Deformable ring clamping device for warp-free disk stack assembly in a data storage disk drive

A disk drive having:

• at least one recordable and readable disk;
• a frame;
• an electrical motor supported for rotation by said frame, said electrical motor comprising a stator and a rotor;
• said rotor supported for rotation by said frame;
• a hub member supported by said rotor for rotation therewith;
• said hub member comprising a flange;
• said hub member supporting on said flange said at least one recordable and readable disk having an annular surface area surrounding a central aperture;
• a first clamping ring disposed to exert force onto said annular surface area of said recordable and readable disk and supported on said hub;
• a second clamping ring concentric with and axially deformable relative to said first clamping ring, and
• a deformable ring disposed intermediate said clamping rings, and at least one manually operable holding device interconnecting said clamping rings and said hub for forcing said second clamping ring toward said first ring and toward said hub,
• said deformable ring comprising a deformable exterior and an interior including a fluidic material encased therewithin,
• thereby compressing said deformable ring and exerting substantially equally distributed force on said recordable and readable disk over said annular surface area surrounding said central aperture in said recordable and readable disk,
• whereby the clamping forces generated by said at least one holding device are uniformly distributed to said at least one recordable and readable disk.