Multi-Level Watch Component Nested Metal Layers

The patent applies nesting by placing one metallic layer inside a cavity of another metallic layer. Specifically, a first metallic layer is formed with a cavity, and a second metallic layer is deposited within this cavity, creating a nested structure where the second layer is partially enclosed by the first layer. This nesting arrangement provides mechanical interlocking that significantly strengthens the bond between layers while maintaining manufacturing simplicity through sequential electroplating processes.

The patent transitions from planar layer stacking to three-dimensional interlocking by introducing cavities with non-perpendicular flanks. Instead of simple horizontal layering, the cavity geometry extends in multiple dimensions with inclined surfaces that prevent layer separation. This dimensional change from two-dimensional stacking to three-dimensional interlocking enhances mechanical strength while preserving ease of manufacture.

The patent segments the manufacturing process into distinct electroplating stages, each forming a specific metallic layer with defined geometry. Instead of requiring a single complex resin mold to define the entire three-dimensional shape, the process divides the component into multiple layers that are sequentially deposited. Each electroplating stage uses a relatively simple mold structure, avoiding the need for intricate multi-level resin molds while achieving high manufacturing precision through controlled sequential deposition.

The patent performs preliminary actions by forming each metallic layer completely before proceeding to the next layer. The first metallic layer is fully deposited and its cavity is completely formed before the second metallic layer is introduced. This preliminary completion of each layer simplifies the mold requirements for subsequent stages, as each stage works with a already-formed structure rather than requiring complex simultaneous multi-level molding.

The nested structure where one metallic layer is deposited within the cavity of another creates mechanical interlocking that prevents layer separation. The second layer is partially enclosed by the first layer, creating a mechanically robust connection that maintains reliability under shear and tensile stresses. This nesting approach preserves manufacturing flexibility through sequential electroplating while eliminating the separation issues of simple layer stacking.

The patent creates a composite structure by combining multiple metallic layers with different geometries into a single integrated component. The first metallic layer with its cavity and the second metallic layer deposited within it form a composite assembly with enhanced mechanical properties. This composite structure maintains the flexibility of separate electroplating processes while achieving the reliability of a unified, interlocked component that resists separation under mechanical stress.