Abstract: The multiple dimpled golf ball has 78% or more of its surface covered with dimples. For a golf ball with a total of 324 (332) dimples, 124 (132) dimples have a diameter of 0.157 inches and 200 dimples have a diameter of 0.17 inches. For a golf ball with a total of 384 (392) dimples, there are two configurations: (a) 144 (152) dimples have a diameter of 0.14 inches and 240 dimples have a diameter of 0.16 inches; or (b) 66 (72) dimples have a diameter of 0.13 inches and 318 (320) dimples have a diameter of 0.16 inches. For a golf ball with a total of 414 (422) dimples, 144 (152) dimples have a diameter of 0.14 inches and 270 dimples have a diameter of 0.15 inches. For a golf ball with a total of 484 (492) dimples, there are two configurations: (a) 174 (182) dimples have a diameter of 0.13 inches and 310 dimples have a diameter of 0.14 inches; or (b) 170 (178) dimples have a diameter of 0.13 inches, 260 dimples have a diameter of 0.14 inches, and 50 dimples have a diameter of 0.15 inches.

Abstract: A piezoelectric motion detector is disclosed. The device is particularly suitable for use in analyzing a golf ball when hit from a golf tee. A piezoelectric film is affixed to the bottom of a tee having a base. A signal generated by the piezoelectric film is amplified and is used, for example, to open a camera shutter and initiate a sequence of light flashes.

Abstract: The multiple dimpled golf ball has 78% or more of its surface covered with dimples. For a golf ball with a total of 414 dimples, 144 dimples have a diameter of 0.14 inches and 270 dimples have a diameter of 0.15 inches. If no dimples are removed from the poles, then the golf ball has 422 dimples.

Abstract: The multiple dimpled golf ball has 78% or more of its surface covered with dimples. For a golf ball with a total of 324 (332) dimples, 124 (132) dimples have a diameter of 0.157 inches and 200 dimples have a diameter of 0.17 inches. For a golf ball with a total of 384 (392) dimples, there are two configurations: (a) 144 (152) dimples have a diameter of 0.14 inches and 240 dimples have a diameter of 0.16 inches; or (b) 66 (72) dimples have a diameter of 0.13 inches and 318 (320) dimples have a diameter of 0.16 inches. For a golf ball with a total of 414 (422) dimples, 144 (152) dimples have a diameter of 0.14 inches and 270 dimples have a diameter of 0.15 inches. For a golf ball with a total of 484 (492) dimples, there are two configurations: (a) 174 (182) dimples have a diameter of 0.13 inches and 310 dimples have a diameter of 0.14 inches; or (b) 170 (178) dimples have a diameter of 0.13 inches, 260 dimples have a diameter of 0.14 inches, and 50 dimples have a diameter of 0.15 inches.

Abstract: A golf ball with improved distance is disclosed. The golf ball has a relatively low spin velocity coupled with a particular dimple number, diameter, depth and arrangement. The ball is characterized by a lower flight trajectory and longer total distance. In a preferred embodiment (Example 10, shown in FIG. 2), the dimples marked 18 have a diameter of 0.140 inches.+-.0.002 inches, while the balance of the dimples have a diameter of 0.160 inches.+-.0.002 inches.

Abstract: A golf ball with improved distance is disclosed. The golf ball has a relatively low spin velocity coupled with a particular dimple number, diameter, depth and arrangement. The ball is characterized by a lower flight trajectory and longer total distance. The golf ball has 384 dimples .+-.3% and the dimples preferably have an average diameter of 0.145-0.155 inches and an average depth of 0.0103-0.0123 inches. The golf ball core can be either thread wound or solid. The cover can be transpolyisoprene or an ionomer.The materials of the core and cover are selected so that the golf ball has a spin velocity below 2900 rpm when hit at 230 feet per second by an implement having a face angle of 13.degree. with respect to the vertical. The dimples are substantially evenly spaced over the surface of the golf ball, and the dimple depth, diameter and number are interrelated according to the following formula:[554.3(d-x)-37(D-y].sup.2 +[138.6(D-y)+926(d-x)].sup.2=Swherein:d=average dimple depthD=average dimple diameterx=0.

