Gas Spring Lid Lifting Device for Hands-Free Dumpster Operation

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Solution Overview

Problem

Large commercial trash containers present a challenge as their heavy lids are difficult to open and maintain open with one hand, leading to hygiene issues and non-compliance with commercial ordinance requirements, especially when handling multiple or heavy trash bags.

Innovation Solution

A device with metal mounting brackets, a gas spring, and adjustable fiberglass arms that attach to the dumpster, allowing the lid to be lifted and maintained open with both hands free, featuring a gas spring mechanism for easy opening and closing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a person uses one hand to hold the lid open, then the lid can be kept open for trash disposal, but the person cannot use both hands to handle trash bags and hygiene is compromised

Engineering Contradiction:
Improvehands-free operationVSAvoidhygiene contamination
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The device enables the lid to serve itself by automatically opening and staying open through the spring mechanism, eliminating the need for human hand support. The spring-loaded arm self-activates when the lid is lifted and maintains the open position without requiring continuous human intervention.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The spring-loaded arm acts as an intermediary between the lid and the user's hands. Instead of the user's hand directly holding the lid, the mechanical arm serves as a mediating element that supports the lid weight and maintains the open position, allowing hands to be free for trash handling.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If a person uses their head to keep the lid open, then the lid can be held open, but hygiene is compromised and the task becomes unpleasant

Engineering Contradiction:
Improvelid holding capabilityVSAvoidhygiene contamination
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The device enables the lid support function to serve itself through the spring mechanism, eliminating the need for human head or hand support. The mechanical system autonomously maintains the lid in the open position through stored elastic energy in the spring.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The spring-loaded arm serves as a mechanical intermediary that replaces the human body parts (head or hand) in the lid support function. This mediator eliminates direct contact between the user and the potentially contaminated lid edge.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of operation

If the lid is left open to facilitate trash disposal, then access is improved, but animals, birds, vermin, and weather can contaminate the trash

Engineering Contradiction:
Improvetrash disposal accessVSAvoidenvironmental contamination
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The device provides dynamic lid position control rather than a fixed open or closed state. The spring mechanism allows the lid to be easily held in various open positions during trash disposal, then automatically returns to the closed position when released, enabling adaptive response to user needs while maintaining protection when not in use.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The lid automatically returns to the closed protective position through the spring mechanism's restoring force, eliminating the need for manual closing action. This self-closing feature ensures the trash container is automatically protected from environmental contaminants after each use.

Inventive Principle:
Principle #25Self-service

4Ease of operation

If a heavy lid is manually opened and held open, then trash can be disposed of, but the user experiences physical strain and difficulty

Engineering Contradiction:
Improvelid opening capabilityVSAvoiduser effort required
Core Design Contradiction:
Ease of operationVSForce

Solution Approach 1:

The spring mechanism provides a counterbalancing force that opposes the weight of the lid. When the lid is lifted, the spring extends and stores energy, then releases this energy to help hold the lid open, effectively counteracting the lid's weight and reducing the user effort required to open and maintain the open position.

Inventive Principle:
Principle #8Anti-weight (Counterweight)

Solution Approach 2:

The device replaces the purely manual mechanical system (user arm strength) with a spring-based mechanical assistance system. The spring-loaded arm provides mechanical advantage through elastic energy storage and release, substituting for the user's direct muscular effort in holding the heavy lid open.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables users to handle trash without holding the lid, maintaining hygiene and compliance by keeping the lid open with both hands free, while the gas spring mechanism ensures easy operation and cleanliness.

Implementation Method 1

a gas spring mechanism for easy opening and closing

Methodology Applied
Scientific EffectGas spring: Spring

Data Source

PatentUS11280125B1Lid lifting device
Publication Date: 2022.03.22 FIRM FRESH LLC
  • US11280125B1 patent drawing
  • US11280125B1 patent drawing
  • US11280125B1 patent drawing

AI summary

An apparatus and method for easily and simply lifting and holding upon a heavy cumbersome lids, such as those found on large trash containers thereby allowing the user the use of both hands for hoisting and dumping the trash without having to hold open the lid with one hand or other body part. Furthermore, the use of an external device to lift and hold open the lid makes it easier to keep the task hygienic.