Abstract: A seismic isolation mechanism includes a seismic isolation apparatus which is installed at one end in a vertical direction on a superstructure and installed at another end 4 in the vertical direction on a floor serving as a foundation or a substructure to isolate the vibration of the superstructure with respect to the floor; a first attenuation damper which is connected to the superstructure and connected at another end a portion of the seismic isolation apparatus to attenuate the vibration of the superstructure with respect to the floor; and a second attenuation damper.

Abstract: A sliding bearing 1 includes: a synthetic resin-made upper casing 2 which is fixed to a vehicle body side via a mounting member; a synthetic resin-made lower casing 3 which is superposed on the upper casing 2 and on which a spring bearing surface for a suspension coil spring is formed; a synthetic resin-made sliding bearing piece 5 disposed in an annular space 4 between the upper casing 2 and the lower casing 3; and an annular inner seal member 8 and an annular outer seal member 9, both made of a synthetic resin, for respectively sealing an annular gap 6 on an inner peripheral side in a radial direction X and an annular gap 7 on an outer peripheral side in the radial direction X between the upper casing 2 and the lower casing 3, the annular gap 6 and the annular gap 7 allowing the annular space 4 to communicate with the outside.

Abstract: In order to improve workability of an operation to adjust the interval between two members, leveling devices (3) support an air rail (2) on base frames (1), and adjust the height of the air rail (2) with respect to the base frames (1). The leveling devices (3) have: disc spring groups (31) which expand and contract in the height direction of the air rail (2) with respect to the base frames (1); a columnar indenter (32), in which a stepped through-hole (324) for inserting a bolt (4) is formed from one end face (321) to the other end face (323), with a first edge part (322) formed outward on the one end face (321) side; a columnar spring guide (33), in which a through-hole (334) for inserting the bolt (4) is formed from one end face (331) to the other end face (333), with a flange part (332) formed outward on the one end face (331) side; and a tubular housing (34) in which a second edge part (342) is formed inward at one opening (341) thereof.

Abstract: A synthetic resin-made sliding bearing 1 includes a synthetic resin-made upper casing 2 which is fixed to a mounting member on a vehicle body side through a mounting member; a synthetic resin-made lower casing 3 which is superposed on the upper casing 2 so as to be rotatable about an axis O in a circumferential direction R relative to the upper casing 2; and a synthetic resin-made sliding bearing piece 5 disposed in a space 4 between the upper casing 2 and the lower casing 3.

Abstract: A spherical annular seal member 35 for use in an exhaust pipe joint has a spherical annular base member 33 which is defined by a cylindrical inner surface 29 forming a through hole 28, a partially convex spherical sliding surface 39, and annular end faces 31 and 32 on large- and small-diameter sides of the partially convex spherical sliding surface 39.

Abstract: A synthetic resin-made sliding bearing 1 includes a synthetic resin-made upper casing 2 which is fixed to a mounting member on a vehicle body side; a reinforced synthetic resin-made lower casing 3 which is superposed on the upper casing 2 so as to be rotatable about an axis O in a circumferential direction R relative to the upper casing 2; a metallic reinforcing member 4; and a synthetic resin-made sliding bearing piece 5 disposed in a space S between the upper casing 2 and the lower casing 3.

Abstract: Provided are: a sliding plate, the thickness and performance of which can be easily adjusted; and a floor plate for a turnout, using the sliding plate. A sliding plate (3) is provided with a backing material (31) comprising a steel plate or the like, a punching metal (32) disposed on the backing material (31), and a sintered meal powder layer (33) formed on the upper surface (310) of the backing material (31) so as to cover the punching metal (32). The sintered metal powder layer (33) is formed by subjecting an alloy powder for sintering to sintering and rolling, and is impregnated with a lubricating resin through heat melting. The sintered metal powder layer (33) formed on a metal area (321) of the punching metal (32) has undergone high-pressure compression and therefore exhibits a high sintered density and excellent resistance to impact, load and wear.

