Tire pressure warning system
US4734674A · kind A · utility
79Cited by
38References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1985 |
| Grant date | Mar 29, 1988 |
| Priority date | — |
| Expiry date | Apr 8, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C23/0496
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A tire pressure warning system, including a valve stem-mounted tire pressure detector, including means for sensing the tire pressure and means for transmitting an encoded signal when the tire pressure drops below a predetermined level, and a receiver that can receive and recognize the encoded signal, differentiate between various encoded signals, and provide a warning signal to the vehicle operator. The inside of the tire pressure detector is hermetically sealed; inside the sealed portion is a unique on/off switch that can be externally actuated without compromising the seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.