Patent ID: 7971892

Claim:
A unitary monocoque frame for a bicycle, said unitary monocoque frame comprising: a right half shell having a peripheral edge, said right half shell including an integrally formed head tube portion and an integrally formed seat tube collar, said head tube portion is circumferentially enclosed thereby defining a first cylindrical opening that is adapted for receiving a fork steerer tube therethrough; a left half shell having a peripheral edge symmetrical with said peripheral edge of said right half shell, said left half shell including a curved surface to join with said head tube portion and a cupped recess to receive said seat tube collar therein; and wherein one of said right and left half shells includes a tongue extending along and protruding from at least a portion of said peripheral edge thereof in mating engagement with a groove extending along and recessed in at least a corresponding portion of said peripheral edge of said other one of said right and left half shells to join said right and left half shells forming said unitary monocoque frame.