Weight distributing chair stabilizing device

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Solution Overview

Problem

Lawn chairs tend to sink into soft or uneven ground surfaces, such as wet soil or grass, due to the instability of their legs, leading to undesirable movement and lack of effective stabilization solutions.

Innovation Solution

A multi-part chair stabilizing device with a plurality of stabilizing members, each featuring a planar bottom surface for ground engagement and a top side with a linear channel and recess to securely receive chair legs, evenly distributing weight and preventing sinking into soft soil.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If chair legs directly contact the ground surface, then the chair structure remains simple, but the chair legs sink into soft soil and the chair becomes unstable

Engineering Contradiction:
Improvechair stabilityVSAvoidstabilizing device structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent introduces stabilizing members as intermediary elements between the chair legs and the ground surface. These stabilizing members have a larger surface area than the chair legs, allowing them to distribute the chair's weight over a broader area and prevent sinking into soft soil. The stabilizing members act as a mediator that transfers the load from the narrow chair legs to the wider ground contact area, resolving the contradiction between maintaining simple chair structure and achieving stable chair placement.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If stabilizing members with large surface area are used, then weight distribution improves and sinking is prevented, but the device becomes more complex and harder to transport

Engineering Contradiction:
Improveweight distributionVSAvoidtransport convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent divides the stabilizing device into multiple separate stabilizing members that can be individually attached to or removed from the chair legs. Each stabilizing member is a discrete component with optimized dimensions that balance surface area for weight distribution with portability for transport. This segmentation allows the device to provide stable weight distribution when in use while being easy to transport and store when not in use, as the individual members can be separated and carried conveniently.

Inventive Principle:
Principle #1Segmentation

3Adaptability or versatility

If the stabilizing members have fixed configuration, then manufacturing is simpler, but the device cannot adapt to different chair types and configurations

Engineering Contradiction:
Improvechair configuration compatibilityVSAvoidstabilizing member production
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent designs the stabilizing members with universal features that allow them to accommodate different chair types and configurations. The stabilizing members incorporate adjustable attachment mechanisms and standardized interface features that can work with various chair leg dimensions and orientations. This universality enables a single stabilizing member design to serve multiple chair configurations, achieving adaptability without significantly complicating the manufacturing process, as the core stabilizing member geometry remains consistent across different applications.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

The device effectively stabilizes lawn chairs on soft ground by evenly distributing weight across multiple stabilizing members, preventing leg sinking and ensuring stability on both soft and uneven surfaces.

Implementation Method 1

evenly distributes weight imparted upon a ground surface

Methodology Applied
Scientific EffectWeight distribution: Pascal's Law

Implementation Method 2

the weight of the chair is equally distributed so as to stabilize the chair even on soft ground

Methodology Applied
Scientific EffectPressure distribution: Pressure Increase

Implementation Method 3

configured to selectively receive a respective chair support member therein... stable friction fit engagement

Methodology Applied
Scientific EffectFriction engagement: Friction

Data Source

PatentUS9554650B1Weight distributing chair stabilizing device
Publication Date: 2017.01.31 HUBBARD SR ROLAND C
  • US9554650B1 patent drawing
  • US9554650B1 patent drawing
  • US9554650B1 patent drawing

AI summary

A weight distributing chair stabilizing device for use in stabilizing a chair having at least a pair of spaced apart support members includes a plurality of stabilizing members, each having a planar bottom side configured to engage a ground surface and an opposed top side configured to receive a respective support member of the chair. The top side of each stabilizing member defines a linear channel extending between opposed peripheral edges of the top side, the channel being configured to selectively receive a respective chair support member therein. The stabilizing members may be a set of four circular discs although stabilizing members having other shape configurations would also work. When equally spaced apart on a ground surface, the support members of the chair may be positioned thereon and, as a result, the weight of the chair is equally distributed so as to stabilize the chair even on soft ground.