Ice Skate Blade Holder Composite Stiffness Weight

The blade holder is constructed using composite materials, specifically a foam core (such as polyethylene or polypropylene foam) surrounded by a rigid shell (such as nylon, carbon fiber, or fiberglass). This composite structure provides high strength-to-weight ratio, maintaining the necessary structural integrity and stiffness while significantly reducing the overall weight compared to traditional solid metal or dense plastic constructions.

Different regions of the blade holder are made from materials with different properties optimized for their specific functions. The core uses lightweight foam for bulk volume reduction, while the shell uses rigid materials for structural strength. The blade-retaining base may use yet another material composition optimized for blade attachment, creating a locally optimized structure that balances weight and strength requirements across different functional zones.

The composite construction with foam core and rigid shell creates a structure that is both lightweight and stiff. The foam core provides structural rigidity through its cellular structure while being extremely lightweight, and the rigid shell reinforces this stiffness while adding minimal weight. This composite approach achieves a superior stiffness-to-weight ratio compared to traditional homogeneous materials.

The blade holder incorporates curved and rounded design elements, such as the arch-shaped top portion and rounded edges, which distribute stress more effectively throughout the structure. These curved geometries enhance structural efficiency and stiffness while maintaining lightweight construction, as curved surfaces are inherently stronger than flat surfaces for the same material thickness.

The blade holder is divided into distinct components that can be manufactured separately and then assembled: the foam core, the rigid shell, and the blade-retaining base. This segmentation allows each component to be optimized and manufactured using the most appropriate process for that material, then joined together through overmolding or mechanical attachment, balancing manufacturing complexity with performance optimization.

The patent combines multiple manufacturing techniques into an integrated process, such as overmolding where the rigid shell is molded directly over the foam core in a single operation. This merging of processes reduces the number of separate manufacturing steps, tooling requirements, and assembly operations, thereby reducing overall manufacturing complexity despite the multi-material construction.