Abstract: A digital readout electronic blood pressure and pulse rate monitor. A finger cuff occluder is pressurized by a single stroke plunger and an automatic vent means provides linear pressure decay while a pressure transducer measures the pressure and converts it to an electronic signal. A sound transducer senses sound transmitted from the cuff through the pressure tube, and an electronic system distinguishes the various characteristics of the sound to measure the systolic and diastolic pressures. The electronic system also measures the pulse rate. All three readings are digitally displayed only if several predetermined conditions indicating a proper reading are fulfilled.

Abstract: A pulse rate monitor for use while exercising. A clothespin type finger clip remote from the counting and display unit grips the user's finger in a predictable, mechanically stable manner. A light emitting diode, strobed to reduce battery drain, transmits infrared radiation through the finger, and electronic circuitry monitors the modulation of radiation caused by changes in capillaries with each heart beat. The circuitry includes an active load for the phototransistor, which, by means of bandpass filtered feedback, enhances heart beat signal and reduces sensitivity to ambient light, noise, and variations in phototransistor characteristics.

Abstract: A size-adjustable ski boot and skate shoe which adjusts both the width and length of the front of the boot to accommodate various sizes of feet. A clam-shell construction of widthwise halves of the toe attached to quarter sections of the sole permits both length and width movement of both the sole and shell of the boot. When fasteners on the sole plate are loosened, a screw adjustment is used to move the sole plate with attached half-toe longitudinally and laterally to increase the boot size. An alternate system uses replaceable toe sections of varying sizes.