ALEXANDRIA, Va., June 9 -- United States Patent no. 12,286,183, issued on April 29, was assigned to Dive Xtras Inc. (Everett, Wash.).
"Devices for retaining a bicycle chain on a sprocket" was invented by James Alexander Davis (Brier, Wash.), Benjamin McGeever (Shoreline, Wash.) and David P. Heiss (Mukilteo, Wash.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A device for retaining a bicycle chain on a sprocket includes a base plate defining a plurality of fastener openings centered on an origin. A center of each of the plurality of fastener openings is disposed at a first radial distance from the origin. The origin defines an axis extending substantially orthogonally from a plane defined by two lines extend...