US Patent Issued on Oct. 28 for "Bicycle rear hub drive mechanism" (Canadian Inventor)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,150, issued on Oct. 28.

"Bicycle rear hub drive mechanism" was invented by Jose Fernando Hsu (Surrey, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "A mechanism for bicycle wheel, that transfers drive motion from the drive-train to the wheel, while allowing non ratcheting freewheeling when coasting.The mechanism uses of a pair of face gears, with the first gear fixed within the hubshell, while the second gear is rotary fixed but allowed to move axially within the freehub. The second gear is attached to prismatic sliding joints with springs, coiled over a shaft fixed to the hubshell.Rotating the freehub in the forward direction by the drive-tr...