US Patent Issued to SRAM on March 31 for "Bicycle gear shifting system" (Illinois Inventors)

ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,830, issued on March 31, was assigned to SRAM LLC (Chicago).

"Bicycle gear shifting system" was invented by Christopher Shipman (Chicago), Brian Jordan (Highland Park, Ill.) and Sage Hahn (Chicago).

According to the abstract* released by the U.S. Patent & Trademark Office: "A bicycle front shifting system includes operable to transmit a wireless signal, a crank assembly with two crank arms and a pedal on each of the two crank arms. The crank assembly is rotatable about a rotation axis. A front shift unit is coupled to the crank assembly and is rotatable about the rotation axis. The front shift unit includes a chain ring component with a big chain ring and a small chain ring. The...