Amusement devices: games – Surface projectile game; game element – Simulated game
Patent
1977-12-27
1980-01-01
Marlo, George J.
Amusement devices: games
Surface projectile game; game element
Simulated game
273191B, 273DIG21, A63B 6936
Patent
active
041813103
ABSTRACT:
Apparatus for analyzing the movement of a device to be manipulated by a user thereof. In an embodiment, a unit that monitors movements in a device to be manipulated includes a flexible member which is attached to the device at a device associated position and which is extended and retracted with changes in distance, as measured along the member, between the associated position and another position through which the member passes; a motor-driven reel which provides additional lengths and takes up excess lengths of the member corresponding to the changes in distance; and a synchro which provides an electrical signal in response to the rotation of the shaft of the motor and of the reel. The output of the synchro is fed to an electronic data processor programmed for calculations dependent on the input from this unit and another such unit, and a recorder is provided to print a graphical display of the results of these calculations. In the embodiment, which is adapted to analyze a golf swing, the ends of the flexible members in the two units are attached to a golf club at an associated position which moves with the head of the club, and the members are slidably held to other positions so that portions of the members form a triangle. The configuration of the apparatus, including an adjustable initial configuration, leads to convenient equations for calculating significant positional variables in a golf swing, including the distance of the associated position from a reference plane defined by the vertices of the triangle in the initial configuration. The configuration and equations resulting therefrom are generally applicable to means for determining the distance of a position which moves with a device to be manipulated from a reference plane.
REFERENCES:
patent: 434771 (1890-08-01), Dowd
patent: 1137349 (1915-04-01), Patterson
patent: 3806131 (1974-04-01), Evans
patent: 3876212 (1975-04-01), Oppenheimer
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