An apparatus and a method that provides a helmet cap with an embedded visor on the inside of said helmet cap to train a wearer of a football helmet to correctly position the head in an up position when tacking and blocking during sports play. The cap can be detachably but securely attached to a football helmet and upper facemask in a position where it does not obstruct the view of the helmet wearer to a position where it does obstruct the helmet wearer's view and thus forces the helmet wearer to look up.

Hockey sticks or other tubular shafts have historically been cut using a hack saw with the shaft resting on the lip of a garbage can resulting in slow and inaccurate cuts. A new device for cutting a shaft comprises a holder for receiving the shaft, and an arm rotatably mounted at an end of the holder. The holder includes an internal passage, sized to receive the shaft, which extends outwardly through an opening at the end of the internal passage. A set of jaws are mounted on the rotating arm, each jaw includes a saw blade extending across the opening perpendicular to the shaft. The jaws are spring biased together at a first end for engaging the shaft, whereby relative rotation of the arm and the holder results in the saw blades sawing the end of the shaft off with high precision. Each jaw may include a lever arm extending from a second end thereof configured to receive an application of a user force to overcome the spring bias force to enable the set of jaws to be separated for mounting the shaft therebetween.

A sporting good implement, such as a hockey stick or ball bat, includes a main body. The main body may be formed from multiple layers of a structural material, such as a fiber-reinforced composite material. One or more microlattice structures may be positioned between layers of the structural material. One or more microlattice structures may additionally or alternatively be used to form the core of a sporting good implement, such as a hockey-stick blade. The microlattice structures improve the performance, strength, or feel of the sporting good implement.

A resistive training device to be worn by a user can include a first and second skate device configured to be worn on the user's feet. The first and second skate device can include a first plurality of attachment mechanisms. The first plurality of attachment mechanisms can include an interior attachment mechanism; an exterior attachment mechanism; and a rear attachment mechanism. The resistive training device can also include a belt configured to be worn around the user's waist. The belt can include comprising a second plurality of attachment mechanisms which can include a left hip attachment mechanism; a right hip attachment mechanism; and a tailbone attachment mechanism. The resistive training device can also include a plurality of resistive elements. Each resistive element can be removably connected to one of the first plurality of attachment mechanisms and one of the second plurality of attachment mechanisms.

A system simultaneously tracks multiple objects. All or a subset of the objects includes a wireless receiver and a transmitter for providing an output. The system includes one or more wireless transmitters that send commands to the wireless receivers of the multiple objects instructing different subsets of the multiple objects to output (via their respective transmitter) at different times. The system also includes object sensors that receive output from the transmitters of the multiple objects and a computer system in communication with the object sensors. The computer system calculates locations of the multiple objects based on the sensed output from the multiple objects.

A hockey puck is disclosed including an internal signal transmitter enabling instantaneous identification of its position as it moves around. The puck includes two molded subcomponents, which encapsulate the signal transmitter. The signal transmitter includes driver electronics and a number of signal transmitters which together generate and emit an electromagnetic signal. The electromagnetic signal is emitted by a plurality of diodes mounted in light pipes enclosed within cavities in the subcomponents that extend to outer surfaces of the hockey puck components. The puck includes two subcomponents that are attached via complimentary sets of concentrically arranged wedges.

Systems and methods for selectively enhancing the weight and aerodynamics of sporting equipment are provided. A system may include a piece of sporting equipment having openings extending through the sporting equipment. The system may include a plug operable to be secured within one of the openings extending through the sporting equipment. The plug may include a first end portion, a second end portion, and an attachment mechanism. The first end portion may include a first outer flange and a first body. The first outer flange may have a larger diameter than the first body. The second end portion may include a second outer flange and a second body. The second outer flange may have a larger diameter than the second body. The attachment mechanism may be configured to connect the first end portion to the second end portion to secure the plug within the one of the openings.

A hockey puck is formed as two mating subcomponents encapsulating an internal signal transmitter. The hockey puck includes holes extending from an external surface of the hockey puck into an internal void formed between the two mating subcomponents. The internal signal transmitter includes protrusions extending into the holes, each including a surface-mounted diode. The surface-mounted diodes include no lens cap, allowing the diodes to be positioned closer to the external surface of the puck than existing pucks. For improved visibility, the diode is positioned less than 5 mm from the external surface of the puck, but greater than 1 mm from the external surface of the puck, in order to prevent the diodes from being externally visible. Preferably, the diodes are positioned between approximately 2 mm and approximately 3 mm from the external surface of the hockey puck.

A hockey stick apparatus may include a hollow shaft structure having a proximal end and a distal end, and a blade structure coupled to the proximal end of the hollow shaft structure. The blade structure may include a top edge spaced apart from a bottom edge by a blade height, a heel spaced apart from a toe by a blade length, a front face spaced apart from a back face by a blade thickness. The blade thickness may vary along the blade height, and the top portion of the blade may have a greater blade thickness than a blade thickness of the bottom portion, and a stiffened top portion of the blade may have a first stiffness and a flexible bottom portion of the blade may have having a second stiffness, and the second stiffness may be less than the first stiffness.

Hockey goalkeeper leg pads wearable on legs of a hockey goalkeeper to protect the legs, in which the hockey goalkeeper leg pads may be configured to enhance performance, comfort and/or other aspects of goalkeeping of the hockey goalkeeper, including when the hockey goalkeeper leg pads drop onto a playing surface (e.g., ice) to lie substantially horizontally on the playing surface with their front facing play (e.g., as in a butterfly position or otherwise).