Tire pressure gauge
First Claim
1. A tire pressure gauge, comprising:
- a port adapted to couple to and be mounted on a vehicle tire valve stem and to open a valve in the valve stem;
a chamber in physical communication with said port;
a pressure transducer in said chamber for detecting a pressure of a fluid within the vehicle tire and providing an output signal representative of the detected pressure;
a processor physically coupled to said pressure transducer for receiving said output signal, and for providing a processor output signal indicative of a value of the detected pressure;
a wake circuit for receiving a wireless wake signal and being physically coupled to the processor for providing a signal causing the processor to change from a powered down state to an activated state; and
a display physically coupled to said processor for providing a visible indication of detected pressure value in accordance with the processor output signal.
1 Assignment
0 Petitions
Accused Products
Abstract
A tire pressure gauge for attachment to a valve stem includes a wall defining a chamber having a first port adapted to sealingly engage a valve stem, a probe being mounted in the first port so as to open a valve of a valve stem sealingly engaged by the first port, a pressure sensor in the chamber, a memory, a display physically supported on the device, a processor being operatively coupled to said display, pressure sensor and memory; and code being stored in the memory and operable by the processor to: retrieve at least one value indicative of a first threshold tire pressure from the memory, determine a pressure sensed by the pressure sensor, and, cause the display to present information indicative of a relative value of the sensed value to the first threshold tire pressure.
50 Citations
29 Claims
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1. A tire pressure gauge, comprising:
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a port adapted to couple to and be mounted on a vehicle tire valve stem and to open a valve in the valve stem;
a chamber in physical communication with said port;
a pressure transducer in said chamber for detecting a pressure of a fluid within the vehicle tire and providing an output signal representative of the detected pressure;
a processor physically coupled to said pressure transducer for receiving said output signal, and for providing a processor output signal indicative of a value of the detected pressure;
a wake circuit for receiving a wireless wake signal and being physically coupled to the processor for providing a signal causing the processor to change from a powered down state to an activated state; and
a display physically coupled to said processor for providing a visible indication of detected pressure value in accordance with the processor output signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A tire pressure gauge, comprising:
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a port adapted to couple to and be mounted on a vehicle tire valve stem and to open a valve in the valve stem;
a chamber in physical communication with said port;
a pressure transducer in said chamber for detecting a pressure of a fluid within the vehicle tire and providing an output signal representative of the detected pressure;
a processor physically coupled to said pressure transducer for receiving said output signal, and for providing a processor output signal indicative of a value of the detected pressure;
a memory for storing a parameter;
a wireless receiver, a display physically coupled to said processor for providing a visible indication of detected pressure value in accordance with the processor output signal;
wherein the processor is adapted to cause a value of the parameter received by said receiver to be stored by said memory, and wherein said processor is adapted to determine said processor output signal based on said parameter and said detected pressure. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A tire pressure gauge, comprising:
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a port adapted to couple to and be mounted on a vehicle tire valve stem and to open a valve in the valve stem;
a chamber in physical communication with said port;
an active pressure transducer in said chamber for detecting a pressure of a fluid within the vehicle tire and providing an output signal representative of the detected tire pressure;
a reference transducer at ambient pressure for detecting ambient air pressure and providing an output signal representative of the detected ambient pressure;
a processor physically coupled to said active pressure transducer and said reference transducer for receiving said output signals, and for retrieving a stored ambient pressure value from memory;
executing a compensation algorithm based on said stored ambient pressure value and said detected ambient pressure;
compensating said detected tire pressure based on the result of the compensation algorithm;
providing an output signal indicative of a value of the compensated detected tire pressure; and
a display physically coupled to said processor for providing a visible indication of the compensated detected tire pressure value in accordance with the processor output signal. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A system for monitoring tire pressure, comprising:
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a tire pressure gauge, comprising;
a port adapted to couple to and be mounted on a vehicle tire valve stem and to open a valve in the valve stem;
a chamber in physical communication with said port;
a pressure transducer in said chamber for detecting a pressure of a fluid within the vehicle tire and providing an output signal representative of the detected pressure;
a processor physically coupled to said pressure transducer for receiving said output signal, and for providing a processor output signal indicative of a value of the detected pressure; and
a display physically coupled to said processor for providing a visible indication of detected pressure value in accordance with the processor output signal;
a receiver for receiving a wirelessly transmitted signal indicating a pressure threshold value;
a memory for storing said pressure threshold value;
wherein the processor is adapted to determine said processor output signal based on said parameter and said detected pressure; and
a programmer unit having user inputs, a transmitter for transmitting a wireless signal capable of being received by said receiver, and a programmer unit processor, said processor being adapted to cause a threshold pressure value received at said user inputs to be transmitted by said transmitter. - View Dependent Claims (22, 23, 24, 25, 26)
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27. A method for displaying an indication relating to the fluid pressure within a vehicle tire having a valve stem, comprising the steps of:
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receiving at a wake circuit a wireless wake signal;
receiving from said wake circuit an activation signal;
receiving via a wired connection from an active pressure transducer in a chamber, the chamber being in physical communication with a port adapted to couple to and be mounted on the valve stem and to open a valve in the valve stem, an output signal representative of pressure in the tire; and
outputting a signal via a wired connection to a display to cause the display to provide a visible indication of the detected pressure.
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28. A method of providing an indication relating to the fluid pressure within a vehicle tire having a valve stem, comprising the steps of:
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receiving via wireless communication information related to fluid pressure;
storing in memory a parameter based on the received information;
receiving via a wired connection from an active pressure transducer in a chamber, the chamber being in physical communication with a port adapted to couple to and be mounted on the valve stem and to open a valve in the valve stem, an output signal representative of detected pressure in the tire;
retrieving the stored parameter from memory;
determining, based on the parameter and the signal representative of pressure in the tire, a processor output signal, and providing the processor output signal via a wired connection to a display, the processor output signal causing the display to provide a visible indication of the detected pressure.
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29. A method of providing an indication relating to the fluid pressure within a vehicle tire having a valve stem, comprising the steps of:
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receiving via a wired connection from an active pressure transducer in a chamber, the chamber being in physical communication with a port adapted to couple to and be mounted on the valve stem and to open a valve in the valve stem, an output signal representative of detected pressure in the tire;
receiving via a wired connection from a reference pressure transducer at ambient pressure and temperature, an output signal representative of a detected ambient pressure;
retrieving a stored reference pressure from memory;
executing a compensation algorithm based on said stored reference pressure and said detected ambient pressure;
compensating said detected tire pressure based on the result of the compensation algorithm to obtain a compensated detected tire pressure value; and
providing an output signal indicative of a value of the compensated detected tire pressure to cause a display physically coupled to said processor to provide a visible indication of the compensated detected tire pressure value.
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Specification