Pivoting Handles on Waste Containers for Safe Stacking
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Solution Overview
Problem
Existing waste disposal containers, particularly those made of paperboard, pose safety hazards during transportation due to the risk of puncture from glass, plastics, or sharp materials, and their handles often obstruct disposal openings or require complex assembly.
Innovation Solution
A portable waste container with four side panels hingedly connected to a bottom closure, featuring pivotally movable handles that create gaps when in use, allowing for safe handling and easy stacking, and a removable top closure that covers these gaps when not in use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If fixed handles are used on waste disposal boxes, then lifting strength is improved, but device complexity and stacking difficulty increase
Solution Approach 1:
The patent applies the dynamics principle by using pivot handles that can rotate between a stowed position (coplanar with the box surface) and a deployed lifting position (angled away from the surface). This dynamic configuration allows the handles to provide lifting strength when needed while maintaining a flat profile for easy stacking and storage, thereby resolving the contradiction between lifting strength and device complexity.
2Ease of operation
If handles pivot out from the top surface of the box, then lifting is enabled, but safety is worsened due to hand proximity to waste material
Solution Approach 1:
The patent applies the dimensionality change principle by positioning the pivot handles on the side surfaces of the box rather than the top surface. The handles pivot outward from the side surfaces at angles between 30-150 degrees, which allows users to grasp and lift the box from the sides while keeping hands away from the top opening where waste material is located. This spatial repositioning resolves the contradiction between lifting capability and safety.
3Device complexity
If single-handle boxes are used, then device complexity is reduced, but productivity decreases due to limited box size
Solution Approach 1:
The patent applies the asymmetry principle by providing handles on only two opposite side surfaces of the box rather than all four sides. This asymmetric configuration reduces device complexity compared to having handles on all sides, while still providing sufficient lifting capability for larger box sizes and greater waste disposal capacity. The selective placement of handles on opposite sides creates an efficient balance between simplicity and productivity.
4Ease of operation
If handles stick out from the box, then lifting is facilitated, but stacking difficulty increases
Solution Approach 1:
The patent applies the dynamics principle by designing handles that can rotate between a deployed position for lifting and a stowed position that is coplanar with the box surface. When not in use, the handles lie flat against the side surfaces, allowing boxes to be stacked horizontally and vertically without interference from protruding handles. This dynamic stowability resolves the contradiction between lifting facilitation and stacking arrangement.
Data Source
AI summary
A portable container for waste products, having an assembled receptacle with four side panels hingedly connected, the four side panels connected to a plurality of bottom closure panels forming a bottom closure, with the four side panels and the bottom closure define a box with a top opening. The four side panels include a first and a second set of opposing side panels, the first set of opposing side panels having a first side panel and a second side panel. A first side panel has a first handle, the first handle having a first handle first position and a first handle second position. A second side panel has a second handle, having a second handle first position and a second handle second position. The first handle and the second handle are opposably, pivotally, movable relative to each other.