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Attic Lift. Team Up Phillip Nichols – Mark Zoller – Chris Jacobs – Ed Fleiss – Josh Marcy June 11, 2008. Overview. Problem Statement Partition Existing Designs Concept Designs Selection Mock-up. Problem Statement.

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attic lift

Attic Lift

Team Up

Phillip Nichols – Mark Zoller – Chris Jacobs – Ed Fleiss – Josh Marcy

June 11, 2008

overview

Overview

Problem Statement

Partition

Existing Designs

Concept Designs

Selection

Mock-up

problem statement

Problem Statement

The vast majority of residential homes are built with folding wooden attic stairs

These stairs are very difficult to transport heavy and/or bulky items to and from the attic space.

Carrying the items while climbing the stairs leaves the homeowner with no free hands to stabilize themselves, greatly increasing the likelihood of injury.

problem statement4

Problem Statement

Our goal is to design a system which adapts to the home’s existing folding ladder to provide a platform for easily raising and lowering a load to and from the attic space.

The mechanism will have convenient controls as well as adequate safety devices to prevent operator injury.

partition

Partition

Lowering/raising rail system and platform from attic

Securing the object

Tilt control

Clear the attic entrance

existing designs

Existing Designs

Upper level frame and winch raise and lower a platform by winding and unwinding cables

Patent application number: 11/238,415

Inventor: Jason Hartley

Sold at www.theatticlift.com

existing designs7

Existing Designs

Specialized staircase, mounting frame, and trolley attached to a winch via 4 cables.

Trolley and mounting frame roll to side once at top to allow access.

Patent No. 6,962,236 by Jay Penn in 2005

www.spaceliftproducts.com

existing designs8

Existing Designs

Upper level frame and winch raise and lower a platform by winding and unwinding cables

Uses a custom ladder with a carriage and crane system to move packages up attic stairs.

Crane Actuates to move said package when carriage reaches top of the attic stairs.

Patent application number: 11/564,534 by Daniel Harry Corby Quare

existing designs9

Existing Designs

Assembly is positioned in its own ceiling cutout, separate from attic stairs

Platform raised and lowered by power screw within permanent rail structure

Motor drives the screw to raise and lower the platform

Patent No. 5,626,208 by Randy Sprague in 1997

concept designs

Concept Designs

Telescopic tube frame

Wheeled cart

Conveyor

Cable lift

Scissor lift

slide11

Telescopic Tube Frame

Stationary Arms

Motorized Winch

Winch Cable Inside

Attic Floor

Flexible Joint

Telescopic Tube Frame

Existing attic

Ladder

Attached Platform

Ground Floor

SIDE VIEW (lowered)

selection

Selection

1. Wheeled cart (relative score = 1.00)

- Simple, effective design and easy to use

2. Cable lift (relative score = 0.98)

- Very capable, but more complicated

3. Conveyor belt (relative score = 0.95)

- Overrated?

4. Product: Spacelift 6000 (relative score = 0.91)

5. Telescopic tube frame (relative score = 0.87)

6. Patent pending: Combo lift and ladder (relative score = 0.83)

7.  Scissor lift (relative score = 0.68)

- Less reliable and highly complex structure

selection17

Selection

Final choice: Wheeled cart, with modifications

Additional cables to level cart

Detachable cart

Large wheels

selection18

Top View of Cart

Selection

Side View on Ladder