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| Number | Title | Issue Date |
| 5054785 | Game ball support device and piezoelectric ball motion detector A piezoelectric motion detector is disclosed. The device is particularly suitable for use in analyzing a golf ball when hit from a golf tee. A piezoelectric film is affixed to the bottom of a tee having a base. A signal generated by the piezoelectric film... | 10/08/1991 |
| 4775948 | Baseball having inherent speed-measuring capabilities A baseball with a self-contained speed-measuring module positioned within a hollowed-out portion of the solid core of the ball, with the upper portion of the module being a display unit that indicates the speed at which the baseball was thrown over a fixe... | 10/04/1988 |
| 4563005 | Apparatus for evaluating baseball pitching performance Apparatus for detecting and computing the location of a baseball as it is pitched over a plate is disclosed. Infrared receivers are disposed at corner locations on opposite sides of a target zone which is aligned with the plate. First and second arrays of... | 01/07/1986 |
| 4560167 | Device for training to play golf The present invention relates to a device for training to play golf. Above a black disc is coaxially held a detector comprising a phototransistor which monitors a surface of diameter equal to that of a golf hole less the diameter of a golf ball and which ... | 12/24/1985 |
| 4375887 | Method of matching golfer with golf ball, golf club, or style of play A method of matching a golfer with golf balls with varying aerodynamic properties is disclosed. The "launch conditions" with which the golfer "launches" a golf ball are measured to determine the golf ball dimple pattern most suitble for a particular golfe... | 03/08/1983 |
| 4180726 | System for measuring characteristics of an object's motion One embodiment of the subject invention comprises a device in which the passage of an object through first and second closely spaced parallel, pulsed, infrared beams is detected, to provide an elapsed time and/or speed indication. The beams are synchronou... | 12/25/1979 |
| 4131280 | Electronic tee off device An electronic tee off device has a plurality of light-emitting diodes of different colors situated at a location where when energized, they are visible to a golfer when the golfer is properly positioned with respect to a golf ball which the golfer is abou... | 12/26/1978 |
| 4059270 | Method for custom fitting golf clubs A device utilizing a system of photobeam measurers to detect the speed imparted to a golf ball by a golfer that is utilized with a golf club of adjustable weight and design for determining the optimum club design for a particular individual golfer being t... | 11/22/1977 |
