1. 27 April 2005Safety Lock Mailbox1 Safety Lock Mailbox ME 4182 - Final Presentation Carlos Alzate Brian Dorton Song Park Varun Sharma Jack Vasko Adam Zurawski

2. 27 April 2005Safety Lock Mailbox2 Presentation Overview Project Objectives and Goals Current Products Conceptual Design Design Evaluation Prototype Changes Prototype Review Possible Future Project Plans Questions

3. 27 April 2005Safety Lock Mailbox3 Project Objectives and Goals Scope of the Problem –Threat of personal information stolen –Identity theft via bills, documents, and packages Customer Needs –Vandalism-resistant, not vandalism-proof –Storage space large enough for small deliverable packages –Aesthetic appearance matching neighborhood codes

4. 27 April 2005Safety Lock Mailbox4 Current Products

5. 27 April 2005Safety Lock Mailbox5 MailGuard (A Division of Neogenesis, Inc.) MailGuard Locking Mailbox $89.95 http://www.mailguard.net/

6. 27 April 2005Safety Lock Mailbox6 The Belaire 20 Security Mailboxes www.securitymailbox.com www.securitymailbox.com Price –Steel: $219 –Black Paint: $245

7. 27 April 2005Safety Lock Mailbox7 Conceptual Design

8. 27 April 2005Safety Lock Mailbox8 3D Final Design

9. 27 April 2005Safety Lock Mailbox9 Dimensions of Full Assembly

10. 27 April 2005Safety Lock Mailbox10 View of Linkage When Door in Open Position (Floor Would be Closed)

11. 27 April 2005Safety Lock Mailbox11 Linkage Subassembly A B C D E

12. 27 April 2005Safety Lock Mailbox12 Linkage Dimensions

13. 27 April 2005Safety Lock Mailbox13 Floor and Tracks

14. 27 April 2005Safety Lock Mailbox14 Exploded View

15. 27 April 2005Safety Lock Mailbox15 Completed Assembly

16. 27 April 2005Safety Lock Mailbox16 2D Scissor and Roll-Up Floor

17. 27 April 2005Safety Lock Mailbox17 Mechanical Advantage of Floor Closing Mechanical Advantage exponentially decreases in last few degrees of closing

18. 27 April 2005Safety Lock Mailbox18 Prototype Review

19. 27 April 2005Safety Lock Mailbox19 Prototype Changes Scissor design –2 point contact Safety Door Placement –Design – Front; Prototype - Rear Tracks –Design – Teflon; Prototype - Wood Outer Shell –Design – Steel; Prototype – Scrap Metal –Re-enforced walls Floor –Used available box hinge

20. 27 April 2005Safety Lock Mailbox20 Final Prototype v. Design Safety Door Position Comparison

21. 27 April 2005Safety Lock Mailbox21 Disassembled Linkage

22. 27 April 2005Safety Lock Mailbox22 Floor and Linkage

23. 27 April 2005Safety Lock Mailbox23

24. 27 April 2005Safety Lock Mailbox24 Sliding Floor Transition Front Door Closed, Floor OpenFront Door Open, Floor Closed

25. 27 April 2005Safety Lock Mailbox25 Linkage in Operation

26. 27 April 2005Safety Lock Mailbox26 Closed and Open Floor

27. 27 April 2005Safety Lock Mailbox27 Open Front Door

28. 27 April 2005Safety Lock Mailbox28 Prototype Video

29. 27 April 2005Safety Lock Mailbox29 Possible Future Plans Improve mechanical advantage by cutting off last few degrees of closing Invest in teflon tracks Invest in more robust steel for outer shell Decrease linkage thickness for greater clearance

30. 27 April 2005Safety Lock Mailbox30 The Safety Lock Mailbox Questions?