Patent ID: 7516972

Claim:
A bicycle rear frame, comprising: a mandrel having two opposite threaded ends; a hub rotatably mounted on the mandrel; a freewheel secured on one side of the hub to rotate the hub; two rear fork end members each having a rear end mounted on a respective threaded end of the mandrel and each having a first side rested on the hub and a second side formed with a first tapered face; two rear stays each having a rear portion mounted on a front end of a respective rear fork end member; two press members each mounted on a respective threaded end of the mandrel and each having a first side formed with a second tapered face rested on the first tapered face of a respective rear fork end member; two locking nuts each screwed onto a respective threaded end of the mandrel and each having a side rested on a second side of a respective press member to press the respective press member and the respective rear fork end member toward the hub.