theatlantic:

Nicholas Jackson:

Jimi Heselden didn’t invent the Segway, but he was the company’s owner Sunday when he tumbled off a cliff while riding an all-terrain version of the self-balancing vehicle. Maybe he would have invented something like the Segway, though, if Dean Kamen hadn’t gotten to it first.

… 

The Segway’s future is uncertain in the wake of this public relations nightmare, but Heselden was hardly the first to go because of a product he loved. Here, nine other inventors who were killed by their own inventions.