Appendage-Mounted Display With Closed-Loop Tensioning

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Solution Overview

Problem

Conventional wearable electronic display mounts lack a customizable fit, leading to discomfort, restricted movement, and potential interference with blood circulation due to disparate tightness levels and inability to accommodate varying arm sizes or clothing thicknesses, often requiring two hands to adjust and causing the display to rotate out of place.

Innovation Solution

An appendage-mounted display apparatus featuring a cuff assembly with a closed-loop tensioning system, comprising upper and lower panels with structural mesh-coated foam and guide clamps, allowing for uniform compressive force and one-handed adjustment, along with a modular device mount for various electronic devices and printed materials.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional adjustable attachment means (watch band, shoelace, hook-and-eye closures) are used to affix the display platform, then the circumference can be adjusted, but a uniformly tight fit across all areas of the user's forearm cannot be achieved

Engineering Contradiction:
Improveadjustability to different arm circumferencesVSAvoiduniform tightness across the forearm
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The patent employs a flexible band with a continuous loop structure that can conform to the contours of the user's forearm. The band incorporates a tensioning mechanism with a ratchet or cam lock that allows one-handed adjustment while maintaining uniform distributed pressure across the entire contact surface, resolving the contradiction between adjustability and uniform tightness.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The attachment means utilizes a tensioning mechanism that changes the mechanical parameter of tension distribution along the band. By incorporating a cam lock or ratchet system, the band can be adjusted to different tension levels while maintaining that tension uniformly across all contact points, enabling both adaptability to different arm sizes and stable uniform fit.

Inventive Principle:
Principle #35Parameter changes

2Device complexity

If preformed rigid 'C' or 'U' shape display platforms are used, then the structure is simple, but persons with unusually large or small arms or persons wearing unusually thick or thin clothing cannot be accommodated

Engineering Contradiction:
Improvestructural simplicityVSAvoidaccommodation of varying arm sizes and clothing thicknesses
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent replaces rigid preformed structures with dynamic, adjustable components. The band is designed to be flexible and resizable, allowing it to adapt to different arm circumferences and clothing thicknesses. The tensioning mechanism enables the structure to change its dimensional parameters dynamically, accommodating a wide range of users while maintaining structural integrity.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The attachment means is designed as a universal solution that can accommodate various arm sizes, shapes, and clothing conditions. The adjustable band with tensioning mechanism serves multiple functions: it secures the display platform, adapts to different circumferences, and maintains uniform pressure distribution, making the device universally applicable to diverse users.

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

3Adaptability or versatility

If adjustable attachment means are used, then the circumference can be customized, but two hands are required to tighten the straps and the user must cease activity to adjust

Engineering Contradiction:
Improvecustomizable fitVSAvoidone-handed adjustment capability
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The tensioning mechanism is designed to be self-regulating and easy to operate with one hand. The cam lock or ratchet system allows the user to tighten or loosen the band by simply pushing or pulling a lever or button, without requiring the other hand to hold or stabilize any component. This self-service design enables quick adjustment during activity cessation.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent introduces an intermediary mechanical element (cam lock, ratchet, or button mechanism) that mediates between the user's single hand and the tensioning band. This intermediary component translates a simple pushing or pulling motion into effective tension adjustment, eliminating the need for two-handed operation and allowing quick customization during use.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Force

If conventional attachment means are used, then the display platform can be affixed, but the display may rotate out of place when the user turns or moves their arm

Engineering Contradiction:
Improveattachment forceVSAvoidpositional stability of the display
Core Design Contradiction:
ForceVSStability of the object's composition

Solution Approach 1:

The flexible band maintains constant contact with the forearm through its conformability, distributing attachment force uniformly around the arm. This continuous contact and uniform pressure distribution prevent the display platform from rotating or shifting during arm movements, enhancing positional stability while maintaining secure attachment.

Inventive Principle:
Principle #30Flexible shells and thin films

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

Provides a comfortable, secure, and adjustable fit for different users, allowing hands-free access to electronic devices and reference materials without restricting movement or causing discomfort, accommodating various arm sizes and clothing types, and enabling quick, one-handed adjustments.

Implementation Method 1

the closed-loop tensioning system being configured to pull the upper panel and the lower panel substantially radially inward toward the user's appendage such that a uniform level of compressive force about the user's appendage is achieved

Methodology Applied
Scientific EffectCompressive force: Compression

Data Source

PatentUS9144168B2Appendage-mounted display apparatus
Publication Date: 2015.09.22 THE GOVERNMENT OF THE UNITED STATES AS REPRESENTED BY THE SECRETARY OF THE AIR FORCE
  • US9144168B2 patent drawing
  • US9144168B2 patent drawing
  • US9144168B2 patent drawing

AI summary

An appendage-mounted display apparatus comprising a device mount for attaching electronic devices and a cuff assembly that provides a uniform tension fit around a user's appendage. The cuff assembly comprises a multi-layer blend of soft and rigid components and a ratcheting lacing or strap system to achieve a customizable, non-slip fit that may be quickly and easily adjusted with one hand. The device mount may be adapted to accommodate a variety of electronic devices including mobile phones, smartphones, and other communication devices, portable computers, maps, audio and music devices, global positioning system devices, and other interactive electronic devices and displays, as well as paper maps, checklists, and other static forms of guidance and instruction. In addition, the device mount may include a rail system for attaching a flashlight and/or other tools.