Tire monitoring and keyless entry system
US7019628B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 19, 2002 |
| Grant date | Mar 28, 2006 |
| Priority date | — |
| Expiry date | Nov 19, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C23/0408
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Door opening and closing control information transmitted from a portable transmitter 3 is received at a receiving apparatus 20 to drive a door locking mechanism 4. A tire sensor unit 10 mounted on each tire 2 detects tire pressure and tire internal temperature and radio-transmits those data and identification information. A signal transmitted from the tire sensor unit 10 is received at the receiving device 20 to be supplied to a display device 30. A tire abnormality judging section 31 lights a warning lamp 32 when the air pressure drops to the lower level than an air pressure drop detecting threshold value and the temperature is higher than a temperature rise detecting threshold value. The tire abnormality judging section 31 also sounds an alarm buzzer 33 to inform the tire abnormality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.