1. Unit 91 Week 5 Presentation Jon Gutierrez, Chris Sauer, Simon Radomski, Chat Huynh, Jeff Burton, & Robert Platt September 17, 2008 Patents Presentation

2. Last Week Task Assignment Design Partition Problem Statement

3. Frame Assembly for a Bicycle Patent #7267351 Issued: Sep 11, 2007 Allows for 2 water bottles Claims a dual suspension bike with a shock extending from the rear axle to the main frame Claims shock ratios associated with the shock placement

4. Specialized Epic FSR

5. Bicycle Suspension Apparatus and Related Method Patent #7296815 Issued: Nov 20, 2007 Claims upper and lower rocker arms Chain torque lines coincides with both rocker arm lines at the same point Claims reduced bobbing Claims brakes are positioned to not interfere with suspension travel

6. Ellsworth Dare

7. Rear Suspension System for Two- Wheeled Vehicles, Particularly Bicycles Patent #6843494 Issued: Jan 18, 2005 Claims upper and lower links that create a nearly vertical wheel path Claims small and constant amount of chain extension to limit pedal feedback Claims a 4-bar linkage allows this

8. Rocky Mountain Bicycles ETSX 50

9. Rear Suspension System for Bicycle Patent #6199886 Issued: Mar 13, 2001 Claims geometry that allows very little change in chain length during travel, therefore reducing pedal feedback and bobbing Claims angle between 18 and 30 is about 90degrees, therefore reducing bob

10. Cycle Suspension Assembly Patent #7395892 Issued: Jul. 8, 2008 Claims increased suspension travel possible Claims reduced bobbing

11. Regular RidingLanding Jumps Problem Statement Update Characteristics Soft Supension High Traction Characteristics Hard Suspension Maximum force to rider

12. Problem Statement Update Begin Impact End Impact Characteristics Low Initial force Characteristics High Final Force Goal: allow the rider additional reaction time

13. Problem Statement Update Rear wheel should travel rearward or vertical This allows suspension to react to obstacles like rocks without binding Rear wheel Suspension Path Obstacle “rock” Pivot point on main frame

14. Next Week Selection Analysis  Selection analysis best 5 conceptual designs including, engineering specifications and evaluation criteria to assess each.