WO1992006750A1

WO1992006750A1 - Sight guide for controlling golfer's stance and swing

Info

Publication number: WO1992006750A1
Application number: PCT/IT1991/000083
Authority: WO
Inventors: Giovanni Di Ciommo Laurora
Original assignee: Giovanni Di Ciommo Laurora
Priority date: 1990-10-10
Filing date: 1991-10-08
Publication date: 1992-04-30
Also published as: IT9048352A0; IT9048352A1; IT1244827B; AU8715191A

Abstract

A sight guide to be used in playing golf in order to control either the correct golfer's position and the alignment of the golf club with the trajectory or path followed by the ball to follow fairway or to reach the desired target, green or hole, or any horizontal shift of the golfer's head during the swing, said sight guide consisting of a plurality of lines marked on eyeglass lenses (10A, 10B) and comprising two parallel lines (12A, 12B, 13A, 13B) forming a rail on both lenses (10A, 10B) and three lines (14, 15, 16) perpendicular to the former and marked on only one lens (10A).

Description

Sight guide for controlling golfer's stance and swing

The present invention relates to a sight guide to be used in playing golf in order to control either the correct golfer's position and the alignment of the golf club with the trajectory or path followed by the ball to follow fairway or to reach the desired target, green or hole, or any horizontal shift of the golfer's head during the swing, said sight guide consisting of a plurality of lines marked on eyeglass lenses and comprising two parallel lines forming a rail on both lenses and three lines perpendicular to the former and marked on only one lens.

As known to golfers, in order to cause the ball struck by the club head to exactly follow fairway or to go towards the predetermined target, either green in case of a drive or hole in the putting, some conditions are necessary, i.e. the attitude (correct position) of the golfer's body and head as well as the trajectory of the golf club, the path of the ball being the continuation of such trajectory.

Applicant has already filed two Patent Applications in Italy (Nos. 48538A/89 and 48041A/90) and a PCT Application related thereto (PCT/IT90/00074) concerning sight guide allowing the stroke to be controlled in a "static" way relating to the steadiness of the golfer's head during the execution of a stroke.

The present invention relates to an improvement and a development of the object of the above mentioned Patent Applications and provides a sight guide allowing both a static and a dynamic control to be accomplished. In other words the object of the invention, as already mentioned, is to control both that golfer's body keep its general attitude, i.e. golfer's head remains steady and body cross-plane is parallel to the plane of the trajectory followed by the ball to reach the desired point, and that the trajectory followed by the golf club head during the swing, i.e. moving away from and to the ball, lies in the above mentioned plane of the trajectory followed by the ball. As can be easily seen, since said plane containing the trajectory followed by the golf club will also contain consequently the trajectory of the ball because such plane is made coincident with the vertical plane passing through the ball and the target, the ball itself will follow the correct trajectory which will not be insiede nor outside the above mentioned plane.

This invention will now be described in more detail with reference to the accompanying drawing, in which :

Fig. 1 is a perspective view of an eyeglass including the sight guide in accordance with the invention;

Fig. 2 shows schematically in enlarged scale the lenses of the eyeglass of Fig. 1 from the outside;

Fig. 3 shows the lenses of Fig. 2 from the outside; and

Fig. 4 shows schematically the practical use of the sight guide in accordance with the invention illustrating the position of the golfer's feet, the position of the ball and three different trajectories of the golf club, i.e. a correct, central trajectory and outer and inner trajectories, respectively.

With reference now to Figs. 1 to 3 two parallel lines which are formed as straight segments 12A and 13A on lens 10A and segments 12B and 13B on lens 10B, respectively, are marked on said lens 10A, 10B of eyeglass 11, said segments being aligned with each other as shown.

Marked on lens 10A is a further straight segment 14 disposed between segments 12A and 13A and perpendicular thereto, and two parallel, spaced away segments 15 and 16 are perpendicular to segment 13A and disposed outside said segment with respect to segment 14.

The above described arrangement of lines according to the invention is schematically shown in Fig. 4 illustrating the practical use of said lines, the two pairs of corresponding segments 12A, 12B and 13A, 13B separated on the two lens 10A and 10B respectively, being shown as two continuous lines 12 and 13.

Thus, assume that a golfer sees through the eyeglass the arrangement of Fig. 4. In order to correctly execute the stroke the tips of the left and right feet PS and PD, respectively, should be tangent to lower line 12, and ball PL should be located at the outer angle formed by segment 14 with lower line 12, thus causing such line to be the continuation of the line connecting ball PL to the "target". As already mentioned the "target" of the ball can be the median line of the fairway, the green or the hole according to whether it is a matter of a drive or a putting.

Once such situation is established and controlling that the head does not move horizontally with respect to the initial position, the stroke is then executed by swinging away the head TS of the golf club from ball PL during the upward movement along trajectory TR shown with solid line, and then by approaching again the ball during the downward movement of the golf club along the same trajectory TR.

It should be noted that trajectory TR is exactly parallel to both lines 12 and 13. Therefore ball PL will follow the direction of arrow FR in turn parallel to lines 12 and 13 and then the imaginary line to the "target". As a result, ball PL will reach the desired target without any right or left deviations.

In Fig. 4 there is also shown the control of the correctness of the initial movement of the golf club by means of the sight guide of the invention. As it is known to the golf professionals this movement is of fundamental importance, especially as far as the first thirty centimeters is concerned. In Fig. 4 there are also shown two dashed lines representing the two wrong trajectories of head TS of the golf club, i.e. inner trajectory TI and outer trajectory TE, which cause the corresponding wrong trajectories of ball PL indicated by arrows FI and FE, respectively.

Parallel lines 15 and 16, as already described, aid the golfer in keeping his head steady, i.e. without any movement with respect to the initial position before the swing.

It should be appreciated that the sight guide of the invention is a very effective means to aid any golfer, beginner, amateur or professional in correctly setting up both his position and the movement of his head and the golf club. This sight guide allows the golfer to self-correct his position in real time, thus avoiding or reducing to a minimum the heretofore usual practice, i.e. shooting the stroke by a telecamera and correcting any wrong position or movement after the shot being projected.

Claims

1. A sight guide to be used in playing golf in order to control either the correct golfer's position and the alignment of the golf club with the trajectory or path followed by the ball to follow fairway or to reach the desired target, green or hole, or any horizontal shift of the golfer's head during the swing, said sight guide consisting of a plurality of lines marked on eyeglass lenses and comprising two parallel lines forming a rail on both lenses and three lines perpendicular to the former and marked on only one lens.

2. The sight guide to be used in playing golf of claim 1, wherein one of said perpendicular lines lies in the area between said two parallel lines connected by said one perpendicular line.

3. The sight guide to be used in playing golf of claim 2 , wherein the other two perpendicular lines lie on the outside of the upper line of said two parallel lines.