Abstract: This fuel tank dam closes a gap between a first structural component fixed to the inside surface of the outer plate of a fuel tank and a second structural component provided with a cutout part into which the first structural component is inserted. This fuel tank dam includes: a first portion that can be fixed to the first structural component; a second portion that has a surface extending in a direction intersecting with the first portion and can be fixed to the second structural component; and a third portion that has a bellows and is disposed between the first portion and the second portion. This fuel tank dam is configured such that the first portion, the second portion, and the third portion are integrated, the bellows has a thickness of 0.381 to 1.524 mm, and the second portion has a thickness of 0.762 to 7.620 mm.

Abstract: A fuel tank dam comprises a first section, a second section, a third section, and a flange section. The first section can be fixed to a first structural component, and the second section can be fixed to a second structural component. The third section has a bellows comprising a plurality of folded sections and is disposed between the first section and the second section. The flange section extends along an outer plate at least from an edge section of the third section and can be fixed to the outer plate.

Abstract: This fuel tank dam closes a gap between a first structural component fixed to the inside surface of the outer plate of a fuel tank and a second structural component provided with a cutout part into which the first structural component is inserted. This fuel tank dam includes: a first portion that can be fixed to the first structural component; a second portion that has a surface extending in a direction intersecting with the first portion and can be fixed to the second structural component; and a third portion that has a bellows and is disposed between the first portion and the second portion. This fuel tank dam is configured such that the first portion, the second portion, and the third portion are integrated, the bellows has a thickness of 0.381 to 1.524 mm, and the second portion has a thickness of 0.762 to 7.620 mm.

Abstract: A fuel tank dam comprises a first section, a second section, a third section, and a flange section. The first section can be fixed to a first structural component, and the second section can be fixed to a second structural component. The third section has a bellows comprising a plurality of folded sections and is disposed between the first section and the second section. The flange section extends along an outer plate at least from an edge section of the third section and can be fixed to the outer plate.

Abstract: A vibration characteristic measuring device is provided with a shaker, including a shaking section which reciprocates along an axis, and a mounting block fastened to a mounting surface of the shaking section. A disk drive suspension is mounted on the mounting block. The mounting block has a facing surface which faces the mounting surface of the shaking section. An adhesive member formed of a resin tape is disposed between the mounting surface and the facing surface of the mounting block. The adhesive member is deformable depending on a gap between the mounting surface and the facing surface. The adhesive member closely contacts both the mounting surface and the facing surface without a gap.

Abstract: An apparatus for measuring the vibration characteristics of a head gimbal assembly can grasp resonant characteristics at high frequencies and efficiently measure the vibration characteristics of the head gimbal assembly, the apparatus has a shaker head to which the head gimbal assembly is attached, the shaker head has a main body made of ceramics and a fixture made of metal, the fixture is solidly fixed to the main body and is provided with positioning pins and an internal thread, the head gimbal assembly is supported with a mount block, and the mount block has positioning holes to be fitted to the positioning pins of the fixture and a joined part to be removably fastened to the internal thread of the fixture.

Abstract: An apparatus correctly measures motion characteristics a head gimbal assembly exhibits when turned in a radial direction of a hard disk. The apparatus includes an assembly support to fixedly support the head gimbal assembly on a center axis that corresponds to a rotation axis around which the head gimbal assembly is turned in actual use, a disk drive to rotatably support the hard disk and turn around a turn axis that is concentric with the center axis on which the head gimbal assembly is fixedly supported, and a turn unit to turn the disk drive around the turn axis, thereby creating a relative turn of the head gimbal assembly with respect to the hard disk.

Abstract: A suspension for disc drive has a load beam, a flexure, and a slider. The slider is mounted on a tongue portion of the flexure. When a disc rotates, air flows from an air inflow end (leading side) toward an outflow end (trailing side), whereupon an air bearing is formed between the disc and the slider. A dimple is provided on the distal end portion of the load beam. The slider is supported by the dimple so as to be swingable in a pitch direction and a roll direction. The dimple is formed in a position shifted to the trailing side from the center of the slider. The shorter the length of the load beam, the greater the amount of the shift is.

Abstract: A head suspension for a hard disk drive includes a base to be attached to a carriage of the head disk drive and turned around a spindle. A load beam includes a rigid part and a resilient part separated from the rigid part, to apply load onto a head that is arranged at a front end of the load beam to write and read data to and from a disk arranged in the hard disk drive. A base end of the rigid part is connected to the resilient part that is supported with the base. A flexure has read/write wiring patterns connected to the head, the flexure supporting the head and attached to the load beam. A joint is provided on the rigid part, to be connected to the resilient part. A protrusion formed on each side edge. Reinforcing part each expands and connects between each of the protrusions and the rigid part.

