High-Pressure Pump Piston Rod Curvature for Compact Load Bearing

The patent applies curvature by providing at least two curved bearing surfaces (first and second bearing surfaces) with different radii of curvature on the piston pin arrangement. The first bearing surface has a first radius of curvature while the second bearing surface has a second radius of curvature, creating optimized contact surfaces that increase bearing area while maintaining compact component dimensions. This curved surface design resolves the contradiction by providing larger bearing surfaces without proportionally increasing overall component size.

The patent applies local quality by providing bearing surfaces with different radii of curvature optimized for different loading conditions. The first bearing surface with its first radius of curvature and the second bearing surface with its second radius of curvature are locally optimized to distribute loads efficiently. This allows the component to handle maximum loading requirements while maintaining smaller overall dimensions and reduced mass compared to a uniform design.

The patent resolves the efficiency issue by implementing curved bearing surfaces with optimized radii of curvature. The first and second bearing surfaces are curved with different radii, creating optimal contact geometry that improves load distribution and pumping efficiency while maintaining manufacturing feasibility. This curved surface approach eliminates the need for large unequal flat surfaces while achieving superior efficiency.