TW200508058A - Tire pressure monitoring devices - Google Patents
Tire pressure monitoring devicesInfo
- Publication number
- TW200508058A TW200508058A TW092122880A TW92122880A TW200508058A TW 200508058 A TW200508058 A TW 200508058A TW 092122880 A TW092122880 A TW 092122880A TW 92122880 A TW92122880 A TW 92122880A TW 200508058 A TW200508058 A TW 200508058A
- Authority
- TW
- Taiwan
- Prior art keywords
- pressure
- counter
- tire
- monitoring device
- pressure chamber
- Prior art date
Links
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
A low tire pressure monitoring device (20) that is provided within a tire valve wire stem (210) and methods of using the same. The monitoring device comprises a counter-pressure chamber (21), a flexible membrane (36), a contact member, counter-pressure chamber pin (230), a PC board (29), and a means for emitting a signal. The monitoring device is calibrated by trapping the tire's initial air pressure in the counter-pressure chamber. The monitoring device (20) monitors the pressure differential between the counter-pressure chamber (21) and the tire. When the pressure differential between the pressure in the counter-pressure chamber and the pressure within the tire exceeds a predetermined maximum pressure differential, the flexible membrane (36) is deflected so that an electrical circuit is completed and a warning signal is emitted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW92122880A TWI238124B (en) | 2003-08-20 | 2003-08-20 | Tire pressure monitoring devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW92122880A TWI238124B (en) | 2003-08-20 | 2003-08-20 | Tire pressure monitoring devices |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200508058A true TW200508058A (en) | 2005-03-01 |
TWI238124B TWI238124B (en) | 2005-08-21 |
Family
ID=37000201
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW92122880A TWI238124B (en) | 2003-08-20 | 2003-08-20 | Tire pressure monitoring devices |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI238124B (en) |
-
2003
- 2003-08-20 TW TW92122880A patent/TWI238124B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
TWI238124B (en) | 2005-08-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |