Patent ID: 6213910
Filing Date: 2001-04-10
Classification: B62H,B62K,B62M,H01H,Y10T

Abstract:
A bicycle antitheft device comprising:an antitheft mechanism switchable between an antitheft state and a release state;wherein the antitheft mechanism includes:a rotatable first member that rotates relative to a second member to move the bicycle forward and backward;wherein the first member comprises a hub shell, and wherein the second member comprises a hub axle;a movement controlling mechanism that hinders the first member from rotating relative to the second member when the antitheft mechanism is in the antitheft state;a planetary gear mechanism including:a sun gear that rotates around the axle;a planet gear that engages the sun gear; anda ring gear that engages the planet gear; anda selection mechanism for selecting one of the antitheft state and the release state.