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

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

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

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

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

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

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

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

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

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

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

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