Clairol Incorporated

Dictaphone Corporation.

Food Automation-service Techniques, Inc.

Gary G Matison

Bernard G Koether

William Mack

A reusable heat pack containing a solution of a salt hydrate capable of being supercooled to provide heat of crystallization upon inducement of crystallization, the heat pack being provided with a reusable trigger mechanism located on the surface of the heat pack to permit simple and positive initiation of crystallization.

Heat pack apparatus

A temperature controller for use with a fryer of the type comprising a vat containing cooking oil and heater, such as a gas burner or electrical heating element, for heating cooking oil comprises a temperature probe for sensing the temperature of the cooking oil, a temperature selector switch producing a signal corresponding to the selected temperature for the cooking oil and also producing a signal corresponding to a normal temperature approximately 25.degree. below the selected temperature. A heat demand comparator produces a heat demand signal when the temperature of the cooking oil is below the selected temperature. A normal temperature comparator compares the temperature of the cooking oil with the normal temperature and provides a signal when the cooking oil is in the normal temperature range, and a cooking gate inhibits this signal if cooking is taking place in the fryer. A heating element control oscillator provides pulses. A gate passes the heat demand signal to operate the heater in a full on mode when the temperature of the cooking oil is below the normal temperature or when the temperature of cooking oil is below the selected temperature and cooking is taking place in the fryer. If the temperature of the cooking oil is in the normal range and no cooking is taking place in the fryer, the gate gates the pulses from the heating element control oscillator to operate the heater in a pulsed mode which minimizes overshoot of the temperature beyond the selected temperature. A melt cycle comparator determines if the temperature of the cooking oil is below a melt cycle reference temperature of approximately 190.degree., and causes the gate to operate the heating means in the pulsed mode until the melt cycle reference temperature is attained. An open switch comparator monitors the temperature selector switch for an output, and inhibits operation of the heating means if there is no output. An open probe comparator and a shorted probe comparator monitor the probe signal for open or shorted condition, respectively, and also inhibit operation of the heater if the probe is open or shorted.

Temperature controller with pulsed heating during idle

Apparatus for displaying the relative locations of particular information recorded on a movable record medium, such as a magnetic tape, the particular information being represented by a predetermined signal. Electronic pulses are generated corresponding to the movement of predetermined amounts of the record medium past a reference position. A bidirectional counter counts these pulses so as to derive a count representing the amount of medium which has been moved past the reference position, and also representative of the relative position of that record medium which then is juxtaposed the reference position. An indicating signal is produced in response to the predetermined signal; and a memory, having a plurality of storage locations corresponding to the counts of the counter, stores an indicating signal at a storage location which corresponds to the present count of the counter at the time that the indicating signal is produced. A display is responsive to the signals stored in the memory for displaying the locations on the record medium at which the predetermined signals are recorded. In one embodiment, the display not only provides indications of the locations of recorded predetermined signals, but also provides a cursor corresponding to the approximate present position on the record medium whereat information then is being recorded or played back by the user of the apparatus.

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Wilton, CT, United States of America

Gary G Matison