Intermediate Sleeve Slit Geometry for Stable Vibration Isolator Bonding

The patent changes the geometry of the slit from a simple linear form to one with curved end portions that extend in the circumferential direction. This dimensional modification of the slit structure prevents other intermediate sleeves from entering and becoming trapped, while still allowing the necessary diameter reduction deformation to occur. The curved configuration adds a circumferential component to the slit design, creating a more complex three-dimensional geometry that solves the problem of sleeve entrapment during blast treatment.

The patent introduces a slit that divides the intermediate sleeve into two portions along the circumferential direction, creating a segmented structure. This segmentation allows the sleeve to undergo diameter reduction deformation by enabling the two portions to move relative to each other, while the sleeve remains substantially intact and maintains its functional integrity. The slit creates flexibility without complete separation, achieving both deformability and structural coherence.

The patent applies curvature to the end portions of the slit, extending them in the circumferential direction rather than maintaining straight linear ends. This curved configuration creates a geometric feature that prevents other intermediate sleeves from entering and becoming trapped in the slit, even when the slit width is narrowed to achieve the desired pre-compression effect. The curvature acts as a mechanical barrier that eliminates the entrapment hazard while preserving the narrow width needed for effective pre-compression.