CA2676102A1 - Electronic tire management system - Google Patents
Electronic tire management system Download PDFInfo
- Publication number
- CA2676102A1 CA2676102A1 CA002676102A CA2676102A CA2676102A1 CA 2676102 A1 CA2676102 A1 CA 2676102A1 CA 002676102 A CA002676102 A CA 002676102A CA 2676102 A CA2676102 A CA 2676102A CA 2676102 A1 CA2676102 A1 CA 2676102A1
- Authority
- CA
- Canada
- Prior art keywords
- tire
- microprocessor
- pressure
- tag
- programmed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 claims abstract 9
- 230000000737 periodic effect Effects 0.000 claims abstract 5
- 239000007788 liquid Substances 0.000 claims 8
- 239000012530 fluid Substances 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 2
- 230000003213 activating effect Effects 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0491—Constructional details of means for attaching the control device
- B60C23/0493—Constructional details of means for attaching the control device for attachment on the tyre
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
- B60C23/0433—Radio signals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
- B60C23/0433—Radio signals
- B60C23/0435—Vehicle body mounted circuits, e.g. transceiver or antenna fixed to central console, door, roof, mirror or fender
- B60C23/0438—Vehicle body mounted circuits, e.g. transceiver or antenna fixed to central console, door, roof, mirror or fender comprising signal transmission means, e.g. for a bidirectional communication with a corresponding wheel mounted receiver
- B60C23/0442—Vehicle body mounted circuits, e.g. transceiver or antenna fixed to central console, door, roof, mirror or fender comprising signal transmission means, e.g. for a bidirectional communication with a corresponding wheel mounted receiver the transmitted signal comprises further information, e.g. instruction codes, sensor characteristics or identification data
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
- B60C23/0433—Radio signals
- B60C23/0435—Vehicle body mounted circuits, e.g. transceiver or antenna fixed to central console, door, roof, mirror or fender
- B60C23/0444—Antenna structures, control or arrangements thereof, e.g. for directional antennas, diversity antenna, antenna multiplexing or antennas integrated in fenders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
- B60C23/0433—Radio signals
- B60C23/0447—Wheel or tyre mounted circuits
- B60C23/0454—Means for changing operation mode, e.g. sleep mode, factory mode or energy save mode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
- B60C23/0433—Radio signals
- B60C23/0447—Wheel or tyre mounted circuits
- B60C23/0455—Transmission control of wireless signals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
- B60C23/0433—Radio signals
- B60C23/0447—Wheel or tyre mounted circuits
- B60C23/0455—Transmission control of wireless signals
- B60C23/0457—Transmission control of wireless signals self triggered by timer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
- B60C23/0433—Radio signals
- B60C23/0447—Wheel or tyre mounted circuits
- B60C23/0455—Transmission control of wireless signals
- B60C23/0462—Structure of transmission protocol
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0474—Measurement control, e.g. setting measurement rate or calibrating of sensors; Further processing of measured values, e.g. filtering, compensating or slope monitoring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0474—Measurement control, e.g. setting measurement rate or calibrating of sensors; Further processing of measured values, e.g. filtering, compensating or slope monitoring
- B60C23/0476—Temperature compensation of measured pressure values
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/0061—Accessories, details or auxiliary operations not otherwise provided for
- B29D2030/0072—Attaching fasteners to tyres, e.g. patches, in order to connect devices to tyres
Abstract
An electronic tire maintenance system is provided for measuring a parameter of a device at a first location. The system includes a sensor (18) for measuring the device parameter and generating a data signal representing the measured parameter.
The system also includes a microprocessor (16) coupled to the sensor (18) for activating the sensor (18) on a first periodic basis to measure the device parameter. The microprocessor (16) includes a memory for storing the generated data signal representing the measured parameter. A transmitter/receiver (21) is coupled to the microprocessor (16).
The microprocessor (16) periodically partially awakens to determine, on a second periodic basis, if a received transmission is a valid interrogation signal and, if so, fully awakens and responds to the valid interrogation signal, via the transmitter, by at least transmitting the last stored measured parameter. In one embodiment, the device is a tire tag (14) mounted inside a tire that measures tire data and transmits that data to a remote source (26) in response to an interrogation request, an alert condition, or automatically on a periodic basis.
The system also includes a microprocessor (16) coupled to the sensor (18) for activating the sensor (18) on a first periodic basis to measure the device parameter. The microprocessor (16) includes a memory for storing the generated data signal representing the measured parameter. A transmitter/receiver (21) is coupled to the microprocessor (16).
