Abstract: A thrust sliding bearing includes: a synthetic resin-made upper casing; a synthetic resin-made lower casing which is superposed on the upper casing so as to be rotatable about an axis O in a circumferential direction R relative to the upper casing; a synthetic resin-made thrust sliding bearing piece disposed in an annular space between the upper casing and the lower casing; and a synthetic resin-made seal member for sealing respective other end portions, communicating with the outside, of a gap on an inner peripheral side and a gap on an outer peripheral side in a radial direction A between the upper casing and the lower casing, the gap and the gap respectively communicating with the annular space at their one annular end portions.

Abstract: A damper 1 includes a vessel 4 for accommodating a viscous fluid 3 in its interior 2; hampering walls 5 and 6 for hampering the flow of the viscous fluid 3; a partitioning member 11 which partitions each of interior portions 7 and 8 into two chambers 9 and 10 and is provided rotatably; a communicating hole 13 formed in the partitioning member 11 so as to allow the two chambers 9 and 10 to communicate with each other via a variable passage 12 whose passage cross-sectional area changes; a flow limiting means 14 for limiting the flow of the viscous fluid 3 in the chamber 9 into the chamber 10 through the communicating hole 13, when the internal pressure of the viscous fluid 3 accommodated in the chamber 9 has exceeded a fixed value on the basis of the rotation of the partitioning member 11; and a resilient means 15 for resiliently urging the partitioning member 11 in an R2 direction with respect to the vessel 4.

Abstract: A cylindrical gasket includes a reinforcing member 70, a heat-resistant material 71, and pores which are dispersedly distributed in the reinforcing member 70 and the heat-resistant material 71, the reinforcing member 70 and the heat-resistant material 71 are intertwined with each other so as to be provided with structural integrity, and with respect to a total volume of the cylindrical gasket, the reinforcing member 70 occupies a volume of 32 to 60%, the heat-resistant material 71 occupies a volume of 5 to 58%, and the pores occupy a volume of 10 to 35%.

Abstract: A damper includes a vessel for accommodating a viscous fluid in its interior; hampering walls for hampering the flow of the viscous fluid; a partitioning member which partitions each of interior portions into two chambers and is provided rotatably; a communicating hole formed in the partitioning member so as to allow the two chambers to communicate with each other via a variable passage whose passage cross-sectional area changes; a flow limiter to limit the flow of the viscous fluid in the chamber into the chamber through the communicating hole, when the internal pressure of the viscous fluid accommodated in the chamber has exceeded a fixed value on the basis of the rotation of the partitioning member; and a resilient structure to resiliently urge the partitioning member in a direction with respect to the vessel.

Abstract: A bush bearing includes a bearing body having an inner peripheral surface which is brought into contact with a cylindrical outer peripheral surface of a rotating shaft portion so as to be rotatable in a first direction, a groove provided on an outer peripheral surface of the bearing body so as to extend in the first direction, and an elastic ring fitted on said groove and having a pair of projecting portions and a portion, the pair of projecting portions partially projecting radially outward from the outer peripheral surface of said bearing body in second direction, the portion being provided at positions in the first direction between the pair of projecting portions, and not projecting radially outward from the outer peripheral surface of the bearing body.

Abstract: The present invention is intended to provide a seismic isolation device which, regardless of a load to be supported, is capable of reducing acceleration through lengthening a natural period of an upper structure, with excellent vibration energy absorbing capacity by obtaining a properly preferable frictional force as well as a returning characteristic, and others.

Abstract: A bush bearing includes a bearing body having an inner peripheral surface which is brought into contact with a cylindrical outer peripheral surface of a rotating shaft portion so as to be rotatable in a first direction, a groove provided on an outer peripheral surface of the bearing body so as to extend in the first direction, and an elastic ring fitted on said groove and having a pair of projecting portions and a portion, the pair of projecting portions partially projecting radially outward from the outer peripheral surface of said bearing body in second direction, the portion being provided at positions in the first direction between the pair of projecting portions, and not projecting radially outward from the outer peripheral surface of the bearing body.

Abstract: A damper is provided which damps an applied external force in accordance with the strength of the external force (impact strength). The damper 10 comprises a vessel 20 having a cylindrical chamber 21 filled with a viscous fluid, a turn member 60 turned by the external force, a slider member 40 which is moved in the chamber 21 of the vessel 20 by turn of the turn member 60, partition member 80 engaged with the slider member 40, a coiled spring 100 for energizing the slider member 40 toward the turn member 60, and a resin cap 100 blocking an opening of the vessel 20.

Abstract: In a synthetic resin-made thrust sliding bearing, a silicone grease whose base oil is a silicone oil, whose coefficient of kinematic viscosity at 25° C. is not less than 100 cSt and not more than 500,000 cSt, and which contains a thickener so as to set its worked penetration to not less than 200 and not more than 400 is interposed at sliding interfaces between, on the one hand, an upper surface of a lower annular flat plate-shaped portion defining a bottom surface of a lower annular recess and a lower surface of an upper annular flat plate-shaped portion and, on the other hand, an upper surface and a lower surface of a thrust bearing piece which are respectively brought into sliding contact with the upper and the lower surface.

