Abstract: A heat sink made of aluminum having both high strength and heat dissipation performance together is manufactured. In a method of manufacturing a heat sink made of aluminum by brazing a plurality of fins 13 on a heat dissipating substrate 11, the fin 13 comprises an Al—Mg—Si series alloy containing from 0.3 to 0.7% by weight of Mg, from 0.3 to 0.7% by weight of Si and the balance of Al and inevitable impurities, and is put to cooling at a rate of 50° C./min or more in a range from 450-500° C. to 300° C. in the cooling process after heating for brazing and, subsequently, artificial aging is applied at 100 to 250° C.

Abstract: An aluminum-copper clad member includes an aluminum-base member, a copper-base member and an insertion member made of pure aluminum or JIS A1xxx series aluminum alloy. The aluminum-base member and the copper-base member are clad via the insertion member. A heat sink includes a heat radiation portion made of aluminum-base material and provided with a plurality of tongue-like fins formed by skiving a surface layer of one side of the heat radiation portion and a thermal diffusion portion made of copper-base material and joined to the other side of the heat radiation portion via an insertion member made of pure aluminum or JIS A1xxx series aluminum alloy.

Abstract: Provided is a personal computer keyboard in which base and reinforcement plates excellent in heat dissipativity and homogeneous in heat dissipation, and with a mechanical strength are incorporated. The keyboard includes a base plate 24 on which key caps K1 to K9 are mounted; and a reinforcement plate 25 disposed on the lower side of the base plate 24, wherein the base plate 24 is constituted of an Al—Mg—Si based alloy plate including 0.2 to 0.8 wt % of Si, 0.3 to 0.9 wt % of Mg, 0.35 wt % or less of Fe and 0.20 wt % or less of Cu with the rest of Al and inevitable impurities and wherein the reinforcement plate 25 is constituted of a heat pipe panel.

Abstract: The mounting component for a cylindrical bushing is comprised of a mounting portion for a bushing into which a cylindrical bushing can be fitted. The mounting portion for a bushing is a clamping-type mounting portion, comprised of a receptacle and a cover that is separate from the receptacle, and the aforementioned cylindrical bushing is inserted and clamped between them. The aforementioned receptacle is comprised of a hollow holder with an arcuate cross section that holds the aforementioned cylindrical bushing. On the holder, two protruding joints are provided. The aforementioned cover is comprised of a hollow holder with an arcuate cross section that holds the aforementioned cylindrical bushing. On the holder, joints corresponding to the joints of the aforementioned receptacle are provided.

Abstract: A bracket made of an aluminum alloy for fixing an elastic mount to one of two members to be elastically connected to each other through the elastic mount interposed therebetween. The bracket is formed by extrusion, and has at least one aperture formed therethrough so as to extend in the direction of extrusion. A first succession of recessed and raised portions are formed on at least a part of a fixing surface that is fixable to the elastic mount, and a second succession of recessed and raised portions are formed on at least a part of an exposed surface thereof which is exposed to the atmosphere upon fixing of the bracket to the elastic mount. The recessed and raised portions extend in the direction of extrusion, and are formed alternately in a direction perpendicular to the direction of extension.

Abstract: An apparatus for automatically inserting a plug in and to a predetermined position therein a raw pipe such as an aluminum pipe which is to be drawn for instance in a drawbench. The apparatus comprises a suppport roller which supports a plug-supporting rod at its intermediate portion near to an end of the rod, the support roller bearing a lower surface of the portion and being movable along the plug-supporting rod. The apparatus further comprises a pipe-transporting device for transporting the raw pipe, which device grips both ends of the raw pipe so as to move it towards the plug-supporting rod in a direction in alignment with an axis of said rod. A pusher protrudes forward from the pipe-transporting device so that the device starts to carry the support roller at a given instant whereby the raw pipe is prevented from directly riding the support roller and is thus protected from being scratched, and forcible pressing of the plug onto an inner surface of the raw pipe being also avoided.

Abstract: A pipe centering apparatus is of such a structure that pipes of certain kinds such as aluminum short pipes transported by a conveyor are centered with their longitudinal centers aligned with each other, before the pipes are subjected to chamfering or other processes. The pipe centering apparatus in the invention comprises a pair of right and left gears in mesh with each other and rotatably mounted on a main frame, a pair of right and left racks respectively in mesh with the right and left gears, and a pair of right and left regulators respectively secured to the right and left racks so as to come into contact with ends of the pipes, wherein the gears are rotated to cause the regulators to move towards each other and to contact the pipe ends, thereby precisely centering the pipes even where the pipes are not of strictly the same length.

Abstract: Apparatus for automatically forming pointed ends for raw metal pipes such as aluminum pipes subject to a drawing process, the pointed end of the pipes being of a reduced diameter convenient for the drawing process. A transporting device moves each raw pipe, which is in alignment with an axis of a pipe inlet of a swaging machine for producing the pointed ends, to a position below the inlet. Each pipe is raised by a lifting device to a height of the pipe inlet so as to be chucked by a gripping device which moves forward to insert a leading end of the pipe into the inlet. The lifting device and the raw pipe are kept out of contact with each other while the leading end is being processed to form the pointed end at the inserted end in the swaging machine whereby efficiency and productivity are improved for the process.

Abstract: A metallic pipe-cutting apparatus is constructed to cut elongate metallic pipes such as aluminum pipes into shorter pipes of a predetermined length, and comprises a main body, a chuck disposed rearwardly of the main body so as to hold trailing ends of the elongate metallic pipes, and a supporter disposed forwardly of the main body, with the main body interposed between the chuck and the supporter. The supporter comprises supporting pins which are to be inserted in leading ends of the pipes whose trailing ends are clamped by the chuck, so that the pipes clamped at their both ends are moved intermittently a predetermined distance so as to be successively cut into the predetermined length, with their outer peripheral surfaces not being scratched or flawed due to sliding contact with clampers or other members.

Abstract: A process for producing a chassis for vehicles, which includes the steps of fabricating a single frame element of aluminum alloy, the frame element having an upper beam, a lower beam and a web portion connecting between the two beams, removing some of the web portion to a desired length, pulling the upper beam and lower beam of the web vacant portion in opposite directions so that the web vacant portion becomes an expanded opening, bending the frame element in accordance with the size and shape of the body of a vehicle to be placed on the chassis, and welding the terminating ends of the frame element to form an endless frame.