Abstract: A finished, painted golf ball is disclosed. Dimples on the golf ball are interrelated by dimple number, dimple diameter and dimple depth and are arranged on the surface of the golf ball in a manner which enables the golf ball to travel further. At least about 80% of the distances between the closest points of the edges of adjacent dimples are less than about 0.065 inches and at least about 55% of the distances between the closest points of the edges of adjacent dimples are greater than about 0.001 inches.Dimple number, dimple diameter and dimple depth are also interrelated in a specific manner according to the formula: ##EQU1## wherein: d=average depth of all dimples in inchesD=average diameter of all dimples in inchesS=computed unknown (1.0 or less for present invention)x, y, a and b are dependent on the number of dimples.

Abstract: Dimples on a golf ball are interrelated by dimple number, dimple diameter and dimple depth and are arranged on the surface of the golf ball in a manner which enables the golf ball to travel further. At least about 80% of the distances between the closest points of the edges of adjacent dimples are less than about 0.065 inches and at least about 55% of the distances between the closest points of the edges of adjacent dimples are greater than about 0.001 inches.Dimple number, dimple diameter and dimple depth are also interrelated in a specific manner according to the formula: ##EQU1## wherein: d=average depth of all dimples in inchesD=average diameter of all dimples in inchesS=computed unknown (1.0 or less for present invention)x, y, a and b are dependent on the number of dimples.

Abstract: Dimples are arranged on the surface of a golf ball in a manner which makes the golf ball travel further. At least about 80% of the distances between the closest points of the edges of adjacent dimples are less than about 0.065 inches and at least about 55% of the distances between the closest points of the edges of adjacent dimples are greater than about 0.001 inches.

Abstract: A method of matching a golfer with golf balls with varying aerodynamic properties is disclosed. The "launch conditions" with which the golfer "launches" a golf ball are measured to determine the golf ball dimple pattern most suitble for a particular golfer or to determine modifications which should be made in his style of play or club design.

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.

Abstract: A measurement system obtains and stores digital data on the positions of golf club and significant human body parts during a golf club swing. An interactive display allows later display of the measured performance for use in instruction or review. A coordinate transformer allows the viewing of a displayed simulated golfer from any aspect and at variable speeds and stop action. A generator such as an alphanumeric or graphic generator displays suggested display options, graphics, informative labels, and alphanumeric tabular data. Permanent copies of any displayed picture can be made for later home study.

Abstract: Electro-optical sensors measure the location of a plurality of spots on the surface of a golf club head or a golf ball at a minimum of two precisely spaced points in time. The two time points for the club head are just prior to impact with the golf ball. The two time points for the golf ball are just after impact by the club head. From the apparent displacements of the plurality of spots between measurements, the apparatus determines in substantially real time the velocity of the club head or ball and the spin about orthogonal axes.

Abstract: A golf club head having a high radius of gyration while maintaining desirable conventional design features is disclosed. The golf club head comprises a steel head and preferably tungsten embedded inserts being added in the heel and toe areas thereof.

Abstract: A golf club head having a high radius of gyration while maintaining desirable conventional design features is disclosed. The golf club head comprises a steel head and preferably tungsten embedded inserts being added in the heel and toe areas thereof. The entire back of the club head is located on one side of an area defined by a plane which is parallel to the axis of the golf club shaft and tangential to the top of the back of the club head.

Abstract: A golf club head having a high radius of gyration while maintaining desirable conventional design features is disclosed. The golf club head comprises a steel head and preferably tungsten embedded inserts being added in the heel and toe areas thereof. The entire back of the club head is located on one side of an area defined by a plane which is parallel to the axis of the golf shaft and tangential to the top of the back of the club head.

Abstract: A golf club head having a high radius of gyration while maintaining desirable conventional design features is disclosed. The golf club head comprises a steel head and preferably tungsten embedded inserts being added in the heel and toe areas thereof.

Abstract: A golf club head having a high radius of gyration while maintaining desirable conventional design features is disclosed. The golf club head comprises a steel head and preferably tungsten embedded inserts being added in the heel and toe areas thereof.