Abstract: A thrust sliding bearing 1 includes a synthetic resin-made lower casing 2, a synthetic resin-made upper casing 3 superposed on the lower casing 2, and a synthetic resin-made thrust sliding bearing piece 4 interposed between said upper casing 3 and the lower casing 2.

Abstract: Provided is a damper configured so that a compact pedal unit can be obtained using the damper and so that the damper can be easily retrofitted to a pedal unit. A damper (1) comprises elements such as: a pair of cams (slide cam (4) and stationary cam (5)) which rotate relative to each other about the axis (O1) to cause the sloped cam surfaces (4132, 5211) thereof to make sliding contact with each other; a coiled spring (3) which presses the sloped cam surface (4132) of the slide cam (4) against the sloped cam surface (5211) of the stationary cam (5); a case (2); and a resin roller (8) which is fitted in a rotatable manner on the shaft (7A). The rotational motion of the slide cam (4) about the axis (O1) is restrained by the case (2), and as a result, the slide cam (4) rotates about the axis (O1) relative to the stationary cam (5) in association with the rotation of the case (2) about O1.

Abstract: Including a synthetic resin-made bearing base 2 having a base portion 4, an annular protruding portion 6 provided integrally on and protruding from one surface 5 of the base portion 4, and an air supply passage 11 which is provided in the annular protruding portion 6 and the base portion 4 and which has one end 7 open at a protruding end face 8 of the annular protruding portion 6 and another end 9 open at a outer peripheral surface 10 of the base portion 4; and a synthetic resin-made bearing body 3 having an annular recessed portion 42 which is formed in one surface 41 opposing the one surface 5 of the base portion 4 and which receives the annular protruding portion 6 of the bearing base 2, an annular recessed groove 44 which is open at another surface 43, and a plurality of air outlet holes 47 serving as inherent restrictors each of which communicates with the annular recessed groove 44 at one end 45 and opens to the annular recessed portion 42 at another end 46.

Abstract: A synthetic resin-made thrust sliding bearing 1 includes a synthetic resin-made upper casing 12, a synthetic resin-made lower casing 22, a synthetic resin-made thrust sliding bearing piece 33 interposed between the upper casing 12 and the lower casing 22, an outer elastic seal member 47 having an inner elastically deformable lip portion 43 and an outer elastically deformable lip portion 46, and an inner elastic seal member 54 having an outer elastically deformable lip portion 50 and an inner elastically deformable lip portion 53.

Abstract: A rotational speed reduction device 1 for a truck tailgate includes a housing 5, a rotor 8 disposed inside the housing 5, a viscous fluid 14a accommodated in an inner space 13a, passages 15a and 16a provided in the rotor 8, a one-way valve 19 disposed in the passage 15a, and a one-way valve 20a disposed in the passage 16a.

Abstract: A thrust sliding bearing 1 includes a synthetic resin-made bearing body 16 having a hollow cylindrical portion 4, an annular collar portion 6, an annular protruding portion 8, a tubular projecting portion 13, an engaging projecting portion 14, and an annular projecting portion 15; an annular cover 28 having a disk portion 24, a tubular portion 26, and an engaging projecting portion 27; an annular metal plate 34 having an outer disk portion 32 and an inner disk portion 33; and a thrust sliding bearing means 36 which is interposed between the bearing body 16 and an annular lower surface 35 of the outer disk portion 32 of the annular metal plate 34 and renders the annular metal plate 34 rotatable with respect to the bearing body 16 in an R direction about an axis O of the bearing body 16.

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 thrust sliding bearing 1 includes a synthetic resin-made lower casing 2, a synthetic resin-made upper casing 3 superposed on the lower casing 2, and a synthetic resin-made thrust sliding bearing piece 4 interposed between said upper casing 3 and the lower casing 2.

Abstract: A dynamic vibration absorber (1) includes: a weight (2); a frame body (3) which surrounds the weight (2); a total of four pairs of vertically mounted U-shaped leaf springs (4, 5, 6 and 7) which are interposed between the frame body (3) and the weight (2) so as to hold the weight (2) with respect to the frame body (3) movably with respect to all directions in a horizontal plane and immovably in a vertical direction (V); and a damping mechanism 8 for damping the vibration of the weight (2) in the horizontal plane.

Abstract: A 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 sliding bearing piece 300 interposed between the upper and lower casings 100 and 200, and the thrust sliding bearing piece 300 has inner recessed portions 306 and outer recessed portions 307 which are formed on its upper surface 304 in two rows including an inner row and an outer row and a lubricating oil filled in each of these inner recessed portions 306 and outer recessed portions 307, the inner recessed portions 306 and the outer recessed portions 307 being arranged with a phase difference of an angle ?1=6°.

Abstract: A synthetic resin-made thrust sliding bearing 1 includes a synthetic resin-made upper casing 12, a synthetic resin-made lower casing 22, a synthetic resin-made thrust sliding bearing piece 33 interposed between the upper casing 12 and the lower casing 22, an outer elastic seal member 47 having an inner elastically deformable lip portion 43 and an outer elastically deformable lip portion 46, and an inner elastic seal member 54 having an outer elastically deformable lip portion 50 and an inner elastically deformable lip portion 53.