Abstract: The multiple dimpled golf ball has 78% or more of its surface covered with dimples. For a golf ball with a total of 324 dimples, 124 dimples have a diameter of 0.157 inches and 200 dimples have a diameter of 0.17 inches. For a golf ball with a total of 384 dimples, there are two configurations: (a) 144 dimples have a diameter of 0.14 inches and 240 dimples have a diameter of 0.16 inches; or (b) 66 dimples have a diameter of 0.13 inches and 318 dimples have a diameter of 0.16 inches. For a golf ball with a total of 414 dimples, 144 dimples have a diameter of 0.14 inches and 270 dimples have a diameter of 0.15 inches. For a golf ball with a total of 484 dimples, there are two configurations: (a) 174 dimples have a diameter of 0.13 inches and 310 dimples have a diameter of 0.14 inches; pr (b) 170 dimples have a diameter of 0.13 inches, 260 dimples have a diameter of 0.14 inches, and 50 dimples have a diameter of 0.15 inches.

Abstract: A golf ball having dimples covering its surface and having six great circular paths on the surface of the golf ball where none of the paths intersect a dimple is disclosed. The six great circular paths are obtained by inscribing a cubical pattern in the surface of the golf ball, dividing each square face of the cube into four isosceles triangles by bisecting the square face twice and filling each triangle so produced with dimples. A total of twenty-four triangles are obtained on the surface of the golf ball. Golf balls having six great circles and having 360, 384, 408, and 432 dimples are disclosed.

Abstract: A golf ball having dimples covering its surface, and having three great circular paths on the surface of the golf ball where none of the paths intersect a dimple is disclosed. The three great circular paths are obtained by laying out a truncated octahedron on the surface of the golf ball and dividing the six square faces into four equal isosceles triangles. The great circular paths are coextensive with the bisecting lines. Golf balls having 368 and 632 dimples and having three great circles are disclosed.

Abstract: A golf ball having dimples covering its surface and having seven great circular paths on the surface of the golf ball where none of the paths intersect a dimple is disclosed. The seven great circular paths are obtained by laying out a cuboctahedron on the surface of the golf ball, dividing each of the six square faces of the cuboctahedron into four isosceles triangles by bisecting each square twice. The dimples are arranged by filling each triangle with dimples. A cuboctahedron is a fourteen-sided figure with eight triangular faces and six square faces. Bisecting the square faces twice provides a total of 32 triangles per cuboctahedron. Golf balls having seven great circular paths and 360, 384 and 408 dimples are disclosed.

Abstract: A method of configuring a stepped, cylindrical golf club shaft to achieve an optimum shaft impact angle is diclosed. A predetermined portion in the middle of the shaft is selected as are the number of steps to be used, the wall thickness of each step and the outer diameter. For each configuration which has the selected number of steps the deflection at a predetermined point is calculated when a load is applied at another point. For those deflections which fall within a desired predetermined range of deflections, the slope of the bending angle of the shaft is calculated at the point of deflection. A configuration is then selected which has a desired slope and a golf club shaft is made with the middle portion configured to provide the desired bending angle. Specific configurations for maximum bending angle are provided for both wood-type and iron-type golf clubs.

Abstract: A trajectory calculator receiving data indicating initial values of golf ball flight angle, velocity and spin, calculates the apparent elevation and deflection angles at which the golf ball would be seen by an observer at the launch point. An optical object projector projects an image representing the golf ball on a screen. The size of the image decreases with time to yield the apparent perspective size decrease with range. An optional exerciser console enables input of changeable environmental quantities.

Abstract: A video data acquisition system takes at least two snapshot views of selected points on a golf ball in the immediate post-launch time period. Analog video data are converted to digital data for analysis in an external system.A trigger generator, of a type well known in the art, senses the existence of a certain set of conditions associated with the launch of the golf ball and thereupon generates a set of precisely timed impulses which trigger the following sequence of events:(a) prepare TV camera to receive data(b) trigger first flash(c) trigger second flash(d) read out data from TV camera.