Bag Roll Dispenser With Orthogonal Side Guards

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing roll-mounted bag dispensers fail to prevent bag rolls from falling out, are not easy to refill, and are not designed for compact spaces, nor are they economical or easy to clean, especially in damp environments where metal materials can rust.

Innovation Solution

A multi-use dispenser with a planar base, vertical bag constraining support, core guides, primary and secondary side guards, and a core pin system that allows for secure retention and dispensing of bag rolls from either side, using high-strength plastics to prevent moisture absorption and corrosion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If steel wire and plate with chrome plating or paint is used for dispenser construction, then rigidity and longevity are improved, but weight increases and susceptibility to rust and corrosion in damp environments occurs

Engineering Contradiction:

ImproverigidityVSAvoidrust and corrosion

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The patent replaces traditional steel wire and plate construction with plastic materials that can be easily replaced. The dispenser components such as the container, lid, and internal structures are made from plastic that can be discarded and replaced as a unit, eliminating the need for maintenance of metal components in damp environments.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent employs plastic materials that combine multiple properties: structural integrity for rigidity, moisture resistance for corrosion protection, and lightweight characteristics. The use of plastic encapsulation and composite construction allows the dispenser to maintain strength while being immune to rust and corrosion.

Inventive Principle:

Principle #40Composite materials

2Strength

If steel wire and plate construction is used for dispensers, then structural rigidity is improved, but the dispensers become heavy and expensive to produce

Engineering Contradiction:

Improvestructural rigidityVSAvoiddispenser weight

Core Design Contradiction:

StrengthVSWeight of stationary object

Solution Approach 1:

The patent adopts disposable plastic components that replace heavy metal structures. The entire dispenser assembly can be manufactured as a lightweight plastic unit that is replaced periodically, eliminating the weight penalty of metal construction while maintaining sufficient structural rigidity for the application.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent changes the material parameters from metal to plastic, which fundamentally alters the weight-to-strength ratio. Plastic materials provide adequate structural rigidity for bag dispensing while being significantly lighter than steel wire and plate constructions.

Inventive Principle:

Principle #35Parameter changes

3Duration of action of stationary object

If traditional metal dispensers are used, then longevity is improved, but ease of cleaning is reduced due to complexity and potential for corrosion

Engineering Contradiction:

ImprovelongevityVSAvoidease of cleaning

Core Design Contradiction:

Duration of action of stationary objectVSEase of operation

Solution Approach 1:

The patent employs disposable plastic dispensers that are designed for easy cleaning or replacement rather than long-term maintenance. The smooth plastic surfaces without complex metal joints or coatings can be quickly sanitized, and the entire unit can be replaced if needed, simplifying the cleaning process compared to traditional metal constructions.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

4Adaptability or versatility

If the dispenser is designed to accommodate various bag roll sizes, then adaptability is improved, but device complexity increases

Engineering Contradiction:

Improveaccommodation of various bag roll sizesVSAvoiddispenser structure complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent designs a universal dispenser structure with adjustable components that can accommodate different bag roll sizes. The lid with its hinged opening and the internal container are designed to flexibly adapt to various roll diameters, allowing a single dispenser design to serve multiple bag types without increasing overall structural complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent incorporates dynamic elements such as the hinged lid and flexible container walls that can adapt their shape and position based on the bag roll size. This dynamic design allows the dispenser to accommodate varying roll dimensions through simple mechanical adjustments rather than complex fixed structures.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS8875968B2Multi-use bag dispenser

Publication Date: 2014.11.04 TAN DANIEL BRIAN

AI summary

A multi-use dispenser for roll mourned bags includes a planar base with at least one mounting feature and a bag roll support. The support is attached to the base and is spaced upwardly there from. First and second core guides, spaced apart by at least a width of a bag roll, extend upwardly adjacent first and second ends of the bag roll support. A pair of primary bag roll retainers includes a first side guard and a second side guard mounted orthogonally to the first and second core guides, orthogonally to a long axis of the bag roll support, and spaced apart by at least the width of the bag roll. The side guards have angled brackets at their outer ends. The side guards constrain ejection of a bag roll. At least one snagging device is mounted to engage a central portion of a bag attached to the bag roll.