Abstract: A guard beam of an automotive door structure can be relatively light in weight and yet have sufficient impact load absorbing capacity with stable strength at low cost. The guard beam has a beam portion and palm portions at both ends of the beam portion integrally made of a high tension steel blank member. The beam portion has a substantially triangular cross section with a bottom plate portion, support plate portions extending from a peak of the triangular configuration remote from the bottom plate portion in a direction substantially perpendicular to the bottom plate portion and side plate portions each connecting each end of the support plate portions at the peak to the transverse edge of the bottom plate portion.

Abstract: An extruded good 11 is manufactured by extruding aluminum alloy or magnesium alloy and has an outline or profile forming beam 2, frame side attaching seat portions 3 respectively placed at the left and the right ends of the beam 2, a mount attaching seat portion 4 placed at a center of the beam 2, and a plurality of ribs 6 extending or bridging transversely between the front portion 2a and rear portion 2b of the beam 2. The extruded good 11 is cut by a predetermined or suitable thickness to obtain a blank 12 for the mount supporting member 1. The blank 12 is is subject to press machining in order to obtain mount supporting members of a desired or designed shape.

Abstract: A bumper reinforcement has a reinforcement main body (2) made of a long panel (3) having a trough-shaped cross-section along its whole length, a plurality of ridges (6) each expanding toward an open longitudinal side of the panel (3) are made on opposing faces of end portions of the reinforcement main body (2), resulting in curved end portions (5) of the reinforcement main body (2). Parallel beads (12) for controlling anti-buckling strength of the reinforcement are formed on opposing faces of an intermediate portion of the reinforcement main body except for its end portions.

Abstract: Steel containing, on a weight percent basis, 0.01 to 0.15% of carbon, 0.05 to 0.50% of silicon, 0.20 to 1.0% of manganese, 0.01 to 0.1% of aluminum, 0.3 to 2.0% of copper, 0.1 to 2.0% of nickel, 0.015 to 0.1% of niobium and 0.0005 to 0.0050% of calcium, the balance of its composition being iron and unavoidable impurities, is heated to a temperature of 1100.degree. C. to 1250.degree. C., and hot rolled. The hot-rolled steel is coiled at a temperature of 350.degree. C. to 500.degree. C. to prepare a hot-rolled steel sheet having a tensile strength not exceeding 65 kgf/mm.sup.2. The sheet is cold worked until a working strain of at least 15% is set up. The cold-worked product is heated at a temperature of 400.degree. C. to 550.degree. C. for 0.5 to three hours to yield a part having a tensile strength of at least 80 kgf/mm.sup.2 for an automobile, particularly its automatic transmission system.

Abstract: A baffle assembly for a fuel tank includes a baffle frame formed with an opening and a baffle member installed in the opening. The baffle member is formed from a mass of synthetic resin strings which are joined collectively into a sponge-like structure.

Abstract: A center member structure for use in a motor vehicle is disclosed which is designed to support thereon an engine unit. The center member structure comprises two pipe members arranged side by side and having first portions which extend in parallel and second portions which gradually separate from each other with increase of the distance from generally middle portions of the pipe members; and reinforcing plates welded to given portions of the pipe members to tightly combine the pipe members into a robust unit.

Abstract: A press-formed clutch drum of an automatic transmission of which inner and outer cylindrical surfaces are respectively formed with a first series of splines and a second series of inverted splines. The first and second series of splines are alternatively arranged in a ring so that each adjacent two splines are spaced by an interposal of a connecting portion defined therebetween. Each of the first and second series of splines comprises a pair of raised portions projected radially from the major cylindrical body of the drum, and a depressed portion interposed between the paired raised portions to form a groove in the major cylindrical body. The raised portions of the first and second series of splines are respectively projected inwardly and outwardly with respect to the center axis of the cylindrical body.

Abstract: A method of press forming plastic material by a press having upper and lower moulds, in which melt plastic material is extruded from an extruder and is supplied to a metering chamber. The metering chamber supplies a metered amount of material into a movable arm which moves over the mould surface area of the lower mould and injects the material from an injection port of the arm, while the arm is moving. By suitably controlling the movement of the arm and material supply from the metering chamber, a desired charge pattern formed by a parapet shaped injected material can be formed. Automatic programming by a microprocessing unit is also easy.