Abstract: A spherical annular seal member 35 for use in an exhaust pipe joint includes: a spherical annular base member 33 defined by a cylindrical inner surface 29, a partially convex spherical surface 30, and large- and small-diameter side annular end faces 31 and 32 of the partially convex spherical surface 30; and an outer layer 34 formed integrally on the partially convex spherical surface 30 of the spherical annular base member 33.

Abstract: A sliding bearing 1 including an upper casing 3 having an annular lower surface 2; a lower casing 5 which is superposed on the upper casing 3 so as to be rotatable about an axis O of the upper casing 3 and has an annular upper surface 4 opposed to the annular lower surface 2 of the upper casing 3; an annular thrust sliding bearing piece 7 disposed in an annular space 6 between the annular lower surface 2 and the annular upper surface 4; a seal 8 disposed on an outer peripheral side of the annular space 6; and a seal 9 disposed on an inner peripheral side of the annular space 6.

Abstract: A rotational damper 10 comprising: a casing 13 provided therein with a partition wall portion 12 provided with a flow path 11; a rotation body 16 rotatably disposed within the casing and provided with a pair of rotary vanes 14, 15 for partitioning the inside of the casing into two chambers R1, R2, in corporation with the casing; a viscous fluid L contained within the casing; lip seals 17 mounted to the pair of rotary vanes in such a manner that, only when the rotation body rotates and moves in one direction, the lip seals 17 expand in the direction perpendicular to the vertical direction to prevent the viscous fluid from flowing between the two chambers; and a lid body 18 for closing the opening of the casing.

Abstract: A synthetic resin-made thrust sliding bearing includes a synthetic resin-made upper casing, a synthetic resin-made lower casing, and a synthetic resin-made thrust sliding bearing piece interposed between the upper casing and the lower casing.

Abstract: A synthetic resin-made thrust sliding bearing 1 includes a synthetic resin-made upper casing 100, a synthetic resin-made lower casing 200, and a synthetic resin-made thrust bearing piece 300 interposed between the upper and lower casings 100 and 200. If it is assumed that the radial length of the thrust bearing piece 300 up to its outer peripheral surface 303 is (r), and the thickness of an upper annular plate portion 102 at its inner peripheral surface is (t), the upper casing 100 has on its upper surface 108 an annular flat surface 109 having a circular outer peripheral edge with R in a range of R=r±t.

Abstract: A spherical annular seal member 40 includes: a spherical annular base member 38 which is defined by a cylindrical inner surface 34 defining a through hole 33 in a central portion, a partially convex spherical surface 35, and annular end faces 36 and 37 on large- and small-diameter sides of the partially convex spherical surface 35; and an outer layer 39 formed integrally on the partially convex spherical surface 35 of the spherical annular base member 38.

Abstract: A rotary damper 1 includes a synthetic resin-made accommodating case 4 for accommodating in its interior 2 a viscous fluid 3 which is constituted by silicone oil or the like and whose viscosity declines with a temperature rise, and a synthetic resin-made rotor 9 which is disposed in the interior 2 of the accommodating case 4 rotatably, i.e., so as to be rotatable in R1 and R2 directions about an axis O, and which partitions the interior 2 of the accommodating case 4 into at least two chambers, i.e., in this embodiment, two chambers consisting of chambers 5 and 6 and two chambers consisting of chambers 7 and 8, in cooperation with the accommodating case 4.

Abstract: A rack guide for a rack and pinion steering device, a rack and pinion steering device and a manufacturing method for a rack guide for a rack and pinion steering device, has a simple configuration with a close contact property being kept between a rack guide and a rack guide base member to ensure quietness. A rack guide for a rack and pinion steering device includes: a casing; a pinion to be slidably supported by said casing; a rack bar having a rack tooth meshed with said pinion; a rack guide including an abutment portion to which said rack bar is to be slidably abutted and a recessed portion, which is continued to said abutment portion, to be spaced from said rack bar; a rack guide base member for receiving said rack guide; and urging means for urging said rack guide against said rack bar through said rack guide base member.