The microprocessor (16) periodically partially awakens to determine, on a second periodic basis, if a received transmission is a valid interrogation signal and, if so, fully awakens and responds to the valid interrogation signal, via the transmitter, by at least transmitting the last stored measured parameter. In one embodiment, the device is a tire tag (14) mounted inside a tire that measures tire data and transmits that data to a remote source (26) in response to an interrogation request, an alert condition, or automatically on a periodic basis.
Claims (22)
1. A tire tag system comprising:
a sensor for measuring at least one tire parameter;
a microprocessor for causing the tire tag to enter a deep sleep mode in which a minimum number of electrical components are powered to conserve battery power;
the microprocessor, on a periodic basis, enabling only the electrical components necessary to enter a lucid sleep mode, initiate a low-speed clock, and determine if it is time to enter a search mode;
a receiver coupled to the microprocessor;
the microprocessor, on a periodic basis, enabling only the electrical components necessary to enter a search mode, use the low-speed clock, read data from the sensor, if it is time for such a reading, determine if a transmission received by the receiver is likely an interrogation signal from a reader/transceiver (RT) and, if so, enable all of the necessary electrical components required to enter an interrogation mode and initiate a high-speed clock.
a sensor for measuring at least one tire parameter;
a microprocessor for causing the tire tag to enter a deep sleep mode in which a minimum number of electrical components are powered to conserve battery power;
the microprocessor, on a periodic basis, enabling only the electrical components necessary to enter a lucid sleep mode, initiate a low-speed clock, and determine if it is time to enter a search mode;
a receiver coupled to the microprocessor;
the microprocessor, on a periodic basis, enabling only the electrical components necessary to enter a search mode, use the low-speed clock, read data from the sensor, if it is time for such a reading, determine if a transmission received by the receiver is likely an interrogation signal from a reader/transceiver (RT) and, if so, enable all of the necessary electrical components required to enter an interrogation mode and initiate a high-speed clock.
2. The system of claim 1, wherein the microprocessor, in the search mode, determines if it is time to perform an autonomous transmission (AT).
3. The system of claim 1, wherein the microprocessor, in the interrogation mode, determines whether the transmission is a valid interrogation signal and, if so, responds thereto.
4. The system of claim 3, wherein the microprocessor determines whether the transmission is a valid interrogation signal by examining a portion of the transmission and, if the portion of the transmission appears to be a valid interrogation signal, reading the rest of the transmission to verify that the transmission is a valid interrogation signal.
5. The system of claim 4, wherein the microprocessor responds to the valid interrogation signal by transmitting the last stored sensor data.
6. The system of claim 1, wherein the tire tag remains in the search mode looking for likely interrogation signals for a first predetermined period of time and then returns to the deep sleep mode for a second predetermined period of time.
7. The system of claim 1, wherein the microprocessor includes two internal oscillators for producing the low-speed clock for operating the tire tag in the lucid sleep mode and the search mode, and the high-speed clock for operating the tire tag in the interrogation mode.
8. A tire tag comprising:
a microprocessor programmed to:
store the cold-fill temperature of a vehicle tire;
measure the hot-inflation pressure and temperature of the vehicle tire during operation of the tire;
calculate an equivalent cold pressure of the tire using the ideal gas equation:
PV = nRTwhere, P = pressure exerted by the gas in the tire (a variable);
V = volume of the chamber containing the gas (essentially a constant);
n number of moles of gas contained within the tire (a constant);
R a constant specific to the gas contained within the tire;
T temperature of the gas contained within the tire (a variable); and T1/P1 = T2/P2where PI = pressure at time t1 (cold-fill reference pressure) P2 = pressure at time t2 (current hot pressure) T1 = temperature at time t1 (cold-fill reference temperature) T2 = temperature at time t2 (current hot temperature); and compare the calculated equivalent cold pressure with a stored Target Cold-fill Inflation Pressure specified by the manufacturer of the tire to determine if the tire is properly inflated during operation.
a microprocessor programmed to:
store the cold-fill temperature of a vehicle tire;
measure the hot-inflation pressure and temperature of the vehicle tire during operation of the tire;
calculate an equivalent cold pressure of the tire using the ideal gas equation:
PV = nRTwhere, P = pressure exerted by the gas in the tire (a variable);
V = volume of the chamber containing the gas (essentially a constant);
n number of moles of gas contained within the tire (a constant);
R a constant specific to the gas contained within the tire;
T temperature of the gas contained within the tire (a variable); and T1/P1 = T2/P2where PI = pressure at time t1 (cold-fill reference pressure) P2 = pressure at time t2 (current hot pressure) T1 = temperature at time t1 (cold-fill reference temperature) T2 = temperature at time t2 (current hot temperature); and compare the calculated equivalent cold pressure with a stored Target Cold-fill Inflation Pressure specified by the manufacturer of the tire to determine if the tire is properly inflated during operation.
