Claims
- 1. An air pressure detecting device for detecting air pressure of a wheel of a vehicle which has a tire tube disposed in a tire, the air pressure detecting device being disposed between the tire tube and the rim of the wheel for detecting the air pressure of the tire comprising:
an annular seat mounted adjacent to an opening defined in said tire tube; a lid member held in removably fitting engagement with the seat; a detecting and transmitting unit integrally mounted in the lid member for detecting air pressure in said tire tube and transmitting pressure information out of the detecting and transmitting unit.
- 2. The air pressure detecting device according to claim 1, wherein an air valve is integrally mounted on said lid member for introducing air into said tire tube.
- 3. The air pressure detecting device according to claim 1, wherein the detecting and transmitting unit includes a pressure sensor for detecting the tire pressure.
- 4. The air pressure detecting device according to claim 3, and further including a detecting circuit operatively connected to the pressure sensor for converting pressure information into an electrical signal.
- 5. The air pressure detecting device according to claim 4, and further including a transmitting circuit for transmitting the electrical signal from the detecting circuit as a radio wave.
- 6. The air pressure detecting device according to claim 5, and further including a power source operatively connected for energizing said detecting and transmitting unit.
- 7. The air pressure detecting device according to claim 1, and further including a fastener for securing the tire tube to the seat.
- 8. The air pressure detecting device according to claim 1, and further including an air valve operatively connected to said lid member for supplying air to said tire tube.
- 9. An air pressure detecting device for detecting air pressure of a wheel of a vehicle during operation of the vehicle, the air pressure detecting device being disposed between the tire tube and the rim of the wheel for detecting the air pressure of the tire comprising:
a seat secured to an opening in said tire tube; a lid member mounted on said seat; a detecting and transmitting unit secured to the lid member for detecting air pressure in said tire tube and transmitting pressure information out of the detecting and transmitting unit.
- 10. The air pressure detecting device according to claim 9, wherein an air valve is integrally mounted on said lid member for introducing air into said tire tube.
- 11. The air pressure detecting device according to claim 9, wherein the detecting and transmitting unit includes a pressure sensor for detecting the tire pressure.
- 12. The air pressure detecting device according to claim 11, and further including a detecting circuit operatively connected to the pressure sensor for converting pressure information into an electrical signal.
- 13. The air pressure detecting device according to claim 12, and further including a transmitting circuit for transmitting the electrical signal from the detecting circuit as a radio wave.
- 14. The air pressure detecting device according to claim 13, and further including a power source operatively connected for energizing said detecting and transmitting unit.
- 15. The air pressure detecting device according to claim 9, and further including a fastener for securing the tire tube to the seat.
- 16. The air pressure detecting device according to claim 9, and further including an air valve operatively connected to said lid member for supplying air to said tire tube.
Priority Claims (2)
Number |
Date |
Country |
Kind |
2000-353006 |
Nov 2000 |
JP |
|
2001-016383 |
Jan 2001 |
JP |
|
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] The present application claims priority under 35 USC 119 to Japanese Patent Application No. 2000-353006 filed on Nov. 20, 2000 and Japanese Patent Application No. 2001-016383 filed on Jan. 24, 2001 the entire contents thereof are hereby incorporated by reference.