1. RollerBlade
... . Next in 1823, Robert John Tyers created the "Rolito" but the five wheels on the bottom of a boot couldn't make turn so it also was a failure . In 1863 an American, James Plimpton solved the turning problem. His version had two sets of wheels and worked on rubber springs, one set under the heel the other under the ball of the foot ... ...
- Word Count: 893
- Approx Pages: 4
- Has Bibliography
- Grade Level: High School