Off-the-road tire temperature and pressure monitoring system
First Claim
1. Apparatus for measuring a pressure and a temperature of gases in an interior of a tire mounted to a wheel, comprising:
- a housing attached to the wheel by at least one magnet and enclosed within the interior of the tire;
pressure and temperature sensors mechanically coupled to the housing and sensing a current pressure and a current temperature of the gases in the interior of the tire;
a transmitter mechanically coupled to the housing and conveying to outside the tire data indicative of the current pressure and the current temperature of gases in the interior of the tire; and
a receiver receiving the data indicative of the current pressure and the current temperature of gases in the interior of the tire.
1 Assignment
0 Petitions
Accused Products
Abstract
A tire pressure and temperature measurement system adapts a Y-block (30) to an existing valve stem (20). One branch (44) of the Y-block accepts a conventional valve core (42) and another branch (38) accepts a flexible tubular temperature sensor (36) that leads “down the throat” of the existing valve stem and into the interior of a tire (14, 18). A second embodiment is adapted for use on inside dual tires (18). Making a measurement entails attaching a pressure sensor (40) to the valve stem and attaching a hand-held processor (112) to the sensors. The hand-held processor reads the current tire pressure and temperature; executes a program (Eqs. 1-6) that accounts for measured and target temperatures, vapor pressures, and gas compressibility; aid indicates how much pressure to add or subtract to the tire to achieve an accurate final tire operating pressure. In third and fourth embodiments, respective spherical (70) and U-shaped channel (120) protective housings enclosing pressure and temperature sensors (72), a controller 76, and a data transceiver (74) are loosely placed or attached by magnets (122) within the interior of a tire (126). A remote measurement system (80) receives at another data transceiver (108) pressure and temperature data transmitted from inside the tire while the vehicle is moving and conveys the data to a processor (112) for executing the above-described program.
87 Citations
23 Claims
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1. Apparatus for measuring a pressure and a temperature of gases in an interior of a tire mounted to a wheel, comprising:
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a housing attached to the wheel by at least one magnet and enclosed within the interior of the tire;
pressure and temperature sensors mechanically coupled to the housing and sensing a current pressure and a current temperature of the gases in the interior of the tire;
a transmitter mechanically coupled to the housing and conveying to outside the tire data indicative of the current pressure and the current temperature of gases in the interior of the tire; and
a receiver receiving the data indicative of the current pressure and the current temperature of gases in the interior of the tire. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for measuring a pressure and a temperature of gases in an interior of a tire that is mounted to a wheel, comprising:
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mounting a generally U-shaped housing magnetically to the wheel and within the interior of the tire;
mounting pressure and temperature sensors to the housing;
sensing a current pressure and a current temperature of the gases in the interior of the tire;
transmitting to outside the tire data indicative of the current pressure and the current temperature of gases in the interior of the tire; and
receiving the data indicative of the current pressure and the current temperature of gases in the interior of the tire. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. Apparatus for measuring a pressure and a temperature of gases in an interior of a tire mounted to a wheel, comprising:
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a housing attached to the wheel by at least one magnet and enclosed within the interior of the tire;
pressure and temperature sensors coupled to the housing and sensing a current pressure and a current temperature of the gases in the interior of the tire;
a transmitter coupled to the housing and conveying to outside the tire data indicative of the current pressure and the current temperature of gases in the interior of the tire;
a receiver receiving the data indicative of the current pressure and the current temperature of gases in the interior of the tire; and
a processor coupled to the receiver, the processor processing the data indicative of the current pressure and current temperature of gases in the interior of the tire and generating for a predetermined future temperature of the interior of the tire an accurate prediction of a future pressure of the gases in the interior of the tire. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification