Abstract: A putter blade has multiple tracking grooves that extend forwardly in the blade bottom wall; also the blade has an anti-slippage groove that extends laterally in the blade bottom wall; also, the connection of the shaft to the blade, with the shaft axis passing closer to the blade toe than to the blade heel and to the rear of the blade, provides alignment advantages during stroking.

Abstract: A portable, automatic serving device for table tennis is provided which includes a robot server and ball capture net. The robot includes a serving head which is mounted for rotation with respect to the body along a plurality of axes. The head is provided with balls from a passageway in the robot operatively connected between the head and the base of the robot. A collapsible net is provided for capturing balls returned by a player. The robot is positioned within and cooperates with the net so that return balls are fed automatically to the head. The robot is operated by three motors, which may be controlled individually to serve sequentially a plurality of balls to a player for practice or for sport. The robot construction provides for a variety of ball delivery techniques, all of which are controlled simply during operation.

Abstract: A ball-hitting instrument for playing ball games, comprises a handle and a flat head part (preferably a tennis racket bearing a screen in the head part) and an apparatus for programming and controlling the seizing of the handle and the guiding of the instrument during a player's motions for hitting a ball. The apparatus is mounted on the handle and contains an electronic circuit comprising an on-off switch, a perceivable signals-emitting device such as a buzzer, an integrated circuit chip, a potentiometer and four noiseless, quick-response switches each having a travel path and a circuit-making mercury or magnetic body movable back and forth along that path to make or break circuit.

Abstract: A perceptual motor training device uses a non-tactile method of training a patient who has suffered some interruption of his neurological functions to recognize the spatial position and orientation of his body and/or the parts thereof. The device includes an alarm that is activated when a portion of the patient's body moves out of a predetermined test area. The alarm alerts the patient without touching the patient so the patient is forced to use his own internal systems to determine the location and orientation of his body and the parts thereof. The test area is defined by beams and/or fields and can include test areas within the overall test area. The device can also be used in conjunction with the training of gross motor developmental sequences as well.

Abstract: An electrocardiographic electrode, which is held in close contact with a person's skin for deriving a weak voltage from an inner part of the person, is disclosed. The electrode includes a viscous base member having a central opening to be held in close contact with the person's skin and a reinforcement member bonded to the front surface of the viscous base member to close the opening, and an electrode member provided in the reinforcement member. The viscous base member with the opening is viscous both on the back side, to be held in close contact with the skin, and on the front side, to be coupled to the lead connector.

Abstract: A batting aid system (10) is provided for training a baseball player to properly swing a baseball bat. The batting aid system (10) includes a longitudinally extended handle member (20) defining a longitudinal axis (15). Handle member (20) is configured to simulate the contour of a conventional baseball bat, having cylindrical hand grip portion (22), a conical intermediate portion (23) extending to a truncated cylindrical distal end (24). An audible feedback system (30) having a weighted wheel member (32) is pivotedly coupled to the distal end (24) of handle member (20) for providing an audible output responsive to rotative displacement of handle member (20) about its longitudinal axis (15). The audible output is generated by a sound generating system (40) having a pawl (44) coupled to the handle member (20) and positionally disposed to contact the geartooth-like projections (46) of ratchet member (42), ratchet member (42) being coupled to weighted wheel member (32) and rotatively displaced therewith.

Abstract: Putter head has bore behind and parallel to the face. Pin is disposed in bore having weight adjustable therealong. Modification includes tail centrally backward from main portion, the tail having a bore also enclosing a pin having a weight mounted adjustably on it. Changing or adjusting the weights can compensate for conditions of green and individual stroke faults.

Abstract: A gravity activated golf ball storage, dispensing and teeing apparatus comprises a cylinder for storing a plurality of golf balls, an articulated arm rotatable about a horizontal axis for delivering a golf ball onto a tee and an open wall tube which delivers the golf balls in an aligned serial array from the cylinder to the arm. The arm is weighted to be stabilized in a substantially vertical orientation until the golfer pulls the arm toward the tee and into a substantially horizontal position. An aperature, slightly smaller than a golf ball, in the open wall tube, prevents more than one ball from being dispensed onto the tee during each rotation of the arm. A preferred embodiment provides a golf ball storage container having spring-biased ball retention flaps to hold a predetermined number of balls until the container is attached to the cylinder and releases the balls.

Abstract: A portable practicing putting green 44 having a putting surface band 11, a cup 91 at one end of it, a square angle 22 on the other end of it, and a rebound bar 32 replacably put on either side of the square angle or near the hole, for rebounding golf ball 47. The square angle 22 is bolted to one end of the putting surface band 11 and to its standing side is outwardly bonded a rubber plate 27 which is perpendicular to the center line 17 of the putting surface band 11. The rebound bar has four exposed planar side surfaces 31, 35, 37, 39 with three 35, 37, 39 of them bonded to a thin, medium, and thick rubber plates, respectively to provide different rebounding forces, and the remaining exposed 31 remaining bare. When it is being carried or stored, the rebound square bar is put in between the inner sides of the square angle 22 and the square angle and rebound bar 32 are wound up inside putting surface band 11 to minimize its volume.

Abstract: A scorer's table for sporting events including a table top supported by legs, and three panels mounted at the front of the table and extending downwardly to the floor. The center panel has a front surface with a message which is painted or otherwise permanently displayed, such as the logo of a sports team or the name of an arena. The two end panels, one on each side of the center panel, each have display screens operable to display virtually any type of graphic or word message. The display screens are independently controlled by an electronic controller which is programmable to produce a message on each of the display screens and then change such messages as desired during the course of the sports event.