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US 8,516,904 B2Granted
Torque measurement
AssigneeROLLS-ROYCE plc
InventorsWerner Schiffers, John R. Webster
Life of this patent
Estimating the term…
Abstract
A strain sensor apparatus for a rotatable shaft including a radiation emitter/receiver, a vibration element attached to the shaft and a reflector that is positioned to reflect radiation onto the vibration element.
Claims11
A strain sensor apparatus for a rotatable shaft, the strain sensor apparatus comprising:
- a radiation emitter/receiver;
- a vibration element attached to the shaft;
- and
- a reflector, wherein
- the reflector is positioned on the shaft opposite the vibration element to reflect radiation emitted by the emitter/receiver onto the vibration element.
2 more elements
Dependencies are inferred from the claim text.