ALEXANDRIA, Va., Nov. 3 -- United States Patent no. RE51,103, issued on Nov. 3, was assigned to Mark Nalley (Murrieta, Calif.).
"Electronically actuated dumbbell weight training device having selectively connected weight plates" was invented by Mark Nalley (Murrieta, Calif.) and Robert Knight (Murrieta, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a dumbbell to be used during a weight lifting exercise program. The dumbbell includes a handle assembly and a pair of collars connected at opposite sides of the assembly. First and second sets of weight plates are detachably connected to each other and to the pair of collars. Each weight plate has an electric motor carried in a cavity formed t...