Abstract: A sink compound laminate molding process having a copper material in thickness of 0.1-0.8 mm placed at the bottom of the molding cavity with the bottom of the copper laminate fully bound to the bottom of the molding cavity, the copper being heated up to 300-600° C., and molten aluminum being filled into the molding cavity using a gravity casing process to create diffusion bonding to the interface between the copper and aluminum materials, molten aluminum being cooled and cured to avail an integrated compound laminate in a given profile of heterogeneous copper and aluminum.

Abstract: A digital input device is constructed with a housing carrying a circuit board having encoders for producing a cursor positioning control signal. The housing has an upright stub tube in a bottom wall thereof, a positioning member disposed at an outer end of the upright stub tube, a ball receptacle disposed at an inner end of the upright stub tube, and a link coupled to the ball receptacle and the positioning member for enabling the housing to be moved relative to the positioning member and adapted to drive the encoders to output a cursor positioning control signal for controlling positioning of a cursor on a display screen when the housing moved relative to the positioning member.

Abstract: A portable data backup device. The device has a flash memory reader to read digital data from a flash memory card, an input unit for producing a control signal, a backup unit for storing digital data, and a control unit coupled to the input unit. The device can read digital data from the flash memory card and store it to the backup unit after receiving the control signal.

Abstract: An assembly device and method for assembling a housing having a first component and a second component. The second component is fixed onto the first component by the assembly device such that the surfaces of the housing are not scraped. The assembly device comprises a holding portion and a recess disposed on the holding portion for receiving the second positioning portion and fixing the second component onto the first component. The assembly method comprises the steps of engaging the assembly device with the second positioning portion and rotating the assembly device to bend the second positioning portion such that the second component is fixed onto the first component.

Abstract: A winding chain dissipating unit suitable for an electronic device is disclosed. The winding chain dissipating unit has a winding chain outer tube, a winding chain inner tube, and heat pipe within the winding chain inner tube. The inner diameter of the winding chain outer tube is matched with the outer diameter of the winding chain inner tube so as to have a smaller front end and a larger rear end. Moreover, an elastic element is installed at a position between the front end of the winding chain inner tube and the front wall of the winding chain outer tube so that the winding chain inner tube generates a continuously front pulling force to the winding chain outer tube. Once a wear from rotation friction therebetween is formed, the winding chain inner tube will move forwards gradually so as to automatically adjust and compensate the gap from the wear.

Abstract: A process for making metal-matrix composites includes: purging a refining chamber filled with molten metal matrix in a furnace by an inert gas such as nitrogen gas; filling a reinforcing material, preferably with particulates, in a bucket suspended above the molten metal matrix filled in the furnace; applying a forced drafting on the reinforcing material in the bucket for subsequently upwardly drafting the reinforcing material from the bucket; and downwarddly forcing the uprising reinforcing material to be homogeneously distributed into the molten metal matrix under homogeneous agitation, for producing a metal-matrix composite reinforced with reinforcing material in a closed system wherein the nitrogen gas is served merely for Initially purging the air outwardly from the system, not being consumed continuously in order for greatly saving the nitrogen consumption and reducing the production cost thereof.