Abstract: A grip for use on the extending end of the shaft of a golf club is provided with an especially configured array of longitudinally extending grooves which are in direct opposition to the rotation of the golf club about the longitudinal axis of the golf club shaft to resist twisting of the golf club in the golfer's hand resulting from mis-hitting of a golf ball in an off center location toward the toe or heel of the golf club head. The grip may have a visual indicator by which the rotational position of the golf club when being held in a golfer's hands can be determined by visual alignement of the grip with the golfer's hands.

Abstract: A golf club head cover is made in accordance with a method having a minimal number of steps from a single sheet of fabric-like material which provides both an outer covering and a liner and inherently forms the head cover which closely fits the head of a wood type golf club and has an especially configured constricted bore in the head cover. The head cover is also provided with a detachably mounted golf identification tag which simplifies manufacturing and supply inventories.

Abstract: A golf ball is formed by a special method and molds so that its cover, which is formed from a pair of hemispherical cover blanks that are moldingly fused into a unitary golf ball cover, has the fused junction of the cover blanks and the molding flash produced by the molding operation extending around the golf ball in a wave form configuration. The golf ball dimple pattern includes a circular array of dimples located in the area of the molding flash which is alternately disposed on opposite sides of the circular dimple array and this allows various uninterrupted dimple patterns to be provided on the golf ball for improved dimple symmetry and flight stability. Preferred dimple patterns are provided on the golf ball so as to subdivide the surface of the cover into an uninterrupted geodesic spherical configuration defining a plurality of equilateral spherical polygons each of which contains an identical number and array of dimples.

Abstract: A correlated set of golf clubs the heads of which each contain (1) a sole including a trailing edge which is indented toward the striking face a distance of at least 1/16 of an inch, and (2) a lower back surface adjacent the indented trailing edge sloping upwardly and inwardly from the indented trailing edge toward the striking face. This configuration allows the club head material which would otherwise be located in the indented areas to be redistributed in the heel and toe portions of the club heads. The redistributed head materials increases the mass concentrations in the heel and toe areas which improves the resistance to twisting of the club heads upon off-center impacts with a golf ball.

Abstract: In a set of correlated golf clubs, the heads are provided with a narrowed neck (36) connecting the main body (32) of the club head to the hosel (34). A midsection (46) of the neck has a cross section of maximum dimension less than the diameter of the hosel so that, when the main body of the club head twists under impact with a ball, the narrowed neck will function as a torsion bar with most of the torsion occurring in the midsection (46). In that manner, the twisting motion of the main body is uncoupled from the hosel and shaft.

Abstract: An apparatus for practicing golf putting strokes including a putting surface member for receiving a golf ball to be putted and a swing path defining member which extends angularly from the putting surface part and lies in a plane which defines a normal and desired putter swing path. The swing path defining part is laterally offset from the intended swing path of the putter to provide a person using the apparatus with a visual indication of a normal swing path to serve as a guide while making unfettered practice swings with the putter. The swing path defining member includes an unobstructed planar member and a flange which is mounted on the putting surface member and supports the unobstructed planar member at an angle of substantially 72.degree. with respect to the putting surface member.

Abstract: A golf-club and golf-ball testing apparatus, having a crank arm driven by a main drive shaft, drives a club swinging arm through a secondary drive shaft supported by bearings on the end of the crank arm and turned by a planetary gear which meshes with teeth in a fixed gear concentric with the main drive shaft. The club swinging arm is connected to the secondary drive shaft by a short block, and the club is connected to the end of the swinging arm by a gripping member that is caused to rotate from an adjustable initial position so that the shaft is rolled through about 180.degree. during a full swing. The short block is coupled to the secondary drive shaft by resilient material to absorb shocks between the swinging arm and the crank arm.