Sensor for a pneumatic tire
First Claim
1. A sensor for counting rotations of a pneumatic tire on a vehicle which comprises a rigid base member adapted for attachment to the radially inner surface of a tire tread region, at least two spaced-apart mounting links, a forced sensing member disposed between said mounting links for producing a countable output signal and means for processing said output signal such that on rotation of the tire, a force variation is applied to the force sensing member due to the changes in circumferential radius of curvature of the tire tread in contact with the road.
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Accused Products
Abstract
A sensor for counting the rotations of a pneumatic tire on a vehicle comprising a rigid base member adapted for attachment to the radially inner surface of the tire tread region, at least two spaced-apart mounting links, a force sensing member disposed between said mounting links for producing a countable output signal and means for processing said output signal such that on rotation of the tire, a force variation is applied to the force sensing member due to the changes in circumferential radius of curvature of the tire tread in contact with the road.
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Citations
14 Claims
- 1. A sensor for counting rotations of a pneumatic tire on a vehicle which comprises a rigid base member adapted for attachment to the radially inner surface of a tire tread region, at least two spaced-apart mounting links, a forced sensing member disposed between said mounting links for producing a countable output signal and means for processing said output signal such that on rotation of the tire, a force variation is applied to the force sensing member due to the changes in circumferential radius of curvature of the tire tread in contact with the road.
- 13. A method of counting rotations of a pneumatic tire on a vehicle comprising using a force sensor mounted on a rigid base member which is attached to a radially inner surface of the tread region of the tire at two points circumferentially in front of and behind the sensor for sensing movement of the inner surface of the tire tread regions adjacent to the sensor as the tread region passes through a tire contact patch on the road, taking a countable signal from the sensor, counting each countable signal to produce a result equivalent to the number of rotations of the tire and transmitting the result to a display.
Specification