Jet Spray Corp.

Cambridge Applied Systems, Inc.

Wayne Warren

William A Arzberger

Michael J Riley

Robert E Kasameyer

Martin Segal

Electrical current driven through one or the other of two coils ( and ) draws a ferromagnetic bob ( ) along a chamber ( ) containing a liquid whose viscosity is to be measured. The current that flows through the coil includes an AC component, and the resultant magnetic field causes in the other coil an AC voltage whose magnitude depends on the bob's position. A position detector ( ) monitors the electromotive force thus induced and concludes that the ferromagnetic bob has reached a predetermined end-of-travel position when the magnitude of the electromotive force has fallen to a predetermined fraction the maximum value that it had attained during the stroke, and a coil driver ( ) switches current drive from one coil to the other so as to begin driving the bob in the opposite direction. If the position detector fails to detect the bob's reaching the end-of-travel position within a predetermined timeout interval, the coil driver reverses coil drive despite the absence of such detection. The predetermined timeout interval's duration is ordinarily determined as a function of the bob-stroke duration that recent valid end-of-travel detections have defined. When the first timeout occurs, though, the time-out-interval duration is the same, relatively short value for each of the plurality of strokes in a clean-out period, after which the timeout-interval duration is immediately increased to a relatively high value.

Fast-recovery viscometer

A system for dispensing and controlling the concentrate of a juice product in which the product is made up of a juice concentrate and water. The concentrate is dispensed by pump operation and the water is dispensed by solenoid operation. The system basically provides for the control of the solenoid and the pump and for the initiation of a dispensing cycle so as to initiate operation of the solenoid and pump substantially at the same time. A timer responds for operating the solenoid and pump over a preselected dispensing period. The control of the pump to provide concentration control is provided by a speed control circuit having multiple selectable positions for providing multiple pump speeds so as to in turn provide variable concentration of the final dispensed juice product.

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Lexington, MA, United States of America

Wayne Warren