Wheel arrangement having a pressure sensor
First Claim
1. Wheel arrangement (10) comprising:
- a wheel (14) provided with a rim (23) which is suitable for receiving a tyre, the wheel (14) carrying a sensor (60) for measuring the pressure in the tyre;
a spindle (12) about which the wheel (14) is rotatably mounted by means of bearings (22); and
means (70) of communication between the sensor (60) and means (86), associated with the spindle, for using the measurements carried out by the sensor (60), characterised in that the communication means (70) are suitable for radiofrequency transmission at a frequency higher than 50 kHz and comprise a rotating antenna (74) carried by the wheel (14) and a fixed antenna (78) carried by the spindle (12), the two antennae (74, 78) not having their own means of guidance in rotation, and in that the rotating antenna (74) and the fixed antenna (78) are generally annular and are located in the same plane in a concentric manner about the axis (X-X) of rotation of the wheel (14), the average radial distance between the rotating antenna (74) and the fixed antenna (78) exceeding 2 mm.
4 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to a wheel arrangement (10) comprising a wheel (14) having a sensor (60) for measuring pressure in the tyre; a spindle (12) whereby said wheel is rotatably mounted with the aid of bearings (22) around said spindle, and means (70) of communication between the sensor (60) and means (86) for using measures, which are associated with said spindle. Said communication means (70) are adapted to a transmission system with a frequency higher than 50 kHz comprising a rotating antenna (74) which is supported by the wheel (14) and a fixed antenna. The two antennae (74,78) do not have their own rotational guiding means The antennae (74,78) are generally annular and disposed in a concentric manner on the same level around the wheel (14) axis (X-X) of rotation, the average radial distance between the antennae (74,78) exceeding 2 mm.
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Citations
8 Claims
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1. Wheel arrangement (10) comprising:
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a wheel (14) provided with a rim (23) which is suitable for receiving a tyre, the wheel (14) carrying a sensor (60) for measuring the pressure in the tyre;
a spindle (12) about which the wheel (14) is rotatably mounted by means of bearings (22); and
means (70) of communication between the sensor (60) and means (86), associated with the spindle, for using the measurements carried out by the sensor (60), characterised in that the communication means (70) are suitable for radiofrequency transmission at a frequency higher than 50 kHz and comprise a rotating antenna (74) carried by the wheel (14) and a fixed antenna (78) carried by the spindle (12), the two antennae (74, 78) not having their own means of guidance in rotation, and in that the rotating antenna (74) and the fixed antenna (78) are generally annular and are located in the same plane in a concentric manner about the axis (X-X) of rotation of the wheel (14), the average radial distance between the rotating antenna (74) and the fixed antenna (78) exceeding 2 mm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification