Abstract: In a tapered roller bearing, the surface roughness of at least a rolling surface and a large diameter-side end surface of a tapered roller is 0.02 to 0.17 ?m in protruding mountain portion height Rpk, 0.12 to 0.21 ?m in core portion level difference Rk, and 0.07 to 0.43 ?m in protruding valley portion height Rvk and the average recessed portion area in the fine irregularities on the surface of the tapered roller is 5 ?m2 or less. As a result, oil film formability can be improved under dilute lubrication and a decline in lubricating oil viscosity and surface damage at a rolling contact part and an increase in friction at a sliding contact part can be suppressed at the same time.

Abstract: In a tapered roller bearing (10), the surface roughness of at least a rolling surface (13c) and a large diameter-side end surface (13b) of a tapered roller (13) is 0.02 to 0.17 ?m in reduced peak height Rpk, 0.12 to 0.21 ?m in core roughness depth Rk, and 0.07 to 0.43 ?m in reduced valley depth Rvk and the average recessed portion area in the fine irregularities on the surface of the tapered roller (13) is 5 ?m2 or less. As a result, oil film formability can be improved under dilute lubrication and a decline in lubricating oil viscosity and surface damage at a rolling contact part and an increase in friction at a sliding contact part can be suppressed at the same time.

Abstract: A tapered roller bearing includes an inner ring including, on its outer circumferential surface, an inner raceway surface and including, on an end portion on a second axial side, a cone back face rib portion protruding radially outward, an outer ring including, on its inner circumferential surface, an outer raceway surface, a plurality of tapered rollers disposed between the inner ring and the outer ring, and an annular cage that retains the plurality of tapered rollers spaced from each other in a circumferential direction. The cage includes a small-diameter annular portion, a large-diameter annular portion located on the second axial side relative to the tapered rollers and the outer ring, and a plurality of cage bar portions. The large-diameter annular portion has an oil pocket having a first aperture that is open radially inward and a second aperture that is open toward the outer raceway surface.

Abstract: A tapered roller bearing includes an inner ring including, on its outer circumferential surface, an inner raceway surface and including, on an end portion on a second axial side, a cone back face rib portion protruding radially outward, an outer ring including, on its inner circumferential surface, an outer raceway surface, a plurality of tapered rollers disposed between the inner ring and the outer ring, and an annular cage that retains the plurality of tapered rollers spaced from each other in a circumferential direction. The cage includes a small-diameter annular portion, a large-diameter annular portion located on the second axial side relative to the tapered rollers and the outer ring, and a plurality of cage bar portions. The large-diameter annular portion has an oil pocket having a first aperture that is open radially inward and a second aperture that is open toward the outer raceway surface.

Abstract: A storage control device configured to control a storage apparatus including a plurality of storage devices configured to store data redundantly, the storage control device includes a memory and a processor coupled to the memory and configured to receive a read request that requires to read first data stored in the storage apparatus, determine whether, among the plurality of storage devices of the storage apparatus, a first storage device which stores the first data is under execution of garbage collection, and acquire the first data by accessing a second storage device different from the first storage device, among the plurality of storage devices, when the first storage device is under the execution of the garbage collection.

Abstract: A ball bearing includes an outer ring; an inner ring; a plurality of balls; and a cage that has an annular shape. Oil flows into an area between the outer ring and the inner ring from one side in an axial direction and flows out from the other side in the axial direction. The cage includes an annular portion provided on an oil inflow side, and bar portions extending from the annular portion toward an oil outflow side. An outer peripheral end portion of the annular portion is constituted by a corner portion at which an axial outer end face intersects with an outer peripheral surface. An axial position of a tip end of the corner portion is substantially same as an axial position of a side surface of the outer ring.

Abstract: A ball bearing includes an outer ring; an inner ring; a plurality of balls; and a cage that has an annular shape. Oil flows into an area between the outer ring and the inner ring from one side in an axial direction and flows out from the other side in the axial direction. The cage includes an annular portion provided on an oil inflow side, and bar portions extending from the annular portion toward an oil outflow side. An outer peripheral end portion of the annular portion is constituted by a corner portion at which an axial outer end face intersects with an outer peripheral surface. An axial position of a tip end of the corner portion is substantially same as an axial position of a side surface of the outer ring.

Abstract: A tapered roller bearing includes an outer ring, an inner ring, a plurality of tapered rollers interposed between the outer ring and the inner ring, and a cage for the tapered rollers. Ra is smaller than Rb where Ra represents a radius of curvature of a large end face of the tapered roller and Rb represents a radius of curvature of an end face of a large rib portion of the inner ring.

Abstract: In a tapered roller bearing, LWR/DW is in the range of 1.1 to 1.7 where LWR represents a roller effective length of tapered rollers and DW represents a roller mean diameter of tapered rollers. RCO/LRO is 30 to 150, and RCI/LRI is 50 to 260 where RCO represents a crowning radius of an outer ring, LRO represents a raceway length of the outer ring, RCI represents a crowning radius of an inner ring and LRI represents a raceway length of the inner ring. The following expressions are satisfied: 20°???30°, and ??0.87??0.334?BK???0.87??0.167, where ? represents a raceway angle of the outer ring, ? represents a roller angle of the tapered rollers, and BK represents a rib angle of a large rib portion of the inner ring.

