Plyometric Box Stacking Ribs Curvature Wedging

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Solution Overview

Problem

Plyometric boxes often become wedged together when stacked, making them difficult to separate and store efficiently.

Innovation Solution

The design incorporates stacking ribs with angled surfaces and fillets, allowing plyometric boxes to be stacked securely and easily unstacked by ensuring the bottom surfaces of the ribs are spaced upwardly from the sidewalls, with radii matching the platform's curvature, facilitating smooth stacking and unstacking.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If plyometric boxes are stacked together for storage, then storage space is reduced, but the boxes become wedged together and difficult to separate

Engineering Contradiction:
Improvestorage spaceVSAvoidease of separation
Core Design Contradiction:
Area of stationary objectVSEase of operation

Solution Approach 1:

The patent applies curvature by rounding the top corners of the box and creating curved stacking ribs with fillets. The rounded top corners prevent sharp edges from creating wedging points, while the curved stacking ribs with fillets (rounded transitions) allow smooth contact surfaces that reduce friction and prevent boxes from becoming stuck together during stacking and unstacking operations.

Inventive Principle:
Principle #14Spheroidality (Curvature)

Solution Approach 2:

The patent implements local quality by adding stacking ribs only at specific locations on the box sides, rather than making the entire surface curved or modified. The stacking ribs are positioned at corners and edges where contact occurs during stacking, providing localized functionality to prevent wedging while maintaining the overall simplicity of the box design.

Inventive Principle:
Principle #3Local quality

2Ease of operation

If stacking ribs are added to prevent wedging, then ease of separation is improved, but device complexity increases

Engineering Contradiction:
Improveease of separationVSAvoidstructural complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent segments the stacking function by adding discrete stacking ribs at specific locations (corners and edges) rather than modifying the entire box structure. This segmentation allows the stacking functionality to be distributed across multiple simple elements, reducing overall structural complexity while achieving the goal of easy separation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The stacking ribs incorporate fillets (rounded transitions) at their bases where they meet the box sides. This curvature creates smooth contact surfaces that prevent stress concentration and reduce friction, enabling easy separation without requiring complex mechanical features or additional components.

Inventive Principle:
Principle #14Spheroidality (Curvature)

Data Source

PatentUS11779789B2Plyometric box
Publication Date: 2023.10.10 COULTER VENTURES LLC
  • US11779789B2 patent drawing
  • US11779789B2 patent drawing
  • US11779789B2 patent drawing

AI summary

A plyometric box for includes a platform, a first pair of opposed sidewalls, and a second pair of opposed sidewalls. Each sidewall extends downwardly from the platform, and includes a first side, an opposed second side, a first pair of stacking ribs on an interior surface of the sidewall proximate the first side, and a second pair of stacking ribs on an interior surface of the sidewall proximate the second side. Each stacking rib extends downwardly from the platform along the sidewall and a bottom surface of each stacking rib is spaced upwardly from a bottom edge of the sidewall.