Tire pressure monitoring system having a collapsible casing
US7804396B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2008 |
| Grant date | Sep 28, 2010 |
| Priority date | — |
| Expiry date | Mar 24, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C23/0425
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A tire pressure monitoring device and system includes a support or housing mounted to a rim of a wheel of a vehicle. A casing is movably secured to the support and a pair of spaced magnets are disposed within the casing. The casing is collapsible for varying the length of the casing in response to changes in the tire pressure to move the magnets relative to each other. A sensor is mounted a distance from the casing for sensing a presence of each of the magnets. A controller is in communication with the sensor to determine the length of the casing and the relative movement between the magnets to calculate any changes in tire pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.