The present invention relates to a composite sports article. The composite sports article includes: a first component and a second component which was produced by means of an additive manufacturing technique. The first component and the second component are bonded to each other by a first bonding agent and there is a form-fitted bond between the first bonding agent and the second component and/or the first component and the second component are bonded to each other in a form-fitted manner via a first bonding agent.

Disclosed is a method of resistance welding between composite articles. A conductive element is provided between faying surfaces, having a plurality of lower resistivity electrode portions spaced apart along the length of the contact area between the composite articles. The electrode portions can be used to spot weld across the electrode portions, and along a longitudinal portion of the conductive element between the electrode portions by application of an electrical current. Also disclosed are apparatus for use in the resistance welding methods and composite articles and structures and elements incorporating the conductive element.

A balance trainer having a dome and a base formed integrally is provided. Also, a mold assembly for manufacturing the balance trainer that has a dome mold, a girdle, and a cover is provided. The girdle is sleeved on the dome mold and the cover is fixed on the girdle and thereby a cavity is formed in the mold assembly. Furthermore, a manufacturing process of the balance trainer is also provided. The process has the following steps: preparing ingredients of the dome and the base; feeding the ingredients of the dome into the dome mold; fixing a membrane on the dome mold via the girdle; feeding the ingredients of the base; sealing the ingredients via the cover; and then rotational molding. With the process and the mold, the rotational molding step can mold two materials at the same time, so the product can have two parts with different hardness.

A method is provided for fabricating a unitary element, such as an exercise weight, including a composite material. The method includes providing a plurality of solid fragments including at least one non-thermoplastic material. The method further includes providing a plurality of solid particles including at least one thermoplastic polymer and/or elastomer material, at least 75% of the solid fragments having sizes in a fragment size range from zero to 32 millimeters and at least 75% of the solid particles having sizes in a particle size range from zero to 1.5 millimeters. The method further includes forming a mixture of the plurality of solid fragments and the plurality of solid particles, the mixture including 90% to 20% of the fragments by volume and 10% to 80% of the particles by volume. The method further includes molding or extruding the mixture into a unitary element through the application of heat and/or pressure.

The present invention relates to a mould (1) for kids for making jewelry from a granular water-sensitive product, comprising: —a hollow body (2) having an opening (3) defining a respective forming zone; —a first element (4) combined with the hollow body (2) for closing-opening the opening (3) at a first side of the forming zone; —a second element (5) combined with the hollow body (2) for closing, and possibly opening, the opening (3) at a second side of the forming zone; wherein at least one among the hollow body (2), the first element (4) and the second element (5) comprises a plurality of holes (6) which are open in the forming zone, such that the forming zone is fluidically communicating with the environment outside of the mould (1).

The present invention relates to a composite sports article. The composite sports article includes: a first component and a second component which was produced by means of an additive manufacturing technique. The first component and the second component are bonded to each other by a first bonding agent and there is a form-fitted bond between the first bonding agent and the second component and/or the first component and the second component are bonded to each other in a form-fitted manner via a first bonding agent.

A mouth guard senses impact forces and determines if the forces exceed an impact threshold. If so, the mouth guard notifies the user of the risk for injury by haptic feedback, vibratory feedback, and/or audible feedback. The mouth guard system may also remotely communicate the status of risk and the potential injury. The mouth guard uses a local memory device to store impact thresholds based on personal biometric information obtained from the user and compares the sensed forces relative to those threshold values. The mouth guard and its electrical components on the printed circuit board are custom manufactured for the user such that the mouth guard provides a comfortable and reliable fit, while ensuring exceptional performance.

A method of forming a barrel portion including obtaining a mandrel shaped to define at least an inner surface of a barrel portion of the bat, wrapping a first plurality of layers of fiber composite material about the mandrel, placing a removable material over a first portion of the first plurality of layers, and wrapping a second plurality of layers of fiber composite material over the removable material and the portion of the first plurality of layers not covered by the removable material for form an assembly. The method further includes separating the mandrel from the assembly, inserting an expandable member within the assembly, inserting the assembly into a barrel-forming mold, and molding the assembly in a single molding cycle, curing the first and second layers with the removable material to form the barrel portion of the bat, and removing the removable material and the member from the barrel portion.

Described herein is a method for producing a toy, in particular a toy car. According to a preferred embodiment, said method envisages implementing a process of injection moulding that envisages a first step of forming the base body (40) of the toy car, and, then, a second step of forming the wheels (60), which is carried out directly on the base body formed previously. The toy car obtained is characterized in that it presents a connection that cannot be separated between the wheels and the base body.

In one example, a method includes positioning, within a mold, a device with a movable element that defines a portion of a volume, and the volume is contained within the mold, as part of a molding process, at least partly defining a molded watercraft by introducing plastic into the mold, disposing the plastic about the movable element, and with the movable element, excluding the plastic from the portion of the volume that is defined by the movable element so as to define a recess and an undercut that are integral with the watercraft and extend lengthwise with respect to a centerline of the watercraft, and the recess and undercut are integral, and communicate, with each other.