Blender Jug and Blade Profile to Eliminate Food Dead Zones

The patent applies curvature by designing the jug's lower section with an upwardly inclined curved surface that follows the contour of the blade assembly. This curved geometry prevents food accumulation by ensuring the surface is always sloping toward the blade, eliminating dead zones where food would otherwise collect. The coupling half also features a curved upper surface that matches this profile, creating a continuous smooth transition that maintains mixing efficiency.

The patent applies local quality by creating a non-uniform gap profile between the blade and jug interior. The gap is minimized in the critical lower section where food accumulation would occur, with the jug's upwardly inclined surface bringing the interior wall closer to the blade. This localized adjustment ensures thorough processing in the most problematic area while maintaining adequate clearance elsewhere for blade rotation.

The patent merges the jug interior lower section and the coupling half into a single integrated curved profile. By making these surfaces co-operative and continuous, the design simplifies manufacturing compared to creating separate complex components. The upwardly inclined surface of the jug body seamlessly transitions into the curved upper surface of the coupling half, forming a unified geometry that can be manufactured as one piece or precisely fitted components.