Refuse Container Lid Opening Device Drop-Down Tongue
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Solution Overview
Problem
Existing solutions fail to effectively prevent wild animals from opening waste containers stored outside, as they rely on snagging or gripping mechanisms that raccoons and other dexterous animals can manipulate to pry open the containers.
Innovation Solution
A lidded waste container design featuring a pivotally attached lid with an elongated tongue as the sole opening mechanism, requiring two hands to operate, ensuring that wild animals cannot access the contents without human intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional catches, snaps, or locking mechanisms are used to secure the lid, then the container becomes more resistant to opening, but the device complexity increases and additional securing mechanisms are required
Solution Approach 1:
The patent removes all traditional locking mechanisms, catches, and snaps from the container design. Instead, it extracts only the essential functional element needed to prevent animal access: a smooth-lidded container body combined with a bungee cord system that uses elastic tension rather than mechanical locking. This simplifies the device while maintaining effectiveness against wild animals.
Solution Approach 2:
The patent changes the fundamental parameter of lid surface texture from textured or grooved (which provides grip points) to completely smooth. This parameter change eliminates the ability of dexterous animals like raccoons to gain purchase on the lid, thereby preventing opening without requiring complex mechanical locks.
2Ease of operation
If the lid is designed with handles or grips for easy opening, then the ease of operation improves, but the container becomes vulnerable to being opened by wild animals
Solution Approach 1:
The patent introduces a bungee cord as an intermediary mechanism between the lid and the container body. This elastic cord provides the opening force needed without requiring direct manual gripping of the lid itself. Users pull on the bungee cord to open the lid, while the smooth lid surface remains ungrippable for animals. This mediator solves both the ease of operation and animal resistance requirements.
3Reliability
If additional securing mechanisms like bungee cords or locking systems are added, then the resistance to animal opening improves, but the device complexity and number of components increase
Solution Approach 1:
The patent makes the bungee cord serve multiple functions simultaneously: it acts as the primary securing mechanism to keep the lid closed, provides the opening force when pulled by a user, and replaces the need for separate locks, catches, or snaps. This multi-functionality achieves reliable waste storage security with a single simple component rather than multiple complex mechanisms.
Data Source
AI summary
A refuse container lid opening device includes a lid hingedly attached to a container body for covering the container body's top opening. The lid is free of grabbable handles or protuberances but an elongated tongue descending from its underside is received in a slot in the top rim of the container body and is accessible outward of the container body. Upward movement of the tongue when the lid is closed raises the lid above the top rim of the container body to form a manually accessible gap in which a hand can be inserted to fully open the lid.