Abstract: A bat has an elongate tubular striking member of a first material, and an elongate handle member of a second material. The handle may be of composite material laid up in selected layers and orientation to produce selected weight distribution, strength, and stiffness and improved batting capabilities. The striking member and handle member may have juncture sections which are substantially rigidly interconnected through mating configurations.

Abstract: A ball bat includes a substantially tubular frame having a handle portion and a primary hitting portion. The handle portion is formed of a non-steel material. The hitting portion is formed separately from, and coupled to, the handle portion. The hitting portion is formed of a steel and has an inner surface and an outer surface. At least a portion of hitting portion is carburized forming a carburized layer.

Abstract: A bat, configured for impacting a ball, includes a substantially tubular frame and a substantially tubular body. The frame extends along a longitudinal axis and has a handle portion and a primary hitting portion. The body is coaxially aligned with the hitting portion of the frame. The body includes a proximal end, a distal end, and first and second tubular wall transition regions. The wall thickness of the first tubular wall transition region generally increases along the longitudinal axis from a first position, generally near the proximal end, toward the distal end. The wall thickness of the second tubular wall transition region generally increases along the longitudinal axis from a second position, generally near the distal end, toward the proximal end. The body is configured to move independently with respect to the hitting portion of the frame upon impact with the ball.

Abstract: A bat has an elongate tubular striking member of a first material, and an elongate handle member of a second material. The handle may be of composite material laid up in selected layers and orientation to produce selected weight distribution, strength, and stiffness and improved batting capabilities. The striking member and handle member may have juncture sections which are substantially rigidly interconnected through mating configurations.