Abstract: A golfing aid system at least partially configured to be mounted on a golfer is provided. The system includes an optical system, an output configured to provide audio and/or visual information, a human wearable support, a first compass mounted on the wearable support, an optical system. The golfing aid system is configured to, when the wearable support is worn by the golfer, obtain a first compass heading from the first compass for a target location observable through the optical system, obtain a second compass heading when the golfer is in a golfing stance, determine, based on at least the first and second compass headings, whether a part of the body that supports the human wearable support is substantially in alignment with a direction, and provide feedback through the output, the feedback being configured to indicate whether or not the golfer is substantially aligned with the direction.

Abstract: A golfing aid system at least partially configured to be mounted on a golfer is provided. The system includes an optical system, an output configured to provide audio and/or visual information, a human wearable support, a first compass mounted on the wearable support, an optical system. The golfing aid system is configured to, when the wearable support is worn by the golfer, obtain a first compass heading from the first compass for a target location observable through the optical system, obtain a second compass heading when the golfer is in a golfing stance, determine, based on at least the first and second compass headings, whether a part of the body that supports the human wearable support is substantially in alignment with a direction, and provide feedback through the output, the feedback being configured to indicate whether or not the golfer is substantially aligned with the direction.

Abstract: An electronic system for incorporation in a racquet that monitors a player's ability to hit balls within a specific region on the string bed. A plurality of sensors are positioned around the periphery of the racquet string bed for detecting the relative time-of-arrival of transverse waves produced by impacts of balls on the string bed. A circuit incorporated within the racquet receive the signals from the sensors and provide a plurality of signals from which the position of impact on the string bed may be calculated. The system incorporates a low power microprocessor that is programmed to compute the ball impact location from the signals produced by the sensors. A display device on the racquet displays information derived from the calculated impact location to permit players to assess their performance as related to hitting a predetermined region.

Abstract: A motorized lifting mechanism for the rake arms of a sedimentation tank which comprise spaced vertical pairs of pivot link arms interconnecting the rake arm frame to a main center rake arm drive cage and wherein the rake arm frame is in turn interconnected to a motorized jack lifting screw by means of a cable to raise the arm upon the pivoting of the pivot arms.