Drive Belt Transverse Segments With Undulated Hole Surfaces

The patent applies local quality by providing undulations only on specific surfaces (upper or lower) of the holes rather than uniformly across all surfaces. This creates localized variations in cooling rates at specific areas where needed, allowing differential cooling control to prevent deformation while maintaining weight reduction and cooling benefits.

The patent employs asymmetry by providing undulations on only one side (either upper or lower surface) of the holes instead of symmetrically on both sides. This asymmetric design creates intentional uneven cooling patterns that compensate for the natural cooling gradients during quench hardening, preventing plastic deformation while maintaining the weight and cooling advantages of the holes.

The patent applies curvature by providing undulations on the surfaces of the holes, creating wavy or curved surface patterns instead of flat surfaces. This increases the surface area of the holes without adding significant weight, thereby enhancing heat transfer and cooling efficiency during drive belt operation while maintaining the weight reduction benefit of having holes.

The patent transforms the cooling solution from a two-dimensional hole structure to a three-dimensional undulated surface structure. By adding surface complexity in the radial dimension through undulations, the patent significantly increases the effective cooling surface area without proportionally increasing weight, thus resolving the contradiction between weight reduction and cooling efficiency.

The patent applies local quality by providing undulations only on specific surfaces (either upper or lower) of the holes rather than uniformly across all surfaces. This localized approach enhances heat transfer efficiency at critical cooling locations while minimizing the overall structural complexity and manufacturing difficulty compared to uniform undulations on all surfaces.

The patent employs partial action by providing undulations on only one side (partial coverage) of the holes instead of comprehensively on all surfaces. This partial undulation strategy achieves sufficient heat transfer improvement for effective cooling while keeping the structural complexity and manufacturing complexity at acceptable levels, avoiding excessive action that would unnecessarily complicate the design.