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Introduction
Project Description Client Project Description
Easel Market Existing Patents Preliminary Designs
Material selection Mechanical
Analysis
Optimal Design LED system
Prototype Materials Testing
Concluding Remarks
The Project
National Science Foundation Engineering Projects to Aid Persons with
DisabilitiesMission- To assist individuals in reaching
their maximum potential for enjoyable and productive lives
ClientsDr. Brooke Hallowell (NSF)Patty Mitchell (Passion Works Art Director)
Cerebral Palsy
Cerebral palsy is a condition resulting from brain damage
The symptomsLoss of fine motor abilityAbnormal muscle toneAbnormal movementsVision problems
Project Objectives
Construction of an easily adjustable easelCan be used by individuals with cerebral
palsyCan be used in a studio environment with
minimal supervisionCan be adjusted with the help of an
assistant.Resolution of previous design issues
Previous Projects
Design Issues Stated by Dr. Hallowell: Complicated actuator Hazard due to exposed
electrical cords Could not be moved
easily The canvas could not
be positioned over the artist
No light sourceSenior Design Project 2003
Design Constraints
No electrical cordsNo electric motorsEasily adjustableCan attach to a specific tableCan be positioned over the userCan hold specific canvas dimensionsCost is below $750
Marketed Easels
Able Table Positives
Price: $64.95 Versatile use Supports 30 lbs.
Difficult to adjust Somewhat Fragile
ABLEDATA.com
Marketed Easels
Versa Table Price: ~$115.00 Positives
Lightweight Portable Easy to use Easy to store Adjusts for height,
depth, and angle Does not adjust to
desired position of clientABLEDATA.com
Marketed Easels
“The Dreamer” Advantages:
Motorized Stable Allows for large
canvases Adjusts to height,
length, and direction Disadvantages
Very large No storage options Expensive: $3,025
Mouthstick.net
Patents
Inclined adjustable A-frame style easel with sliding drawer (Patent 6,045,108)
Easel adjusted by means of a crank (Patent 5,074,513)
Ornamental foldable portfolio with adjustable easel (Patent D249,533)
Easel 5000 Specific Objectives
Support up to 20”x24” Canvas or a 9”X36” aluminum sheet
User friendlyPortableStableNo motors or electrical parts requiring a
wall outlet.Relatively inexpensive (<$750)
Design 1
Canvas Attachment Frame
Easel Extender Arms
Easel Base
• Wooden Construction• Integrated Shelf• Storage Compartment
Design 2
Adjustable Beam Slide
Canvas Holder
Easel Extender Arms
Easel Base
Locking Gas Spring
• Aluminum ConstructionAluminum Construction• Utilizes lockable sliding trackUtilizes lockable sliding track• Includes simpler canvas holderIncludes simpler canvas holder• Most expensive designMost expensive design
Design 3/Optimal Design
Locking Gas Spring
Extender Arm
Canvas Holder
Canvas Base
• Aluminum ConstructionAluminum Construction• Locking Gas SpringsLocking Gas Springs• Sliding ShelfSliding Shelf• LED lightLED light
Prototype
PhasesMachine shop certificationPart OrdersCut pieces for constructionConstruct + Design of the LED systemFinal prototype constructionTesting/troubleshootingDocumentation
Prototype
MaterialsEasel frame consists of 80/20 extrusions80/20 considered to be “industrial erector
set”LED system designed with Express PCB
LED Encasement from Hammond Mfg.
Prototype Subunit – Extension Arms
2–arm system implemented for stability180–degree pivot joints for large range of
motion
Prototype Subunit – Canvas Holder
Able to hold canvas sizes up to 20”x24”
Adjusted using 180–degree pivot joints to extend range of motion even more
Can be positioned to be over artist
Prototype Subunit – Canvas Clamp
Rubber stripping on clamp to hold canvas in place
Able to support painting surfaces of various shapes and materials
Prototype Subunit – LED System
Battery powered (rechargeable) Dimming option Adjustable positions by use of friction hinge
Testing
Simulated Motion RestrictionsNo movement of the left armTester was reclined
Center for Students with DisabilitiesContacted an individual with CP
Asked to draw semi-complex shapesCirclesCartoon charactersAnimals
Testing
Six Testers Three independent
One individual with CP Three Group Positive reviews from
each Adjustability, ease of
use “Cool” LED system Unique design
Budget
Part of Project Allowance
LED Light 148.55 PCB 99.87
Battery 68.71 End Caps 25
Easel Frame 505.95 Total
Finishing Touches 35.91 124.87
Shipping 57.1
Total-Allowance
Total 816.22 691.35
Conclusion
‘Easel 5000’ includes new, easy to use featuresEasy adjustability with user-friendly interfaceBattery powered lighting systemAttaches to wheelchair tray
Finished easel to be sent to Passion Works Studio for artists’ use
Acknowledgements
Professor John Enderle - BME Department Head Chris Liebler - Teaching Assistant BME 290/291 Patty Mitchell - Art Director for Passion Works Studios Brooke Hallowell – NSF Coordinator Professor Robert Northrop - BME professor UConn John Parmelee - head of set design for UConn Joyce Frank - Studio Coordinator for Passion Works Studios Kurt Jamlin - Sales Representative for LEDtronics Nicki Sobcinski - Sales Representative for Reell Incorporated Jeff Dutches - Sales Representative for OKW Enclosures Hammond Manufacturing Paul Dufilie - ECE department Jennifer Lucia – Center for Students with Disabilities Contact The Testers – Liz, Lauren, and Jen.