Abstract: A micro droplet controlling apparatus. A dielectric layer is disposed overlying a substrate. A first electrode and a second electrode are disposed in the dielectric layer, wherein the first electrode is isolated from the second electrode, and the first and second electrodes are disposed at different positions. A micro droplet is disposed overlying the dielectric layer, wherein the first electrode and the second electrode are applied with voltage to generate a driving force to move the micro droplet.

Abstract: Multiple disc read and write systems and two-way disc clamping mechanisms thereof are provided. A two-way disc clamping mechanism includes a frame, two parallel support components, two parallel clamp components, an L-shaped drive component, and a spring. Space between the two parallel clamp components is a clamping space. The L-shaped drive component comprises a contact end and a driving end. The contact end contacts one of the two parallel clamp components. When the driving end receives an external force, the contact end generates a pushing force on one of the corresponding parallel clamp components by leverage. The clamping space is modified by adjusting the external force to clamp or release a disc. The two-way disc clamping mechanism allows the disc to enter the clamping space from a left side or a right side thereof.

Abstract: Disk changer devices and correlated disk acquisition procedures and disk management system. In the disk changer devices, an interface unit is coupled to a host system, at least one disk storage unit stores a plurality of disks, and a control unit is coupled to the interface unit. A disk acquisition unit is coupled to the control unit, and comprises a gripper retrieving a desired disk from the disk storage unit, a first driver moving the gripper along a vertical direction, a second driver moving the gripper along a horizontal direction, and a disk push unit comprising at least one disk push rod, pushing the desired disk to the gripper from the disk storage unit, wherein the control unit drivers the gripper to retrieve the desired disk and deliver it to a disk processing unit, according to a command from the host system.

Abstract: An improvement of boss for a pressure vessel which has a plastic internal liner and a filament wound around outer shell and an opening at one end of the outer shell. The boss is made by pressing a metallic material and has a double wall neck projecting outwardly through the opening. The neck has an outside wall which extends radially at one end opposite the opening to form a flange embedded in the liner to form an air tight binding. The flange has an annular V-shaped notch ring in the upper surface and a plural number of protrusive stubs on the lower surface thereof to strength the binding with the liner for withstanding high pressure without leaking or rupture.