Patent ID: 8029390

Claim:
A method of making a reinforced lacrosse head comprising: determining a configuration for the lacrosse head having a plurality of lacrosse frame elements including a pair of opposing sidewalls, each sidewall having an open frame to reduce weight of the lacrosse head, a scoop, and a throat adapted to engage a lacrosse handle; selecting a reinforcement location in at least one lacrosse frame element to reinforce with a reinforcement member; making a lacrosse frame element including a first engagement surface and allowing the frame element to cure; making a secondary part including a second engagement surface, and an exterior edge and allowing the secondary part to cure; placing a reinforcement member between the lacrosse frame element and the secondary part in the reinforcement location; compressing the secondary part and the lacrosse frame element between a sonotrode and an anvil; and applying ultrasonic oscillations to at least one of the lacrosse frame element and the secondary part so that the first engagement surface and the second engagement surface join one another, at least one of the first engagement surface and the second engagement surface straddling the reinforcement member after having been sonically joined with one another so that the reinforcement member is fixedly restrained between the secondary part and the lacrosse frame element to provide structural rigidity to the lacrosse frame element, wherein the reinforcement member is at least one of joined directly to at least one of the secondary part and the lacrosse frame element and free floating relative to the at least one of the secondary part and the lacrosse frame element, wherein the reinforcement member is disposed a pre-selected distance from the exterior edge of the secondary part to substantially resist at least one of cracking, chipping or breaking of the exterior edge when that edge is impacted by an object.