Abstract: A technique for measuring golf swing tempo or clubhead speed for a golfer swinging a golf club through a tee area. Two parallel infrared (IR) transmitters transmit respective IR beams along predetermined lines toward the tee area. Respective IR sensors receive respective IR beams reflected from a reflector mounted to the shaft of the golf club, near the clubhead. Each IR sensors provides a respective output signal indicative of the passage of the golf club through a corresponding IR beam. Predetermined sequences of output signals from the IR sensors are detected and the differences in time between various output signals are measured to provide tempo and clubhead speed values for display on a LCD screen. The speed values can be compensated values as obtained from look-up tables.

Abstract: An improved portable and foldable shelter comprising a structure of tubular members and cross-members forming an assembly having side walls preferably tapered inwardly, a roof or top, and a covering complementary in shape to the assembled structure. Elongated containers are secured to the walls of the shelter and are capable of receiving a heavy substance such as water, sand or elongated segments of heavy material. The containers may be elongated pockets, secured to or incorporated to the shelter, preferably to the covering or incorporated in the side walls of the covering, and located substantially at the lower end of the side wall adjacent to the supporting surface so that the lower portion of the containing means may be close to or touch the supporting surface thus preventing the passage of air or wind underneath the side walls or the floor of the shelter.

Abstract: A golf training device characterized as a miniaturized model of a player arranged to simulate, through hand control, swinging action, as well as weight shifting, through a full 270.degree. to 360.degree. back and forward range, for instructional and amusement purposes. The device permits selective club replacement and, with the provision of a resilient or sponge base, demonstrates and/or permits upwardly and downwardly positioning of the club on the ball. The device incorporates a supporting portable hitting surface representative of both the fairway and rough terrain. The device further includes simulated hands for grasping the club, where the latter, if improperly held, results in undesired hooking, slicing or like effects.