Device for transmission and evaluation of measurement signals for the tire pressure of motor vehicles
US5033295A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1989 |
| Grant date | Jul 23, 1991 |
| Priority date | — |
| Expiry date | Feb 4, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C23/0428
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In a device for the transmission and evaluation of measurement signals for the tire pressure of tubless tires mounted rims in single and twin wheels of motor vehicles which comprises a pressure sensor (6) arranged in the rim wall, which pressure sensor (6) is electrically connected with a signal transmitter coil (8) arranged at the rim (3), as well as a signal pick-up coil (20) of a high-frequency resonant circuit signal evaluating arrangement connected with the motor vehicle in the area of the axle so as to be stationary, it is provided for the purpose of enabling signal detection also when stationary and for problem-free application to twin tires, that a first repeater coil (15), which is electrically connected with a second repeater coil (17), is arranged in the area of the signal transmitter coil (8) at the hub (12) carrying the rim (3), which hub (12) is connected with the latter so as to be fixed with respect to rotation relative to it, wherein the second repeater coil (17) is constructed as a toroidal coil whose coil axis (18) coincides with the hub axis (11), wherein the stationary signal pick-up coil (20) is arranged in the magnetic field area of the second repeater coil (…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.