter is generated based on applying the oscillating signal at the measurement frequency to the circuit. A value of the measured parameter is related to the thickness of the material.

Provided is a tire testing apparatus capable of accurately and easily measuring a load which a tire receives from a road surface. The tire testing apparatus includes a plate buried in a road surface with which a tire is in contact, at least one ground-contact-force sensor measuring a ground-contact force during a contact of the tire, and at least one plate sensor measuring a load applied to the plate. According to the tire testing device, a ground-contact force of the tire can be measured by the ground-contact-force sensor and a load which the tire applies to the plate can be measured by the plate sensor.

A rotating body load measuring device (100) according to the present invention detects a force acting on a rotating body (30) that is formed in a columnar shape and rotates around a central axis (L60) of a shaft body (60) protruding from a center of an end face, in a state where a main load is applied to the rotating body (30) in a main load direction (P) that is one direction in a radial direction, and includes a load cell (70) having a measurement center (C70) and capable of measuring forces acting in at least three directions with the measurement center (C70) as a reference, in which the load cell (70) is disposed such that the measurement center (C70) and the central axis (L60) overlap when viewed in the main load direction (P), and is connected to the shaft body (60).

The invention is directed to a valve stem system (1) for tubeless wheels. The valve stem system (1) includes a valve stem body (2) with a first end (3) and a second end (4), wherein the second end (4) is located in a tire/rim-volume when mounted at the wheel. A first valve (5) is arranged at the second end (4) of the valve stem body (2). The first valve (5) is a self-sealing one-way valve. A second valve (10) is removably mountable at the first end (3) and is, when mounted, at least partially housed in the valve stem body (2). The second valve (10) comprises a valve stem core inserted in the valve stem body (2) and can be added or removed from the valve stem body (2) while pressure is maintained within the tire by the first valve (5). The invention further concerns a probe (30) for a valve stem system, a method to test the amount of sealant in a wheel and a refilling assembly (80) for a wheel.

An apparatus for use in measuring a parameter is provided that includes a pry end, a handle, and a sensor that detects a parameter imparted onto the apparatus when the handle is grasped and the pry end is between a tire and a wheel. An output member is also included that outputs the parameter received from the sensor. The handle, the sensor and the output member are part of an electronic torque wrench.

A method of measuring thickness of a material generally includes applying an oscillating signal to a first electrode at a fixed frequency, passing the signal through the material to a second electrode, and measuring the magnitude of the signal reflected back to the first electrode. The thickness of the material is determined based on the measured magnitude of the reflected signal by: 1) comparing the determined magnitude to a predetermined baseline to establish a difference; and 2) identifying the thickness based on the difference. Related apparatuses are also disclosed. The material may be a vehicle tire.

Methods of measuring a thickness of a material are disclosed. An oscillating signal at a measurement frequency is applied to a circuit including an inductive component and a capacitive component provided using a pair of capacitive sensor electrodes adjacent the material. The measurement frequency is less than a resonant frequency of the circuit, and the resonant frequency is based on the inductive component and the capacitive component. Information regarding a value of a measured parameter is generated based on applying the oscillating signal at the measurement frequency to the circuit. A value of the measured parameter is related to the thickness of the material.

A method of measuring thickness of a material generally includes applying an oscillating signal to a first electrode at a fixed frequency, passing the signal through the material to a second electrode, and measuring the magnitude of the signal reflected back to the first electrode. The thickness of the material is determined based on the measured magnitude of the reflected signal by: 1) comparing the determined magnitude to a predetermined baseline to establish a difference; and 2) identifying the thickness based on the difference. Related apparatuses are also disclosed. The material may be a vehicle tire.

A rotating body load measuring device (100) according to the present invention detects a force acting on a rotating body (30) that is formed in a columnar shape and rotates around a central axis (L60) of a shaft body (60) protruding from a center of an end face, in a state where a main load is applied to the rotating body (30) in a main load direction (P) that is one direction in a radial direction, and includes a load cell (70) having a measurement center (C70) and capable of measuring forces acting in at least three directions with the measurement center (C70) as a reference, in which the load cell (70) is disposed such that the measurement center (C70) and the central axis (L60) overlap when viewed in the main load direction (P), and is connected to the shaft body (60).