The multi-millionaire owner of Segway was killed Sunday after driving one of the company's popular two-wheeled vehicles off a cliff, British newspapers reported.
Heselden, 62, made millions after inventing a bullet-proof defense shield that became standard equipment for NATO, as well as for British and U.S. troops.
Segway was bought by a British company backed by Heselden.
Heseldenwas found in the river alongside his Segway at about 11.40am by a passerby, according to local paper the Yorkshire Post.