Golf training and practice apparatus

• US 4,304,406 A
• Filed: 02/22/1980
• Issued: 12/08/1981
• Est. Priority Date: 02/22/1980
• Status: Expired due to Term

• Current Assignee: John I. Cromarty
• Original Assignee: John I. Cromarty
• Inventors: Cromarty, John I.
• Primary Examiner(s): Marlo, George J.
• Application Number:
  US06/123,767
• Time in Patent Office: 655 Days
• Field of Search: 273/186 R, 273/186 RA, 273/186 A, 273/185 D, 273/DIG. 28
• US Class Current: 473/225
• CPC Class Codes: A63B 2069/367 Detection of balance between both feet, i.e. weight distribution
• CPC Class Codes: A63B 2220/805 Optical or opto-electronic sensors
• CPC Class Codes: A63B 69/3614 using electro-magnetic, magnetic or ultrasonic radiation emitted, reflected or interrupted by the golf club
• CPC Class Codes: A63B 69/3623 for driving A63B69/3608, A63B69/3658, A63B69/3661, A63B69/3667 and A63B69/3691 take precedence
• CPC Class Codes: A63B 69/3667 Golf stance aids, e.g. means for positioning a golfer's feet

Abstract

A golf training and practice apparatus has a television display and a plurality of sensors for sensing positions of a head of a golf club during the swing at a ball at a given location. A circuit responsive to the times of positioning of the head with respect to the sensors provides output signals to enable display on the television display of a graphic representation of the direction of the swing. The circuit also enables alphanumeric display of other parameters of the swing, and provides on the television display a fixed image of the angle of the face of the club at a time just before the ball reaches the ball position location. In order to also provide information relating to the golfer'"'"'s stance, the apparatus includes sensors for indicating in alphanumeric characters the relative weight on each of the golfer'"'"'s feet during various portions of the swing.

Claims

1. In a golf training and practice apparatus having a ball position location, a plurality of sensors for producing signals in response to the proximity thereto of the head of a golf club, said sensors being positioned to sense positions of the head of the club at least during a portion of a swing of said club aimed at said ball position loction, an indicator, and a circuit for receiving said signals and controlling said indicator to provide a display of a characteristic of said swing;

the improvement wherein said indicator comprises a television screen, means for producing a fixed graphic image on said screen of a ball position, said circuit further comprising means responsive to said signals for producing a graphic image on said screen of actual path of the club head with respect to said location during at least one portion of said swing.

2. The apparatus of claim 1 further comprising means for producing a fixed graphic image on said screen of the angle of the face of the club at a time just before the club reaches said ball position location.

3. The apparatus of claim 1 in which said fixed graphic image extends from one side of said screen towards said ball position, and further comprising means displaying a column of alphnumeric indicia extending along said one side of said screen as an aid in determining the angle of said swing.

4. The apparatus of claim 1 further comprising a pair of weight pads positioned to be stood upon during said swing, said weight pads having sensors, and further comprising means responsive to said last mentioned sensors for indicating in alphanumeric characters the weights on each said pad at a predetermined number of times during said swing.

5. The apparatus of claim 1 further comprising means for the displaying on said screen in alphanumeric characters:

the club head speed, the back swing speed, the down swing speed, and the club face angle just prior to reaching said ball position location.

6. In a golf training apparatus having a ball position location, a plurality of sensors for producing signals in response to the proximity thereto of the head of a golf club, said sensors being positioned to sense positions of the head of the club at least during a portion of a swing of said club aimed at said ball position location, an indicator, and a circuit for receiving said signals and controlling said indicator to provide a display of a characteristic of said swing, the improvement wherein a plurality of said sensors are positioned to be sequentially passed by said club head during a down swing motion, said circuit comprising means responsive to said last-mentioned sensors for determining the downswing acceleration of said club head, said sensors further comprising a pair of sensors angularly disposed with respect to one of the sensors of said first mentioned group, to be passed by said club head following the passing of said one sensor, said circuit further comprising means responsive to the times of passage of said golf club with respect to said one sensor and said last-mentioned two sensors, and means normalizing said passage of sensors to the velocity of said club head for producing a data signal corresponding to the club face angle.

7. The apparatus of claim 6 wherein said plurality of sensors comprises at least three sensors arranged in a line intersecting said ball position location.

8. The apparatus of claim 7 further comprising a second plurality of sensors arranged in a line positioned to be crossed by said club head at a time just before reaching ball position location, for providing signals indicative of ball position of the club head.

9. The apparatus of claim 8 further comprising a third plurality of sensors arranged in a row for providing signals responsive to the addressing of a ball at said ball position location.