Abstract: An exercise device conveniently measures, monitors, and reports electromyograph (EMG) information to the user, for use in effectively strengthening selected muscles. The exercise device includes a sensor circuit responsive to electrical activity in tensioning muscles, and a control circuit responsive to an output signal produced by the sensor circuit. In a preferred embodiment the control circuit regulates an audio device, by attenuating the audio device output signal when the sensor output signal declines to below a preset threshold. Alternatively, the control circuit selectively activates an indication device, such as a vibrator, when the sensor output signal falls too low. The exercise device provides information as to muscle activity to the user in an entertaining fashion, and in a way that the user is not required to pay constant attention and refer to an output meter or other conventional display.

Abstract: A system for steering and braking a jet ski watercraft using flaps that may be independently or uniformly extended from a forward area of the watercraft hull at or below the waterline during operation.

Abstract: An exercise device conveniently measures, monitors, and reports electromyograph (EMG) information to the user, for use in effectively strengthening selected muscles. The exercise device includes a sensor circuit responsive to electrical activity in tensioning muscles, and a control circuit responsive to an output signal produced by the sensor circuit. In a preferred embodiment the control circuit regulates an audio device, by attenuating the audio device output signal when the sensor output signal declines to below a preset threshold. Alternatively, the control circuit selectively activates an indication device, such as a vibrator, when the sensor output signal falls too low. The exercise device provides information as to muscle activity to the user in an entertaining fashion, and in a way that the user is not required to pay constant attention and refer to an output meter or other conventional display.

Abstract: A device with a semi-rigid structural support orthopedically contoured in concavo-convex shape formed on a mold the exact outline of the lumbar area of ones back. The support is covered with resilient material front and back and in the convex area. A fabric cover encloses the device and includes a zipper for convenience of closure. Reversible straps fastened to the cover provide attachment to chairs or seats to assure alignment with the back and maintain integrity of the device.