Saw based tire pressure sensor valve adaptor
First Claim
1. A sensor housing for mounting on an inflation valve of a tire having an inflation duct, comprising:
- a sensor housing having (i) a tube with a fastening end adapted to fasten the housing onto the inflation valve, and (ii) a through passage extending from the fastening end through said sensor housing, the through passage capable of providing a fluid coupling between the inflation duct and the atmosphere surrounding said housing;
a surface acoustic wave (SAW) based pressure sensor mounted within said sensor housing, wherein the SAW based pressure sensor is in fluid communication with the atmosphere surrounding said housing; and
a fastening element with threads formed on said fastening end, adapted to engage an inner surface of said inflation duct, wherein the threads are self tapping and are configured to cut a complementary thread at the mating end of the inflation valve as the sensor housing is screwed in to the valve.
1 Assignment
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Accused Products
Abstract
A SAW based tire pressure sensor assembly comprising a body having a tubular stud 1 formed on an end thereof which is engageable in an inflation tube formed in a tire inflation valve 3 so as to fasten the body to the valve 3. A through passage extends through the stud 1 into said body and is in fluid communication with the atmosphere surrounding the assembly by means of apertures 2 in the sides of the body, thereby providing a fluid coupling between an inflation duct of the inflation valve 3 and the atmosphere surrounding the body. A SAW based pressure sensor is mounted within said body so as to be in fluid communication with the atmosphere surrounding the body, and an antenna 4 is connected to the sensor to enable remote interaction therewith. A grounding plate 5 connected to the antenna is sandwiched between the assembly and has arms which engage against the inner surface of the wheel so as to enhance the sensor antenna earth.
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Citations
16 Claims
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1. A sensor housing for mounting on an inflation valve of a tire having an inflation duct, comprising:
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a sensor housing having (i) a tube with a fastening end adapted to fasten the housing onto the inflation valve, and (ii) a through passage extending from the fastening end through said sensor housing, the through passage capable of providing a fluid coupling between the inflation duct and the atmosphere surrounding said housing; a surface acoustic wave (SAW) based pressure sensor mounted within said sensor housing, wherein the SAW based pressure sensor is in fluid communication with the atmosphere surrounding said housing; and a fastening element with threads formed on said fastening end, adapted to engage an inner surface of said inflation duct, wherein the threads are self tapping and are configured to cut a complementary thread at the mating end of the inflation valve as the sensor housing is screwed in to the valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A sensor housing for mounting on an inflation valve of a tire having an inflation duct, comprising:
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a sensor housing, having (i) a tube having a fastening end adapted to fasten the housing onto said inflation valve, and (ii) a through passage extending from the fastening end through said sensor housing, the through passage capable of providing a fluid coupling between the inflation duct and the atmosphere surrounding said housing; a surface acoustic wave (SAW) based pressure sensor mounted within the sensor housing, wherein the SAW based pressure sensor is in fluid communication with the atmosphere surrounding the sensor housing; a fastening element formed on said fastening end, adapted to engage an inner surface of said inflation duct, the fastening element comprising at least one circumferentially extending ridge; an antenna connected to the SAW sensor and is configured to enable remote interfacing with a sensor; and a grounding plate disposed on the sensor housing, configured to engage an inner surface of a wheel on which the tire is mounted, and configured to enhance antenna earth. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification