Abstract: A training device for golfers comprising a belt of gum-rubber or similar elastic material forms an adjustable loop about one arm over the respective shoulder, is wound under tension substantially diagonally across the back down to and around the lower waist in the hip region for at least one full turn and is retained about the upper buttocks area of the hip region by being adjustably fastened to itself. The device promotes proper coordination between body and limb parts during a swing and builds muscle-memory of correct movements and sequence thereof without being unduly constrictive in a golfer's activities.

Abstract: An apparatus for selecting a floor, and slowing down and leveling an elevator is described. At least one wire or rod extends vertically along the elevator shaft. The wire or rod is of a nonmagnetic material and has magnetic coatings thereon along selected segments of its length. A number of magnetic sensors are mounted to the elevator. A circuit responsive to the sensor outputs produces control signals dependent on the length of each segment of magnetic coating.