Abstract: A golf course maintenance system and method which comprises the input of a golf course and its shape, size and parameters into a computer-like system. The course is segmented into teeing grounds, fairways, one or more rough areas, water hazards, bunkers, and putting greens. Each such component of the holes and course is calculated into square foot or square yards surface area. Each such component is then calculated for maintenance purposes based upon cost components for maintenances, namely, cost and quantity of labor and Consumables such as fuel, energy, water, chemicals, fertilizers. The Course Officials can input into a CPU connected to a display screen the approximate configuration, length, width, and location of teeing grounds, fairways, rough, water hazards, bunkers, and putting greens. Each of these Course Components is then associated with a set of Processes to maintain them and each Process is associated with cost factors, e.g., labor, consumables resources such as fuel and water, etc.

Abstract: A golf course maintenance system and method which comprises the input of a golf course and its shape, size and parameters into a computer-like system. The course is segmented into teeing grounds, fairways, one or more rough areas, water hazards, bunkers, and putting greens. Each such component of the holes and course is calculated into square foot or square yards surface area. Each such component is then calculated for maintenance purposes based upon cost components for maintenances, namely, cost and quantity of labor and Consumables such as fuel, energy, water, chemicals, fertilizers. The Course Officials can input into a CPU connected to a display screen the approximate configuration, length, width, and location of teeing grounds, fairways, rough, water hazards, bunkers, and putting greens. Each of these Course Components is then associated with a set of Processes to maintain them and each Process is associated with cost factors, e.g., labor, consumables resources such as fuel and water, etc.

Abstract: A golf ball having improved yardage performance for slow swing speed players without the same benefit of improved yardage for fast swing speed players. The golf ball preferably has a mass not exceeding 1.62 ounces and, more preferably is in the range of about 1.198 ounces to about 1.620 ounces; a diameter of preferably no more than about 1.680 inches and more preferably in the range of about 1.519 inches to 1.680 inches; and a density not to exceed about 0.653 ounces per cubic inches. The golf ball can have a diameter within the range of about 1.570 to 1.685 inches, a total ball weight in the range of about 1.30 ounces to 1.61 ounces and a density, for all balls, of about 0.642 ounces per cubic inch.

Abstract: A green speed measuring apparatus is in the form of a longitudinal bar having inwardly inclined, longitudinally parallel surfaces on each side, to define a trough or ramp for rolling of a golf ball thereon. A standard distance of one notch on a first side is provided. In addition, on the second or obverse side, one or two additional notches are provided in the ramp thereon at different distances from the ends of the bar. Each notch is associated with a scaling factor to obtain the speed of a level green. The longest notch from one end of the bar may be marked with a scaling factor of 1.00 as the notch is located at 29.4 inches from the end; the middle notch, if located at ½ the distance of the longest notch is marked with a scaling factor of 1.83; and the shortest notch, if located at a distance of ¼ the distance of the longest notch from an end of the bar is marked with a scaling factor of 3.34.

Abstract: The measuring apparatus is in form of a bar having inclined parallel surfaces on each longitudinal side to define a ramp for rolling of a golf ball thereon with three notches in the ramps at different distances from the ends of the bar. Each notch is associated with a scaling factor to obtain the speed of a level green. The longest notch from one end of the bar is marked with a scaling factor of 1.00, the middle notch is marked with a scaling factor of 1.83, and the shortest notch from an end of the bar is marked with a scaling factor of 3.34.

Abstract: The ball sizing device has an angularly disposed support which defines a square-shaped space for receiving a dimpled golf ball. The two lowermost walls defining the space receive the ball in point-to-point contact. Each of the two opposite walls has a gauge mounted thereon with a spring loaded pin for engaging the ball in point-to-point contact. Each gauge serves to measure a deviation of the diameter of a ball from a standard diameter. The readings from the gauges are processed in a central processing unit in order to obtain a statistical average of the diameter of the ball. A standardizing cylinder is separately mounted on the sizing device in order to calibrate the two gauges to a zero reading and to provide a standard diameter value to the central processing unit.

Abstract: A method is provided for determining at least one of the coefficient of lift and the coefficient of drag of a golf ball for a given range of velocities and a given range of spin rates from launch. A method is also described for simulating the flight of a golf ball in a computer. A ball is launched at a selected velocity, spin rate and launch angle. Calculations are made of the x and y coordinates of the ball during flight and the coefficients of lift and/or drag are calculated mathematically in dependence on the launch velocity, spin rate, angle and calculated x and y coordinates. Repeated launchings are made to obtain a plurality of mathematically calculated values of the coefficient(s). Thereafter, an aerodynamic model for the flight of the ball is mathematically determined in dependence upon the mathematically calculated values of at least one of the coefficients relative to the velocity and spin rate.