Tire condition monitoring apparatus

• US 6,774,777 B2
• Filed: 04/24/2002
• Issued: 08/10/2004
• Est. Priority Date: 11/28/2001
• Status: Expired due to Fees

• Current Assignee: Pacific Industrial Company Limited
• Original Assignee: Pacific Industrial Company Limited
• Inventors: Tsujita, Yasuhisa
• Primary Examiner(s): La, Anh V.
• Application Number:
  US10/131,373
• Publication Number:
  US 20030098788A1
• Time in Patent Office: 839 Days
• Field of Search: 340/442, 340/443, 340/444, 340/445, 340/446, 340/447, 340/448, 731/46, 731/462, 731/463, 731/464, 731/465, 731/468, 116/34.R, 116/34.A, 116/34.B, 152/152.1
• US Class Current: 340/445
• CPC Class Codes: B60C 23/0433 Radio signals
• CPC Class Codes: B60C 23/0444 Antenna structures, control or arrangements thereof, e.g. for directional antennas, diversity antenna, antenna multiplexing or antennas integrated in fenders

Abstract

A tire condition monitoring apparatus monitors the condition of a tire of a vehicle. The apparatus includes a transmitter, a receiving antenna, and a receiver. The transmitter wirelessly transmits data indicating the condition of the tire. The receiving antenna receives the data transmitted by the transmitter. The receiving antenna is attached to a non-metallic body of the vehicle that is located close to the tire. The receiver is installed in the vehicle for processing the data received by the receiving antenna.

Claims

1. An apparatus for monitoring the condition of a tire of a vehicle, comprising:

a transmitter, which is installed in the tire, wherein the transmitter wirelessly transmits data indicating the condition of the tire;

a receiving antenna, wherein the receiving antenna receives the data transmitted by the transmitter, and the receiving antenna is attached to a non-metallic body of the vehicle that is located close to the tire; and

a receiver installed in the vehicle and connected to the receiving antenna by a cable, wherein the receiver processes the data received by the receiving antenna and the receiving antenna is remote from any receiver carried by the vehicle, wherein the non-metallic body is a mud guard and the receiving antenna is built in the mud guard.

2. The apparatus according to claim 1, wherein the receiving antenna is installed in the non-metallic body such that the receiving antenna is invisible from behind the vehicle.

3. The apparatus according to claim 1, wherein the receiving antenna is located at the side of the mud guard that faces the tire of the vehicle.

4. An apparatus for monitoring the condition of a tire of a vehicle, comprising:

a transmitter, which is installed in the tire, wherein the transmitter wirelessly transmits data indicating the condition of the tire;

a receiving antenna, wherein the receiving antenna receives the data transmitted by the transmitter, and the receiving antenna is attached to a non-metallic body of the vehicle that is located close to the tire;

and a receiver installed in the vehicle and connected to the receiving antenna by a cable, wherein the receiver processes the data received by the receiving antenna and the receiving antenna is remote from any receiver carried by the vehicle, wherein the non-metallic body is a mud guard and a deflection stopper is attached to the mud guard that stops deflection of the mud guard, and the deflection stopper functions also as the receiving antenna.

5. The apparatus according to claim 4, wherein the deflection stopper is electrically insulated from a body frame of the vehicle by an insulating body.

6. The apparatus according to claim 4, wherein the receiving antenna is installed in the non-metallic body such that the receiving antenna is invisible from behind the vehicle.

7. The apparatus according to claim 4, wherein the receiving antenna is located at the side of the mud guard that faces the tire of the vehicle.

8. An apparatus for monitoring air pressure of a tire of a vehicle, comprising:

a transmitter, wherein the transmitter wirelessly transmits data indicating the air pressure of the tire, and the transmitter includes a sensor for acquiring air pressure data of the tire;

a receiving antenna, wherein the receiving antenna receives the data transmitted by the transmitter, and the receiving antenna is attached to a mud guard of the vehicle that is located close to the tire; and

a receiver installed in the vehicle and connected to the receiving antenna by cable, wherein the receiver processes the data received by the receiving antenna and no receiver is located on the mud guard with the receiving antenna, wherein the receiving antenna is built in the mud guard.

9. The apparatus according to claim 8, wherein the receiving antenna is installed in the non-metallic body such that the receiving antenna is invisible from behind the vehicle.

10. The apparatus according to claim 8, wherein the receiving antenna is located at the side of the mud guard that faces the tire of the vehicle.

11. An apparatus for monitoring air pressure of a tire of a vehicle, comprising:

a transmitter, wherein the transmitter wirelessly transmits data indicating the air pressure of the tire, and the transmitter includes a sensor for acquiring air pressure data of the tire;

a receiving antenna, wherein the receiving antenna receives the data transmitted by the transmitter, and the receiving antenna is attached to a mud guard of the vehicle that is located close to the tire; and

a receiver installed in the vehicle and connected to the receiving antenna by cable, wherein the receiver processes the data received by the receiving antenna and no receiver is located on the mud guard with the receiving antenna, wherein a deflection stopper is attached to the mud guard that stops deflection of the mud guard, and the deflection stopper functions also as the receiving antenna.

12. The apparatus according to claim 11, wherein the deflection stopper is electrically insulated from a body frame of the vehicle by an insulating body.

13. The apparatus according to claim 11, wherein the receiving antenna is installed in the non-metallic body such that the receiving antenna is invisible from behind the vehicle.

14. The apparatus according to claim 11, wherein the receiving antenna is located at the side of the mud guard that faces the tire of the vehicle.