1. Evolution of Product Design
Introduction to Engineering Design TM
Unit 1 – Lesson 1.1 – Introduction to Design Process
History of a Product
When do changes take place?
Where do these changes come from?
What advantages and disadvantages are associated with these changes?
Room Key
Talk about the fast paced society. Ask students about environmental and human impacts, both positive or negative, when a change takes place. Use the automobile as an example.
Project Lead The Way, Inc.
Copyright 2007

2. Evolution of Product Design
Introduction to Engineering Design TM
Unit 1 – Lesson 1.1 – Introduction to Design Process
History of a Product
Why do we change products?
Who impacts these changes?
Discuss our fast paced society and the rising cost of shipping.
Discuss the impact of visual appeal.
Project Lead The Way, Inc.
Copyright 2007

3. Evolution of Product Design
Introduction to Engineering Design TM
Unit 1 – Lesson 1.1 – Introduction to Design Process
Evolution of Product Design
Pose essential questions to help spark interaction between you and the students:
What comes to mind when you hear the word “evolution”?
Why is it important to research the history of a product?
Project Lead The Way, Inc.
Copyright 2007

4. Evolution of Product Design
Introduction to Engineering Design TM
Unit 1 – Lesson 1.1 – Introduction to Design Process
A Product’s Changing Lifecycle
Concept or redesign
Change in “needs”
Research
New materials and/or technology
Sketching & development
Manufacture
Test
Market & distribution
Feedback
This is an important slide to go over for students to understand the process a product goes through during its changes.
Project Lead The Way, Inc.
Copyright 2007

5. Evolution of Product Design
Introduction to Engineering Design TM
Unit 1 – Lesson 1.1 – Introduction to Design Process
The First Toothbrush
Some records indicate a version of the toothbrush dates back as far as 5000 years ago. Babylonians rubbed a “chew stick” on their teeth and mouth to keep them clean.
Project Lead The Way, Inc.
Copyright 2007

6. Evolution of Product Design
Introduction to Engineering Design TM
Unit 1 – Lesson 1.1 – Introduction to Design Process
The Bristle Toothbrush
In 1498 a bristle toothbrush was created in China. The bristles were actually the stiff, coarse hairs taken from the back of a hog's neck and attached to handles made of bone or bamboo.
Project Lead The Way, Inc.
Copyright 2007

7. Evolution of Product Design
Introduction to Engineering Design TM
Unit 1 – Lesson 1.1 – Introduction to Design Process
American Contributions
The first American to patent a toothbrush was H.N. Wadsworth in the 1850s.
Companies in the U.S. started mass producing the toothbrush around 1885.
Most Americans did not brush their teeth until Army soldiers in World War II were taught the habit of tooth brushing and brought their enforced habit back home.
Project Lead The Way, Inc.
Copyright 2007

8. Evolution of Product Design
Introduction to Engineering Design TM
Unit 1 – Lesson 1.1 – Introduction to Design Process
Nylon Bristles
Natural bristles were used in toothbrushes until nylon was discovered. In 1938, nylon, invented by Dupont, replaced the natural bristle. One of the first nylon toothbrushes to commercialize the industry was called Doctor West’s Miracle toothbrush.
Project Lead The Way, Inc.
Copyright 2007

9. Evolution of Product Design
Introduction to Engineering Design TM
Unit 1 – Lesson 1.1 – Introduction to Design Process
Electric Toothbrush
In 1960 the first commercialized electric toothbrush was marketed in the United States.
The Broxodent shown above was marketed by the Squibb company.
Project Lead The Way, Inc.
Copyright 2007

10. Evolution of Product Design
Introduction to Engineering Design TM
Unit 1 – Lesson 1.1 – Introduction to Design Process
Electric Toothbrush
The Broxodent shown above was marketed by the Squibb company.
Sonicare™
Project Lead The Way, Inc.
Copyright 2007

11. Evolution of Product Design
Introduction to Engineering Design TM
Unit 1 – Lesson 1.1 – Introduction to Design Process
Ergonomic Design
vs.
A pioneer in this transformation was Dr. Robert Hutson, a periodontist from San Jose, California.
Hutson invented the first toothbrush with soft end-rounded nylon bristles. He named the product "Oral-B".
Project Lead The Way, Inc.
Copyright 2007

12. Evolution of Product Design
Introduction to Engineering Design TM
Unit 1 – Lesson 1.1 – Introduction to Design Process
Electronic Advancements
Toothbrush designs are now starting to include electronics. The Radius™ toothbrush has a built-in timer that blinks light or plays music to let you know how long to brush.
Radius™
Project Lead The Way, Inc.
Copyright 2007