Abstract: A two-sided surface grinding apparatus capable of eliminating undulations of concentric circles produced in the work surfaces by grinding, thereby further improving the degree of flatness of the work surfaces after grinding includes a pair of support pads which hold work outwardly of grinding whetstones and noncontactly support the work by the pressure of fluid are formed with notches corresponding to the grinding whetstones and extending from the outer edge to the center, and their noncontact support surfaces are provided with a plurality of pockets having fluid supply holes, and a mesh section forming banks around the peripheries of these pockets, the mesh section being composed of a peripheral edge disposed along the outer periphery of the noncontact support surface, and inside veins disposed so as to divide the inside of the peripheral edges and connected to the inside-and-outside connecting sections.

Abstract: Provided is an automotive rear body structure which can effectively increase the torsional and bending rigidity of a rear part of the automotive body. A damper stiffener 21 is attached to an outer wall of each wheel house inner 15a so as to jointly define a closed cross section. A floor cross member 22 is attached to the outer walls of floor frames 14 and a rear floor panel 6 so as to jointly define a closed cross section. Each damper stiffener 21 extends to such an extent that its lower end overlaps with the upper end of the corresponding floor frame 14 and is spot welded to the corresponding wheel house inner 15a along with the floor cross member 22. Thereby, a closed cross section frame 23 having ridge lines 1 and 1? continually extending from the bottom wall of the trunk room 13 to each side wall thereof firmly connects the right and left wheel houses 15 and the rear floor panel 6 to the floor frames 14.

Abstract: A two-sided surface grinding apparatus capable of eliminating undulations of concentric circles produced in the work surfaces by grinding, thereby further improving the degree of flatness of the work surfaces after grinding includes a pair of support pads which hold work outwardly of grinding whetstones and noncontactly support the work by the pressure of fluid are formed with notches corresponding to the grinding whetstones and extending from the outer edge to the center, and their noncontact support surfaces are provided with a plurality of pockets having fluid supply holes, and a mesh section forming banks around the peripheries of these pockets, the mesh section being composed of a peripheral edge disposed along the outer periphery of the noncontact support surface, and inside veins disposed so as to divide the inside of the peripheral edges and connected to the inside-and-outside connecting sections.

Abstract: Provided is an automotive rear body structure which can effectively increase the torsional and bending rigidity of a rear part of the automotive body. A damper stiffener 21 is attached to an outer wall of each wheel house inner 15a so as to jointly define a closed cross section. A floor cross member 22 is attached to the outer walls of floor frames 14 and a rear floor panel 6 so as to jointly define a closed cross section. Each damper stiffener 21 extends to such an extent that its lower end overlaps with the upper end of the corresponding floor frame 14 and is spot welded to the corresponding wheel house inner 15a along with the floor cross member 22. Thereby, a closed cross section frame 23 having ridge lines 1 and 1? continually extending from the bottom wall of the trunk room 13 to each side wall thereof firmly connects the right and left wheel houses 15 and the rear floor panel 6 to the floor frames 14.

Abstract: A double side grinding apparatus comprises a pair of grinding wheels (4), work rotating device (1) and moving device (2).

Abstract: A front side frame is disposed with one end portion in the axial direction butted against the side surface of a front bumper beam. A joint member is provided therebetween. The front bumper beam and the joint member are coupled by screwing nuts provided in the end plate part and coupling bolts. Clips with a nut are spring-engaged to either of coupling pieces of the joint member or the outer wall of the side frame. The front side frame and the joint member are coupled by coupling bolts by screwing.

Abstract: A vehicle cooling structure comprises a bumper louver 8 attached in an opening formed in a front bumper so as to open at a position facing a lower portion of a radiator 5 in such a manner as to avoid a bumper beam, air duct plates 10 formed integrally with the bumper louver 8 in such a manner as to be inclined rearward, and left and right guide plates and a lower guide plate detachably attached to a front bulkhead for aggressively guiding running air introduced from the opening toward the radiator.