Fiberglass collar for data transfer from rotatable shaft
US4982101A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 7, 1989 |
| Grant date | Jan 1, 1991 |
| Priority date | — |
| Expiry date | Dec 7, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L3/108
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Telemetry apparatus for a rotating machine shaft includes a fixed collar of lightweight composite material wrapped on the shaft and having embedded in it telemetry apparatus. Measured data such as torque from a strain gauge sensor is transmitted to a stationary sensor by pulses of infrared signals. An array of photovoltaic cells receives energy from a stationary source to power the rotating telemetry apparatus. All rotating electronics is embedded in the composite material which may be, for example, E-type fiberglass. Such composite material provides a resistance to centrifugal forces due to rotation of the shaft but has sufficient transparency to allow both the transmission of data and power to and from the rotating telemetry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.