Patent ID: 8127945

Claim:
A vertical tool rack storage device comprising: (a) two flat independent tool racks for holding tool bits; (b) a coupling structure for securing said two flat independent tool racks for allowing said two flat independent tool racks to be positioned relative to each other between an open position and a closed position; and (c) a locking structure for locking said two flat independent tool racks in said closed position, wherein the two flat independent tool racks are separable from and joinable to one another and, when joined to one another, are positionable relative to each other between the open position and the closed position, and wherein said coupling structure comprises a first recessed portion and a second recessed portion respectively, provided at the border of one side of each said flat independent tool rack, a retaining block disposed in said first recessed portion, and a swinging retaining ring extending from said second recessed portion in such a manner that the swinging retaining ring at one said flat independent tool rack can be connected on the retaining block in the first recessed portion at the other flat independent tool rack.