Abstract: According to the invention, there is provided a tapered roller bearing in which, where D represents a larger end diameter of the tapered roller and L represents a roller length thereof, the roller length L is 18 mm or smaller, and a ratio of the large end diameter and the roller length of the tapered roller which is expressed by D/L is in the range of 0.55 to 0.9. In addition, respective raceway surfaces of the outer ring and the inner ring and rolling contact surfaces of the tapered rollers are crowned, and a total crowning amount is set to be 50 ?m or larger, an outer ring crowning rate is set to be 40% or larger, and a roller crowning rate is set to be 20% or smaller.

Abstract: A tapered roller bearing according to the invention is such that the surface hardnesses of a raceway surface of an inner ring and rolling contact surfaces of tapered rollers are set to 63 to 69HRC. In addition, respective raceway surfaces of an outer ring and the inner ring and the rolling contact surfaces of the tapered rollers are crowned and are set such that a total crowning amount is 50 ?m or larger, an outer crowning rate is 40% or larger and a roller crowning rate is 20% or smalled.

Abstract: A tapered roller bearing according to the invention is such that the surface hardnesses of a raceway surface of an inner ring and rolling contact surfaces of tapered rollers are set to 63 to 69HRC. In addition, respective raceway surfaces of an outer ring and the inner ring and the rolling contact surfaces of the tapered rollers are crowned and are set such that a total crowning amount is 50 ?m or larger, an outer crowning rate is 40% or larger and a roller crowning rate is 20% or smaller.

Abstract: A tapered roller bearing includes an outer ring, an inner ring, a plurality of tapered rollers interposed between the outer ring and the inner ring, and a cage for the tapered rollers. Ra is smaller than Rb where Ra represents a radius of curvature of a large end face of the tapered roller and Rb represents a radius of curvature of an end face of a large rib portion of the inner ring.

Abstract: According to the invention, there is provided a tapered roller bearing in which, where D represents a larger end diameter of the tapered roller and L represents a roller length thereof, the roller length L is 18 mm or smaller, and a ratio of the large end diameter and the roller length of the tapered roller which is expressed by D/L is in the range of 0.55 to 0.9. In addition, respective raceway surfaces of the outer ring and the inner ring and rolling contact surfaces of the tapered rollers are crowned, and a total crowning amount is set to be 50 ?m or larger, an outer ring crowning rate is set to be 40% or larger, and a roller crowning rate is set to be 20% or smaller.

Abstract: In a tapered roller bearing, LWR/DW is in the range of 1.1 to 1.7 where LWR represents a roller effective length of tapered rollers and DW represents a roller mean diameter of tapered rollers. RCO/LRO is 30 to 150, and RCI/LRI is 50 to 260 where RCO represents a crowning radius of an outer ring, LRO represents a raceway length of the outer ring, RCI represents a crowning radius of an inner ring and LRI represents a raceway length of the inner ring. The following expressions are satisfied: 20°???30°, and ??0.87??0.334?BK???0.87??0.167, where ? represents a raceway angle of the outer ring, ? represents a roller angle of the tapered rollers, and BK represents a rib angle of a large rib portion of the inner ring.

Abstract: Electronic devices are provided with electrically conductive interconnections which are formed on the insulator material. Such electronic devices include, for example, thin film semiconductor devices (TFT), metal-insulator-metallic type non-wiring elements (MIM), solar cells, Large Scale Integration devices (LSI) or printed-wiring boards. At least a part of the electrically conductive interconnections are made of .alpha.-structure tantalum (Ta) which contains hydrogen. The .alpha.-structure tantalum does not have cubical crystals in its crystal system, but rather has body-centered cubes (bcc). The resistivity of the .alpha.-structure tantalum is from about 20 .mu..OMEGA. centimeters to about 60 .mu..OMEGA. centimeters. When hydrogen is included within this .alpha.-structure tantalum film, small amounts of nitrogen may be contained along with the hydrogen in the film.

Abstract: A caulking pin joint for use with a light shielding blade in a shutter or aperture mechanism of a camera. The caulking pin has a disc-shaped head, a circular protrusion depending therefrom, and a hollow-circular segment depending from the circular protrusion. The actuation arm of the shutter or aperture rests on the head, while the light shielding blade rests on the circular protrusion. The hollow circular section is then spread outward so as to rotatably secure the actuator arm to the light shielding blade. The interior surface of the hollow circular section is chamfered such that when it is folded over on top of the light shielding blade, it presents only a small smooth protuberance from the light shielding blade. This allows a second light shielding blade to be positioned close to the first light shielding blade without fear of collisions or interference between the blades. The circular protrusion upon which the light shielding blade rests, may be provided with a surface inclined up to and including 15.

Abstract: A shutter blade device having two arms, plural shutter blades and caulking pins for rotatably mounting the shutter blades to the arms is designed to secure the strength of the shutter blades, thereby enabling high-speed running motion. For this purpose, the shutter blades are formed planar, and the caulking pins are so caulked that the caulked portions protrude to the rear side of the shutter blades. Between the adjacent shutter blades, blades are so formed that the protruding portions of caulking always overlap with the adjacent shutter blade, regardless whether the blades are in the light-shielding position, in the exposure position or in the course of running therebetween.

Abstract: Thin film transistor including polycrystalline silicon or amorphous silicon thin film channel regions having a thickness of less than 2500 .ANG. and active matrix assemblies including thin film transistors provide improved thin-type displays.

Abstract: Thin film transistor including polycrystalline silicon or amorphous silicon thin film channel regions having a thickness of less than 2500 .ANG. and active matrix assemblies including thin film transistors provide improved thin-type displays.