Abstract: Golf club heads are described comprising a striking surface that includes a surface profile having at least one peak, at least one valley, and a transition segment between the peak and the valley, wherein the at least one peak, the at least one valley, and the transition segment together define a mean line, and a substantial portion of the transition segment is near to, or on, the mean line. In other embodiments, a golf club head includes a ball-striking surface comprising an asymmetric surface texture.

Abstract: A wood-type golf club head is described that includes a body including one or more walls defining an interior cavity and multiple weight ports formed in the body. At least one weight is configured to be retained at least partially within at least one of the weight ports. One or more fins or ribs are secured to each of the weight ports and to another structural member of the golf club head.

Abstract: Embodiments of movable weights, such as weight assemblies and weight screws, for a golf club head are disclosed herein. One embodiment for a weight assembly, for example, comprises a mass element having a first end, a second end and a sidewall extending between the first end and the send end. The sidewall of the mass element defines a first bore extending through the mass element and at least a portion of the sidewall of mass element tapers in a direction from the first end to the second end. This embodiment further includes a retaining element configured to engage the first bore adjacent the first end of the mass element and defining a second bore. The weight assembly further includes an elongate fastener having a first end configured to be received within the second bore of the retaining element and a second end extending through the first bore and beyond the second end of the mass element when the mass element, retaining element and fastener are assembled together.

Abstract: A wood-type golf club head is described that includes a body including one or more walls defining an interior cavity and multiple weight ports formed in the body. At least one weight is configured to be retained at least partially within at least one of the weight ports. One or more fins or ribs are secured to each of the weight ports and to another structural member of the golf club head.

Abstract: A wood-type golf club head is described that includes a body including one or more walls defining an interior cavity and multiple weight ports formed in the body. At least one weight is configured to be retained at least partially within at least one of the weight ports. One or more fins or ribs are secured to each of the weight ports and to another structural member of the golf club head.

Abstract: An improved racquet stringing machine having a new table featuring a built-in glide bar groove, an improved string clamp, a new tip riser having integrated, threaded height adjustment, an adjustable throat riser carried by an internal sliding bar having improved position lock, and machine height adjustment by a foot operated mechanism.

Abstract: Racquetball racquet having a frame forming a head and a handle characterized by a side profile comprising two intersecting arcs having different radii of curvature and intersecting at a point of intersection which is in the region of but above the throat of the racquet. These two arcs define two oppositely tapered frame segments. The first frame segment extends from the tip of the racquet, where the frame height is at a maximum, to the point of intersection, where the frame height is at a minimum. The second frame segment extends from the handle, at or below the throat, to the point of intersection. The arc defining the first segment is of much larger radius of curvature than the arc defining the second segment. This affords a maximum frame cross-sectional area at the tip and a smaller frame cross-sectional area in a flex zone which includes the point of intersection.