Centrifuge with efficiency measuring device

Claim 1

A CENTRIFUGE COMPRISING A CENTRIFUGE ROTOR, A DRIVING MOTOR, DRIVING GEAR MEANS OPERATIVELY INTERPOSED BETWEEN THE MOTOR AND THE ROTOR FOR DRIVING THE ROTOR AT A REQUIRED ROTARY SPEED, MEANS FOR PRODUCING AN ELECTRICAL SIGNAL PROPORTIONAL TO THE INSTANTANEOUS ROTARY SPEED OF SAID ROTOR, CONVERTER MEANS FOR PRODUCING DURING A GIVEN TIME INTERVAL A SIGNAL PROPORTIONAL TO THE SQUARE OF SAID ELECTRICAL SIGNAL, AND MEANS FOR INDICATING SAID SQUARED QUANTITY SUMMED OVER THE TIME OF OPERATION OF THE CENTRIFUGE, WHEREIN SAID MEANS FOR PRODUCING AN ELECTRICAL SIGNAL COMPRISES PULSE TRANSMITTER MEANS COUPLED TO THE ROTOR FOR PRODUCING ELECTRICAL PULSES AT A FREQUENCY PROPORTIONAL TO SAID ROTOR SPEED, SAID CONVERTER MEANS COMPRISING COUNTING MEANS FOR COUNTING PULSES, TIMING MEANS FOR APPLYING SAID PULSES TO SAID COUNTING MEANS DURING SAID GIVEN TIME INTERVALS, CALCULATING MEANS CONNECTED TO SAID COUNTING MEANS FOR PRODUCING A SIGNAL PROPORTIONAL TO THE SQUARE OF THE VALUE OF SAID COUNTED PULSES, SAID INDICATING MEANS INCLUDING FUTHER COUNTING MEANS, AND MEANS FOR APPLYING SAID SQUARED QUANTITY TO SAID FURTHER COUNTING MEANS.