Abstract: An apparatus correctly measures motion characteristics a head gimbal assembly exhibits when turned in a radial direction of a hard disk. The apparatus includes an assembly support to fixedly support the head gimbal assembly on a center axis that corresponds to a rotation axis around which the head gimbal assembly is turned in actual use, a disk drive to rotatably support the hard disk and turn around a turn axis that is concentric with the center axis on which the head gimbal assembly is fixedly supported, and a turn unit to turn the disk drive around the turn axis, thereby creating a relative turn of the head gimbal assembly with respect to the hard disk.

Abstract: A method of manufacturing a head suspension for a hard disk drive includes a rigid part chain product manufacturing step forming a rigid part chain product where rigid parts are provided continuously, a flexure manufacturing step forming the flexure integrated with the resilient part and the reinforcing parts, a base manufacturing step forming the base, a stacking and coupling step stacking and connecting the rigid part chain product, the resilient part chain product, the bases, and the flexures, to form the stacked set, and a cutting step cutting and separating respective head suspensions from a stacked set.

Abstract: A vibration characteristic measuring device is provided with a shaker, including a shaking section which reciprocates along an axis, and a mounting block fastened to a mounting surface of the shaking section. A disk drive suspension is mounted on the mounting block. The mounting block has a facing surface which faces the mounting surface of the shaking section. An adhesive member formed of a resin tape is disposed between the mounting surface and the facing surface of the mounting block. The adhesive member is deformable depending on a gap between the mounting surface and the facing surface. The adhesive member closely contacts both the mounting surface and the facing surface without a gap.

Abstract: A load/unload-type head suspension is capable of suppressing frictional coefficient variations. The head suspension has a head and a tab that is slid and guided along a ramp block in a read/write apparatus, to move the head away from a hard disk to a retract position. The tab is provided with microscopic irregularities to suppress frictional coefficient variations when the tab is guided along the ramp block. A center line average roughness (Ra) of the microscopic irregularities being greater than 0.2 ?m or smaller than 0.6 ?m.

Abstract: An apparatus for measuring the vibration characteristics of a head gimbal assembly can grasp resonant characteristics at high frequencies and efficiently measure the vibration characteristics of the head gimbal assembly, the apparatus has a shaker head to which the head gimbal assembly is attached, the shaker head has a main body made of ceramics and a fixture made of metal, the fixture is solidly fixed to the main body and is provided with positioning pins and an internal thread, the head gimbal assembly is supported with a mount block, and the mount block has positioning holes to be fitted to the positioning pins of the fixture and a joined part to be removably fastened to the internal thread of the fixture.

Abstract: A suspension for disc drive has a load beam, a flexure, and a slider. The slider is mounted on a tongue portion of the flexure. When a disc rotates, air flows from an air inflow end (leading side) toward an outflow end (trailing side), whereupon an air bearing is formed between the disc and the slider. A dimple is provided on the distal end portion of the load beam. The slider is supported by the dimple so as to be swingable in a pitch direction and a roll direction. The dimple is formed in a position shifted to the trailing side from the center of the slider. The shorter the length of the load beam, the greater the amount of the shift is.

Abstract: A method of manufacturing a head suspension for a hard disk drive includes a rigid part chain product manufacturing step forming a rigid part chain product where rigid parts are provided continuously, a flexure manufacturing step forming the flexure integrated with the resilient part and the reinforcing parts, a base manufacturing step forming the base, a stacking and coupling step stacking and connecting the rigid part chain product, the resilient part chain product, the bases, and the flexures, to form the stacked set, and a cutting step cutting and separating respective head suspensions from a stacked set.

Abstract: A head suspension for a hard disk drive includes a base to be attached to a carriage of the head disk drive and turned around a spindle. A load beam includes a rigid part and a resilient part seperated from the rigid part, to apply load onto a head that is arranged at a front end of the load beam to write and read data to and from a disk arranged in the hard disk drive. A base end of the rigid part is connected to the resilient part that is supported with the base. A flexure has read/write wiring patterns connected to the head, the flexure supporting the head and attached to the load beam. A joint is provided on the rigid part, to be connected to the resilient part. A protrusion formed on each side edge. Reinforcing part each expands and connects between each of the protrudions and the rigid part.

Abstract: A load/unload-type head suspension is capable of suppressing frictional coefficient variations. The head suspension has a head and a tab that is slid and guided along a ramp block in a read/write apparatus, to move the head away from a hard disk to a retract position. The tab is provided with microscopic irregularities to suppress frictional coefficient variations when the tab is guided along the ramp block. A center line average roughness (Ra) of the microscopic irregularities is set to be in the range of 2 ?m and 0.6 ?m.