Electric apparatus for use when practicing a golf swing
First Claim
1. An apparatus used when practicing a golf swing, comprising:
- a golf club having a shaft and a head;
a first light transmitting means for generating a beam of light substantially parallel to the ground;
first and second light receiving means located at the sides of the first light transmitting means for receiving light,said first light transmitting means and said first and second light receiving means being stationarily arranged on the ground so as to face a head of the golf club at a position corresponding to an impact region in a passage of the head during a swing;
relay means, mounted in the head of the golf club or adjacent thereto, for relaying the light from said first light transmitting means to said first and second light receiving means during a swing;
first processing means, responsive to an elapsed time period corresponding to an intensity of light received by said first light receiving means during a club swing, for obtaining a first distance between the head and the first light receiving means;
second processing means, responsive to an elapsed time period corresponding to an intensity of light received by said second light receiving means during a club swing, for obtaining a second distance between the head and said second light receiving means; and
means for calculating a head trajectory angle of the swing based on the first and second distances, said head trajectory being at least one of an angle of inclination of a club face and an angle of inclination of an axis of said club swing with respect to a golf ball.
1 Assignment
0 Petitions
Accused Products
Abstract
In an apparatus used for practicing a golf swing, a transmitter-receiver is stationarily arranged on the ground, and a relay unit is provided on the golf club in or near to head. The transmitter-receiver has an infrared light emitter and a pair of receivers. The relay unit has a receiver for receiving the light from the emitter of the transmitter-receiver and a infrared ray emitter for emitting a ray toward the pair of receivers of the transmitter-receiver. An LSI is provided for processing the light received by the pair of receivers separately, for detecting a change in intensity at time elapses for calculating the direction of the swing, and the timing of a maximum intensity for obtaining the head speed.
41 Citations
17 Claims
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1. An apparatus used when practicing a golf swing, comprising:
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a golf club having a shaft and a head; a first light transmitting means for generating a beam of light substantially parallel to the ground; first and second light receiving means located at the sides of the first light transmitting means for receiving light, said first light transmitting means and said first and second light receiving means being stationarily arranged on the ground so as to face a head of the golf club at a position corresponding to an impact region in a passage of the head during a swing; relay means, mounted in the head of the golf club or adjacent thereto, for relaying the light from said first light transmitting means to said first and second light receiving means during a swing; first processing means, responsive to an elapsed time period corresponding to an intensity of light received by said first light receiving means during a club swing, for obtaining a first distance between the head and the first light receiving means; second processing means, responsive to an elapsed time period corresponding to an intensity of light received by said second light receiving means during a club swing, for obtaining a second distance between the head and said second light receiving means; and means for calculating a head trajectory angle of the swing based on the first and second distances, said head trajectory being at least one of an angle of inclination of a club face and an angle of inclination of an axis of said club swing with respect to a golf ball. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification