Roller transducer apparatus
US6688178B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2002 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | Apr 11, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/2632
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A roller transducer assembly comprises at least one core section and each core section comprises a transducer. Oil is retained within the roller transducer assembly and in particular an oil kerf isolates each core section from an outer portion of the roller transducer assembly having a nylon roller tube which is surrounded by a urethane tire outer covering. The outer portion of the roller transducer assembly rotates about each stationary core section. A pair of the ultrasonic roller transducer assemblies are arranged to provide signals for generating an ultrasonic image of an article such as a board or a log passing between the pair of ultrasonic roller transducer assemblies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.