System for residual tire life prediction by ultrasound
US4089226A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1977 |
| Grant date | May 16, 1978 |
| Priority date | — |
| Expiry date | Mar 10, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S73/901
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A residual tire life prediction system uses a clock to trigger a bang generator that provides pulses of electrical energy to a pulse-echo transducer. The transducer converts pulses of electrical energy to pulses of ultrasonic vibration. The transducer is located on the tread of a steel belted tire to transmit pulses of ultrasonic energy into the tire and to receive reflected ultrasonic energy from plies of the tire casing. The transducer converts the reflected ultrasonic energy to provide bursts of electrical signals. The transducer is connected to a time varying gain control circuit that has its output connected via a full-wave rectifier to a first gate and to an input of a voltage level detector. The clock is also connected to a first time-delay circuit that is operative after a delay, subsequent to the pulse of the bang generator, to enable a second gate, connected to the output of the voltage level detector, that provides a signal, when it receives the signal based on the reflection from the outer steel belt, to a second time-delay circuit that provides an enable signal at its output after a predetermined delay for a predetermined period of time to the first gate to open it for…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.