Portable Hoist Arm Assembly Coupling Mechanism

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Solution Overview

Problem

Existing hoist arm assemblies lack an efficient and versatile mechanism for coupling to vertical supports, limiting their adaptability and stability in various applications.

Innovation Solution

A portable hoist arm assembly comprising a pair of pivotally coupled bars, first couplers, and contractors, where the bars are configured to abut a vertical support, with a connector for a hoist line, enabling secure and adjustable attachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If existing hoist arm assemblies use simple coupling mechanisms, then the device complexity is reduced, but the adaptability to different vertical supports deteriorates

Engineering Contradiction:

Improvecoupling mechanism complexityVSAvoidadaptability to vertical supports

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The coupler assembly is designed with multiple coupling modes to interface with different vertical support structures. The first coupler engages with the vertical support while the second coupler connects to the hoist arm, creating a universal interface that adapts to various support configurations without requiring multiple specialized coupling devices.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The coupling mechanism is divided into separate functional components: a first coupler for attaching to the vertical support, a second coupler for connecting to the hoist arm, and contractors for securing the connection. This segmentation allows each component to be optimized for its specific function while maintaining overall adaptability.

Inventive Principle:

Principle #1Segmentation

2Device complexity

If existing hoist arm assemblies use fixed coupling positions, then the device complexity is reduced, but the adjustability of positioning deteriorates

Engineering Contradiction:

Improvecoupling structure complexityVSAvoidadjustability of positioning

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

The coupling assembly incorporates movable and adjustable components that allow the coupling position to be dynamically changed. The bars can be positioned at different angles and locations along the vertical support, and the contractors can be adjusted to secure the bars in various positions, enabling flexible positioning without requiring multiple fixed coupling structures.

Inventive Principle:

Principle #15Dynamics

3Ease of manufacture

If existing hoist arm assemblies lack secure coupling mechanisms, then the ease of installation is improved, but the stability of the hoist arm deteriorates

Engineering Contradiction:

Improveease of installationVSAvoidstability of hoist arm attachment

Core Design Contradiction:

Ease of manufactureVSStability of the object's composition

Solution Approach 1:

The coupling mechanism is pre-configured with contractors positioned to contract and secure the bars to the vertical support. The bars are pre-positioned to abut the vertical support, and the contractors are arranged to tighten and lock the connection, ensuring stable attachment is achieved automatically during installation without requiring additional stabilization steps.

Inventive Principle:

Principle #10Preliminary action

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 solution provides a stable and adaptable hoist arm assembly that securely couples to vertical supports, enhancing usability and stability in different applications by allowing adjustable positioning and attachment of a hoist line.

Implementation Method 1

The bars are configured to be positioned so that second termini of the bars abut the vertical support

Methodology Applied

Scientific EffectGravitation: Gravitation

Implementation Method 2

The contractors are positioned to contract to couple the bars to the vertical support

Methodology Applied

Scientific EffectMechanical Force: Mechanical Force

Implementation Method 3

The contractors are positioned to contract to couple the bars to the vertical support

Methodology Applied

Scientific EffectCompression: Compression

Implementation Method 4

The contractors are positioned to contract to couple the bars to the vertical support

Methodology Applied

Scientific EffectFriction: Friction

Data Source

PatentUS10112806B1Portable hoist arm assembly

Publication Date: 2018.10.30 DAHL JAMES R

AI summary

A portable hoist arm assembly for coupling to an existing vertical support includes a pair of bars, a pair of first couplers, and a pair of contractors. The bars are pivotally coupled proximate to first termini of the bars. The first couplers are configured to couple to a vertical support. Each contractor is coupled to and extends between a respective first coupler and an associated bar proximate to the first terminus. The bars are configured to be positioned so that second termini of the bars abut the vertical support. A first bar extends substantially perpendicularly from the vertical support. A second bar extends angularly and downwardly from the first bar to the vertical support. The contractors are positioned to contract to couple the bars to the vertical support. A connector is coupled to the first bar proximate to the first terminus and is configured to couple to a hoist line.