Abstract: A pickleball paddle with a centralized core, comprises a plate body and a grip body, the plate body has a core, a frame and two surface layers, the frame is disposed on a periphery of the core, the plate body defines a first ball-striking response part and a second ball-striking response part in corresponding to the core, the first ball-striking response part is located at a central part of the core, the first ball-striking response part and the second ball-striking response part respectively have a first response parameter and a second response parameter different from each other, the two surface layers are spaced apart from each other and respectively assembled on the core and the frame, the two surface layers correspond to the first ball-striking response part and the second ball-striking response part.

Abstract: A composite panel structure has opposing outer walls or surfaces and a core comprising a plurality of ribs extending between and connected to the outer walls and defining chambers which are filled with expanding foams, non-expanding foams, gases, or a combination thereof. The outer panel surfaces and internal chamber walls or ribs are made of woven or non-woven fibrous material impregnated with one or more resins. The panel structure may be used for making a variety of products including sports equipment such as sports paddles, surfboards, kite boards, skateboards, wakeboards, as well as construction panels for walls, ceilings or floors, display panels, panels for the vehicle industry, furniture, and other structures requiring high strength to weight properties.

Abstract: A composite panel structure has opposing outer walls or surfaces and a core comprising a plurality of ribs extending between and connected to the outer walls and defining chambers which are filled with expanding foams, non-expanding foams, gases, or a combination thereof. The outer panel surfaces and internal chamber walls or ribs are made of woven or non-woven fibrous material impregnated with one or more resins. The panel structure may be used for making a variety of products including sports equipment such as sports paddles, surfboards, kite boards, skateboards, wakeboards, as well as construction panels for walls, ceilings or floors, display panels, panels for the vehicle industry, furniture, and other structures requiring high strength to weight properties.