A support ring for a resiliently deformable jounce bumper is made of a cast material. The support ring contains an inner circumferential surface that defines a through-opening extending along a longitudinal axis, an outer circumferential surface, a first axial end face, an opposing second axial end face, and a plurality of recesses configured to reduce the material mass which the support ring is made of. The through-opening is configured to fit around the jounce bumper. The plurality of recesses may be formed in at least one of the two end faces such that the recesses extend from the respective end face in the axial direction into the material of the support ring.

An additive for a damping polymer includes a reaction product of rosins (A) and an oxyalkylene compound (B) capable of reacting with the rosins (A), in which the number of oxyalkylene units per molecule of the reaction product is 2 or more.

An electronic device can include a first electronic component, a second electronic component, and an energy dampener positioned between and in contact with the first electronic component and the second electronic component. The energy dampener in this example includes a carbon nanotube-aerogel matrix including carbon nanotubes embedded in an aerogel with a rubber composited therewith.

An object of the present invention is to provide an SBR composition for a torsional damper in which the SBR composition has a good physical property balance of high load-bearing properties, low CS properties, and the kneadability and roll processability of a rubber material, and to provide a torsional damper. The object is achieved in such a manner that the SBR composition for the torsional damper comprises at least:(a) an SBR polymer having a combined styrene content of 10 wt % to 50 wt %; (b) carbon black comprising FEF grade carbon black and HAF grade carbon black blended at a ratio of FEF:HAF=1:3 to 3:1; (c) a crosslinking system including sulfur, a sulfur-donating compound, and an organic peroxide compound; and (d) a co-crosslinking agent, wherein 60 parts by weight to 100 parts by weight of the carbon black as total parts by weight of the FEF grade carbon black and the HAF grade carbon black is blended based on 100 parts by weight of the SBR polymer, 0.4 part by weight to 2.5 parts by weight of the sulfur is blended based on 100 parts by weight of the SBR polymer, the sulfur-donating compound is blended at 0.625 time to 12.5 times the blending amount of the sulfur, the organic peroxide compound is blended at 1.25 times to 12.5 times the blending amount of the sulfur, and 4 parts by weight to 16 parts by weight of the co-crosslinking agent is blended based on 100 parts by weight of the SBR polymer.

A composite material comprising an elastomer having ceramic platelets dispersed therein, and applications thereof including an armour system. The ceramic platelets each have a first plate surface and a second plate surface, the first and second plate surfaces being separated by a height H. The ceramic platelets each having a maximum diameter D measured in the first and second plate surfaces. The ceramic platelets have a mean height H.sub.m and a mean maximum diameter D.sub.m. The mean height H.sub.m is 0.1 to 1 μm and the ratio D.sub.m:Hm is 20 or more.

An electromagnetic actuator including: an outer housing member wherein outer peripheral edges of lid members are fixed respectively to opposite axial sides of the outer tubular member; an inner axial member elastically-connected to the outer housing member by plate springs at opposite axial sides thereof such that central portions of the plate springs are attached to the inner axial member, while outer peripheral edges of the plate springs are clamped and fixed between the outer tubular member and the respective lid members; a stator and a mover having electromagnetic oscillation force between them securely-assembled to the outer housing member and the inner axial member; and integrally-formed seal rubber and stopper rubber provided at inner faces of the lid members to seal a fixation part to the outer tubular member and to cushion strike of the inner axial member against the lid members, respectively.

A mount device includes an inner rod, a damper made of an elastic material to be mounted to the inner rod, and an outer cover to be mounted to the damper. The damper includes a plurality of projecting portions projecting radially outward from the inner rod and small-thickness portions thinner than the plurality of projecting portions in a radial direction. Spaces are formed radially outward of the small-thickness portions. The outer cover includes a plurality of contact surfaces to respectively come into contact with the plurality of projecting portions. The contact surfaces have a larger curvature than that of a circumscribed circle of the damper.

The present disclosure provides a rotational spring dampener that has a compression limiter, a first disk, and a second disk. The first disk is disposed at a first end of the compression limiter and the second disk is disposed at a second end of the compression limiter, where the second end is opposite the first end. The rotational spring dampener also has a tensile member. The tensile member is connected to the first disk and the second disk. The tensile member is composed of a block copolymer

The present invention relates to a vibration damping device including an outer attachment member (10) connected to one of a vibration generating part and a vibration receiving part, an inner attachment member (20) connected to the other, and an elastic body (30) configured to connect the outer attachment member (10) and the inner attachment member (20), wherein the outer attachment member (10) is formed in a cylindrical shape, the inner attachment member (20) includes a plate-shaped rigid member (21) disposed in the outer attachment member (10) and an interior member (28) located in the outer attachment member (10), fixed to the rigid member (21), and formed of a synthetic resin material, and, at protruding portions (22, 23) of the rigid member (21) which protrude outward from the outer attachment member (10) in an axial direction along a central axis (O) of the outer attachment member (10), mounting holes (22a, 23a) which are open in a diameter direction orthogonal to the axial direction and have a fastening member configured to connect the protruding portions (22, 23) and the other of the vibration generating part and the vibration receiving part fitted thereinto are formed.

A spring element for a vehicle shock absorber. The spring element includes a longitudinal axis and a basic body that extends along the longitudinal axis and is deformable resiliently between an uncompressed basic state and a state compressed in the direction of a longitudinal axis, and which includes an end side with a stop surface configured for contact against a damper cap of the vehicle shock absorber. The stop surface is at least partially structured. A passenger motor vehicle car can include such a spring element.