9. A tire tag comprising:
a microprocessor programmed to:
measure the current hot pressure (P2) and the current hot temperature (T2);
and determine an equivalent cold pressure of a tire using P2 and T2.
a microprocessor programmed to:
measure the current hot pressure (P2) and the current hot temperature (T2);
and determine an equivalent cold pressure of a tire using P2 and T2.
10. The tire tag of claim 9, wherein the microprocessor is programmed to use the combined gas laws of Boyle and Charles to calculate the equivalent cold pressure of the tire from P2 and T2.
11. The tire tag of claim 9, wherein the microprocessor is programmed to use altitude pressure data to calculate a cold tire pressure based upon the elevation of the area where the tire tag is used.
12. The tire tag of claim 9, wherein the tire contains a liquid and the microprocessor is programmed to correct P2 to account for vapor pressure in the tire.
13. The tire tag of claim 12, wherein the microprocessor is programmed to determine the partial pressure of the liquid, and to subtract the partial pressure from P2.
14. The tire tag of claim 12, wherein the liquid is water.
15. The tire tag of claim 12, wherein the liquid is a commercial grade fluid.
16. An interrogator comprising:
a microprocessor programmed to:
receive the current hot pressure (P2) and the current hot temperature (T2) readings from a tag; and determine an equivalent cold pressure of a tire using P2 and T2.
a microprocessor programmed to:
receive the current hot pressure (P2) and the current hot temperature (T2) readings from a tag; and determine an equivalent cold pressure of a tire using P2 and T2.
17. The interrogator of claim 16, wherein the microprocessor is programmed to use the combined gas laws of Boyle and Charles to calculate the equivalent cold pressure of the tire from P2 and T2.
18. The interrogator of claim 16, wherein the microprocessor is programmed to use altitude pressure data to calculate a cold tire pressure based upon the elevation of the area where the tire tag is used.
19. The interrogator of claim 16, wherein the tire contains a liquid and the microprocessor is programmed to correct P2 to account for vapor pressure in the tire.
20. The interrogator of claim 19, wherein the microprocessor is programmed to determine the partial pressure of the liquid, and to subtract the partial pressure from P2.
21. The interrogator of claim 19, wherein the liquid is water.
22. The interrogator of claim 19, wherein the liquid is a commercial grade fluid.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2743631A CA2743631A1 (en) | 2000-07-26 | 2001-07-26 | Electronic tire management system |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US22089600P | 2000-07-26 | 2000-07-26 | |
US60/220,896 | 2000-07-26 | ||
CA002417430A CA2417430C (en) | 2000-07-26 | 2001-07-26 | Electronic tire management system |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002417430A Division CA2417430C (en) | 2000-07-26 | 2001-07-26 | Electronic tire management system |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2743631A Division CA2743631A1 (en) | 2000-07-26 | 2001-07-26 | Electronic tire management system |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2676102A1 true CA2676102A1 (en) | 2002-01-31 |
CA2676102C CA2676102C (en) | 2012-01-10 |
Family
ID=22825456
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2676102A Expired - Lifetime CA2676102C (en) | 2000-07-26 | 2001-07-26 | Electronic tire management system |
CA2676101A Expired - Lifetime CA2676101C (en) | 2000-07-26 | 2001-07-26 | Electronic tire management system |
CA2743631A Abandoned CA2743631A1 (en) | 2000-07-26 | 2001-07-26 | Electronic tire management system |
CA002417430A Expired - Lifetime CA2417430C (en) | 2000-07-26 | 2001-07-26 | Electronic tire management system |
Family Applications After (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2676101A Expired - Lifetime CA2676101C (en) | 2000-07-26 | 2001-07-26 | Electronic tire management system |
CA2743631A Abandoned CA2743631A1 (en) | 2000-07-26 | 2001-07-26 | Electronic tire management system |
CA002417430A Expired - Lifetime CA2417430C (en) | 2000-07-26 | 2001-07-26 | Electronic tire management system |
Country Status (12)
Country | Link |
---|---|
US (2) | US6630885B2 (en) |
EP (6) | EP2272688B1 (en) |
JP (5) | JP5099532B2 (en) |
AT (2) | ATE543669T1 (en) |
AU (11) | AU8082301A (en) |
BR (2) | BR122014006372B1 (en) |
CA (4) | CA2676102C (en) |
DE (1) | DE60142907D1 (en) |
ES (3) | ES2348658T3 (en) |
MX (2) | MXPA06014037A (en) |
PE (1) | PE20030228A1 (en) |
WO (1) | WO2002007993A2 (en) |
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2001
- 2001-07-26 CA CA2676102A patent/CA2676102C/en not_active Expired - Lifetime
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2003
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2005
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2011
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2014
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