What was once a sketch in his college notebook has become a reality for a Sarasota man. 

University of South Florida graduate Sean Chan has been working on a first-of-its-kind bicycle for several years. Now, he has finally reinvented the bicycle wheel. 

"It's a long process, but it's a great feeling," said Chan, who worked on a chainless bicycle for more than three years. 

Chan said the process started during his USF days when he had to lug his bicycle up and down his dormitory stairs. 

"Back and forth, back and forth, and doing it for like a year," Chan said. "I realized this is very cumbersome." 

Chan said he had an "a-ha" moment when he saw another student snap the chain on their bike. 

Thats when he went to work on creating a bicycle that was both chainless and portable. 

What started as a simple sketch morphed into an engineered into a 25-pound prototype. And with the help of his dad, Chan got his prototype into the hands of manufacturers overseas. 

One of the things that makes the bike so unique is that it's pretty easy to fold, all it takes is a couple of latches. Then, the rider can lift it up, fold it in half, and they're ready to go. 

"It's for the people who want to commute, and also for people who also want to just take a bike and go to a state or national park," Chan said. "You just throw it in the trunk and when you get there you have a full-sized bike and you're good to go." 

While there are other chainless bikes on the market, Chan says this is the world's first tungsten powered bike with the peddles linking directly to the back wheel. 

"It doesn't require any practice to ride the bike, it'll actually come natural," Chan said.  

Now, Chan hopes to get his invention into bike shops around the country. 

"The sky's the limit, especially when you're living in the U.S.," Chan said. "There's a lot of opportunities."