Personal Diagnostics, Inc.

Johnson & Johnson Ultrasound, Inc.

Dean Pappas

Peter M Meserol

Jesse L Acker

Howard F Fidel

Janet G Murnick

A hard copy recorder is provided in which paper or film is moved along a paper path by a motor-driven roller. A tension-measuring dancer measures paper or film tension. The position of the dancer is sensed by an optical sensor, which produces a signal representative of paper or film tension. The paper or film tension signal is used to selectively couple one signal from a number of sources of predetermined different frequencies to the motor to control its speed in accordance with the sensed paper tension.

Hard copy recorder paper speed control

Self-sufficient incubation assembly for the in vitro cultivation of microorganisms such as bacteria and for being energized by a self-contained energy source, including a heater for heating means, such as a culture growth dish assembly or a cuvette, for receiving a culture growth medium seeded with microorganisms, to a physiological temperature to cultivate the microorganisms, and electrical circuitry which interconnects the heater with the energy source and which includes a temperature control element in intimate physical contact with the seeded culture growth receiving means to cause the temperature of the control element to be substantially the same as the temperature of the medium; the electrical circuit in operation produces heat and due to its intimate physical contact with the means for receiving the seeded culture growth medium supplements the heating of the medium by the heater and the supplementation reduces the total energy required to be supplied by the energy source to cultivate the microorganisms below that which would be required were the electrical circuitry not to be in intimate physical contact with the culture growth receiving means; and optical means are included to provide an external indication of the growth of the microorganisms within the interior of the assembly.

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Lodi, NJ, United States of America

Dean Pappas