Measuring and testing – Dynamometers – Responsive to torque
Reexamination Certificate
2006-03-07
2006-03-07
Noori, Max (Department: 2855)
Measuring and testing
Dynamometers
Responsive to torque
Reexamination Certificate
active
07007560
ABSTRACT:
A method of using a magnetic fluid clutch for torque measurement comprises steps of modulating electric current through a coil of the magnetic fluid clutch to maintain a steady-state quasi-solid phase of a magnetic fluid medium contained within the magnetic fluid clutch when the magnetic fluid clutch is clutched to transmit torque from a torque input end of the clutch to a torque output end of the clutch, thereby ensuring that the torque output end rotates in response to the rotation of the torque input end without relative rotational slippage therebetween; and measuring a deflection value associated with the magnetic fluid clutch. The clutch is thereby used as a combined torque measurement and clutch apparatus.
REFERENCES:
patent: 4969545 (1990-11-01), Hayashi
patent: 5167850 (1992-12-01), Shtarkman
patent: 6645108 (2003-11-01), Gradu
patent: 2003/0094053 (2003-05-01), Anderson
patent: 2003/0216209 (2003-11-01), Gradu
Noori Max
Ogilvy Renault LLP
Pratt & Whitney Canada Corp.
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