Tire pressure control system
US4562874A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 28, 1984 |
| Grant date | Jan 7, 1986 |
| Priority date | — |
| Expiry date | Feb 28, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8778
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A tire pressure control system having a pressure switch installed in a rim, which pressure switch, as part of a tuned circuit, damps, across an air gap, an HF transmitter, installed in a wheel web and having downstream analysis electronics, the pressure switch having a diaphragm pressure cell with a reference pressure, the diaphragm of which reference cell is subjected on one side to the reference pressure and on the other side to the tire pressure. A valve installed in the pressure switch makes it possible to adjust the reference pressure so that, when filling the tire, the desired tire pressure is simultaneously retained as the new reference pressure in the diaphragm pressure cell for the tire pressure control system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.