Reinforced Flexible Spline Coupling for High Torque Misalignment

The patent applies local quality by reinforcing only specific areas of the elastomeric spline element - specifically the tooth roots and engagement zones - using embedded rigid inserts or laminated composite structures. This localized reinforcement increases torque capacity at critical stress points while preserving the flexibility and damping characteristics of the bulk elastomeric material, thereby maintaining misalignment accommodation capabilities without requiring overall stiffening of the entire element.

The patent employs composite materials by combining rigid reinforcing elements (such as metal inserts, fiber-reinforced laminates, or rigid polymer cores) with the elastomeric matrix material. This composite construction creates a hybrid structure where the rigid components provide structural support and torque transmission strength, while the elastomeric portions maintain flexibility, damping, and adaptability to misalignment, thus resolving the contradiction between strength and versatility.

The patent applies parameter changes by modifying the material properties of the elastomeric element - specifically selecting materials with optimized durometer hardness, damping coefficients, and viscoelastic characteristics. By carefully selecting and tuning material parameters, the coupling achieves high damping capacity in a compact size, eliminating the need to increase physical dimensions to meet damping requirements.

The use of composite materials with strategically placed rigid inserts or laminated structures enhances the damping characteristics of the coupling element without requiring increased size. The combination of rigid and elastomeric components creates beneficial stress distributions and energy dissipation mechanisms that improve damping capacity while maintaining a compact, simple coupling design.