Abstract: A spherical annular seal member 38 is used in an exhaust pipe joint and includes a spherical annular base member 36 defined by a cylindrical inner surface 32, a partially convex spherical surface 33, large- and small-diameter side annular end faces 34 and 35 of the partially convex spherical surface 33, and an outer layer 37 formed integrally on the partially convex spherical surface 33 of the spherical annular base member 36. The spherical annular base member 36 includes a reinforcing member made from a metal wire net 5 and a heat-resistant material containing expanded graphite filling meshes of the metal wire net 5 of this reinforcing member and compressed in such a manner as to be formed integrally with this reinforcing member in mixed form. In the outer layer 37, the reinforcing member, the heat-resistant material, and the solid lubricant are integrated in mixed form.

Abstract: The rotary damper comprises: case having viscous fluid 13 filled cylindrical chamber; rotor housed in the chamber; check valve; and pressure-regulating valve. In the chamber, projecting bulkheads are formed. The rotor comprises: the rotor body and vanes. The check valve closes when the rotor rotates in the normal rotation direction, so as to restrict movement of the viscous fluid between areas 111a-111d partitioned by the bulkheads and the vanes. On the other hand, the check valve opens when the rotor rotates in the reverse rotation direction, so as to allow movement of the viscous fluid between the areas 111a-111d. The pressure-regulating valve opens when rotating force applied for rotating the rotor in the normal rotation direction is above a predetermined value, to cancel the restriction of movement of the viscous fluid between the areas 111a-111d.

Abstract: Provided are a multilayer sliding member capable of being efficiently manufactured at a low cost and having little dimensional change with respect to being used with high loads, and manufacturing technology for same. A binder (5) is applied to a surface (21) of a metal plate (2) that is the backing material. Furthermore, a prepreg (3), formed by drying a woven cloth after the same is impregnated with a phenolic resin, is layered thereupon, and a sliding layer that was forcibly plastically deformed is formed on the surface (21) of the metal plate (2) by thermal curing the layered body while applying pressure with a force greater than the maximum anticipated load during use. A metal powder sintered layer (4) may also be formed on the surface (21) of the metal plate (2). Here, a thermosetting resin (such as a low-viscosity phenolic resin, or an epoxy resin) having a low viscosity and a high affinity with the phenolic resin used in the prepreg (3) is used in the binder (5).

Abstract: A seismic isolation mechanism 1 includes a seismic isolation apparatus 6 which is installed at one end 2 in a vertical direction V on a superstructure 3 and installed at another end 4 in the vertical direction V on a floor 5 serving as a foundation or a substructure to isolate the vibration of the superstructure 3 with respect to the floor 5; an attenuation damper 10 which is connected at one end 7 in the horizontal direction H to the superstructure 3 and connected at another end 8 in the horizontal direction H to a portion 9 of the seismic isolation apparatus 6 between the one end 2 and the other end 4 thereof to attenuate the vibration of the superstructure 3 with respect to the floor 5 as it is extended and contracted in the horizontal direction H; and an attenuation damper 13 which is connected at one end 11 in the horizontal direction H to the floor 5 and connected at another end 12 in the horizontal direction H to the portion 9 of the seismic isolation apparatus 6 to attenuate the vibration of the super

Abstract: A spherical annular seal member 46 includes a spherical annular base member 42 defined by a cylindrical inner surface 38, a partially convex spherical surface 39, and large- and small-diameter side annular end faces 40 and 41 of the partially convex spherical surface 39; a plurality of partially convex spherical intermediate layers 43 formed integrally on the partially convex spherical surface 39 of the spherical annular base member 42 and laminated in a radial direction; and an outer layer 45 formed integrally on a partially convex spherical surface 44 of the outermost partially convex spherical intermediate layer 43 of these partially convex spherical intermediate layers 43.