1. Pocket Board

5. “Bike thefts remain number one campus crime” – Stanford Daily

9. Problem Constraints Safe Small size Easy to use
Support 220 pound rider
Small size
Average skateboard
28 – 32 inches long
7 – 8.5 inches wide
Easy to use
3 minutes or less

10. Problem Objectives Safe Stylish Durable Portable Lightweight Intuitive
Average weight: 6 – 9 pounds
Intuitive
Folding mechanism
Ride
Cheap
Average cost: $20 - $400

11. Design Metrics Objectives Metrics Safe
Scale: Total Points = 10 - # ways to cause bodily harm
Intuitive
Scale: 1 – 10 by subjective evaluation
Cheap
Scale: Total Points: 10 – cost/$50
Portable
Scale: by subjective evaluation
Lightweight
Scale: Total Points = 10 – weight in pounds/2
Stylish
Durable
Scale: based on performance in tests

12. Existing Solutions: SNAP Skateboard
Aluminum
Hinges
Steel pins
36 inches to 14 inches
$119

13. Existing Solutions: SNAP Longboard
Simple design
Canadian Maple
38 inches to 19 inches
10 pounds
$179

14. Existing Solutions: Stowboard
Aluminum and plastic
Complex folding system
30 inches to 11 inches
6 pounds
$ 99.95
3 wheels

15. Classic Folded Skateboard
Single hinge down the middle to conveniently reduce the length of the board.
Did not use space efficiently

16. Offset Double Fold Skateboard
Two hinges that are skewed to one end that allows the trucks and wheels to efficiently use all the space
Unsymmetrical
Altered center of mass

17. Triple Fold Skateboard
Skateboard consisting of 3 folds that are symmetrical that allow the board to greatly be reduced in size.
Not esthetically pleasing

18. Skateboard with Detachable Wheels
Skateboard with removable trucks that allow the board to be split into two parts, the board and the trucks and wheels
Did not solve the portability problem
Large cost
Put user in danger

19. Extendable Skateboard
Board composed of two small board pieces connected via rails, that allow them to expand into a board and compress into a portable board.
Removed unnecessary space

20. Interlocked Skateboard
Board that is composed of two halves that connect together to form a full board.
High risk to user

23. Machinery and Equipment Usage
Materials Used
Cost of Material
Skateboard (31.02” x 7.99”)
$25.19
Two Retractable Rods
$17.56
Nuts, Bolts, and Screws
$4.50
Machinery and Equipment Usage
$2.50
(+, =) Total Cost:
$49.75

25. Dr. Goldsmith and Dr. Le Cory Bloome
Acknowledgements
Dr. Goldsmith and Dr. Le Cory Bloome