Amusement devices: games – Surface projectile game; game element – Simulated game
Patent
1987-08-31
1989-11-14
Garrett, Robert E.
Amusement devices: games
Surface projectile game; game element
Simulated game
273181J, 273184R, 273185R, 73 13, A63B 6936
Patent
active
048802395
DESCRIPTION:
BRIEF SUMMARY
The invention relates to an apparatus for training in sports, particularly golf. For training in this sport, in which a ball has to be struck by a club manipulated by the player, various types of simulators are known which, without the ball having to travel its full trajectory, indicate the characteristics of what the trajectory would have been in accordance with the parameters recorded in the striking area (essentially distance and angle of dispersion), these simulators in the present state of the art often being electric or electronic devices.
The invention relates to a new type of training equipment serving the abovedescribed purpose, which comprises a net (or cloth) which is suspended and stretched in such a manner that it absorbs the greater part of the kinetic energy of the ball striking against it and acts to provide appropriate data. This apparatus has an important advantage over known devices in that it comprises only fully reliable, sturdy mechanical equipment insensitive to weather and enabling the simulator to be used outdoors without special precautions.
The apparatus according to the invention comprises a net or cloth suspended vertically at the top and having its two bottom ends fixed to two calibrated weights whose displacement in an inclined plane varies in dependence on the force of the impact of a golf ball on said net.
FIG. 1 is a general view of the apparatus.
FIG. 2 shows a device for the displacement of the weights on inclined planes.
FIGS. 3 and 7 show two systems for evaluation of the results.
FIGS. 4, 5 and 6 show the graphic determination of the components on impact of the balls on the net of the apparatus.
FIG. 8 is a general view including protective nets.
FIG. 1 shows a cloth 1 stretched vertically. This cloth is composed of a wear resistant woven fabric or net, or of a plastics or similar material, on which golf scenery or any other marking permitting aiming may be depicted. The cloth is fastened at the top to a cross member 2, which in turn is fixed on the two uprights 3 of the simulator frame, which ensures the stability of the whole arrangement. The right-angled bends at the top of the uprights 3 hold the cloth 1 away from said uprights. The bottom corners of the cloth are fixed on two identical calibrated weights 4 which are free to move on the inclined plane formed by two ropes 5 stretched between fixed points on the frame and forming an angle of 45.degree., which is the ideal ballistic angle for obtaining the optimum trajectory.
The kinetic energy to be absorbed is considerable if it is considered that a golf ball, which weighs about 46 grams, may arrive at a speed of 220 kilometers per hour, and the beginning of the description given above makes it possible to explain one of the characteristics of the invention. When the golf ball arrives on the net 1, the latter is deformed and raised, the bottom corners of the net moving along the inclined plane formed by the ropes 5 through the action of the weights 4 to which they are fixed and which they displace. It is then sufficient to measure the displacement of the weights to obtain information permitting determination of the trajectory which the ball would have followed if it had not struck the net.
FIG. 2 shows a device enabling the calibrated weights 4 to move on the ropes 5 without slipping or braking detrimental to good operation. The rope 5 is stretched between a point on the upright 3 and a point on the base 6. On the latter a two-pronged fork 7 holds the end of the rope captive by means of the knot 8. At the other end a ring 9 provided with a stop screw enables the rope to be tensioned, the ring bearing against the two-pronged fork 10 fixed on the upright 3. A pulley 11 identical to those used in boat rigging runs on the rope. The swivel 12 of the pulley is fixed on the weight 4. The latter is provided with a hook 15 enabling it to be fastened to the corner of the net 1.
In order to ensure that the distance between the weights will not be dependent on the elasticity of the net, the weights may be connected by a rope o
REFERENCES:
patent: 1309105 (1919-07-01), Sanford
patent: 1443412 (1923-01-01), Hutton
patent: 2234814 (1941-03-01), Weaver
patent: 3411788 (1968-11-01), Blanding
patent: 4511146 (1985-04-01), Windall
Baxley Charles E.
Garrett Robert E.
Williamson Mark A.
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