Abstract: A magnetic head transducer having enhanced signal output and a manufacturing method therefor are provided. The head is manufactured in such a way that the transducing gap has a uniform width along its entire length. The head is comprised of two confronting ferromagnetic pole pieces intimately bonded together with a transducing gap of approximately 1 micron in width extending from the top to the bottom of the head. The individual pole pieces from which the head is formed have opposing major surfaces, each of which has front and rear gap faces which are joined together to form front and rear portions, respectively, of the transducing gap. A nonmagnetic material is deposited on the front gap faces at a thickness equal to the desired width of the gap. The brazing alloy in then formed on the rear gap faces at a thickness of at least five percent greater than the thickness of the nonmagnetic material.

Abstract: A body-mounted measuring instrument senses the heart beat and inner body temperature of a user. The instrument includes a computing circuit and a timekeeping circuit for calculating elapsed time, total heart beats, pulse rate, and difference in body temperature from a predetermined normal temperature. A display is included for indicating various physiological parameters measured and an alarm system warns the user if an excessive heart rate and/or body temperature condition occurs. The instrument is well-suited for an athlete engaged in activities such as running, swimming and bicycling, not only as a safety device to warn the user of the occurrence of a dangerous condition, but also as a distance measuring and velocity computing device. The instrument computes distance travelled by the athlete during an exercise period based on the total number of heart beats and the increase in body temperature occurring during the exercise period.