A torsional vibration damper and a damping device having a torsional vibration damper includes at least one input part, an energy storage element and output part. The output part has a driver element and an output flange having at least one first flange portion extending in the circumferential direction and a second flange portion adjoining the first flange portion in the circumferential direction and extending in the circumferential direction. The output flange has a fastening end face extending over the first flange portion and the second flange portion. The driver part has a first connection portion extending in the radial direction and a bearing surface arranged on the end-face side. The first connection portion bears on the fastening end face. The output flange in the first flange portion has at least one fastening receiver. The fastening end face of the first flange portion is designed to bear on a bearing surface of a pendulum flange of a centrifugal force pendulum and the first fastening receiver is designed to receive a first fastener for fastening the pendulum flange in a rotationally fixed manner.

A pressure balanced valve with integral pressure relief function is disclosed. The pressure relief valve includes a cap with an opening therein, a plunger configured to fill the opening in the cap, and a spring configured to hold the plunger against the cap. The pressure relief valve providing a fluid pathway through a piston, wherein the fluid pathway extends between a first fluid chamber and a second fluid chamber and provides a bypass for fluid to flow from the second fluid chamber to the first fluid chamber when a pressure of a fluid in the second fluid chamber is above a blow-off pressure of the pressure relief valve.

A 3D variable damping vibration isolator based on rubber friction and extrusion mechanism is composed of a base, an upper plate, a vibration isolation spring, shaped bolts, lock nuts, damped rubber blocks and a shell. The damped rubber blocks are vulcanized and bonded to the external vertical surfaces of vertical steel angles uniformly distributed on the base and are opposite to each other in pairs; the upper end of each shaped bolt is fixed to the upper plate by upper and lower (two) lock nuts, and cross bars at the lower end are squeezed by the damped rubber blocks on both sides; contact surfaces of the damped rubber blocks and the shaped bolts are flat-a design of variable cross-section. The vibration isolation spring is sheathed between the base and a lug boss in the center of the upper plate.

A plate portion of a switching membrane is sandwiched between a first partition plate and a second partition plate. A pair of tubular valve portions protrude from an entire circumference of a circumferential edge portion of the plate portion toward both sides in a plate thickness direction of the plate portion. An inclined surface inclined toward a side away from an opposing wall surface in a radial direction while extending toward a center in the plate thickness direction of the plate portion is formed in a circumferential surface of the switching membrane at a position including the circumferential edge portion of the plate portion.

In a fluid-filled vibration damping device in which a pressure receiving chamber and an equilibrium chamber including a flexible film in a wall are communicated by a fluid passage, a bottomed tubular mounting bracket covering the flexible film includes a notch window that partially opens in a circumferential direction at an outer peripheral corner. The notch window includes an outward punched window formed by punching from the inside toward the outside in an oblique direction in a region extending across a bottom wall and a peripheral wall of the mounting bracket. A mounting plate of a bracket leg fixed to the mounting bracket enters from the outside to the inside of the mounting bracket through the outward punched window, and an outer fixing bolt for fixing to a vibration damping target member is mounted on the mounting plate and located within the outward punched window.

Proposed is a vibration reduction device, installed in a nuclear power plant cabinet where electronic devices are provided and configured to reduce vibrations of the nuclear power plant cabinet, wherein the vibration reduction device includes a casing body provided on one side of the nuclear power plant cabinet and having an accommodation space provided therein, a plurality of springs, which is housed within the casing body and one end of each of which is coupled to the casing body, and a mass body fastened to an opposite end of each of the springs.

An aerodynamic bearing for mounting a shaft for a turbo compressor having two annular axial bearing disks and a hollow cylindrical radial bearing bush. The two axial bearing disks are spaced apart and form a cavity between them for receiving a shaft sleeve connected to the shaft, and the two axial bearing disks each have an axial bearing surface facing the cavity for forming an axial gas cushion in an axial bearing gap between the axial bearing surface and the shaft sleeve. The radial bearing bush has a radial bearing surface radially inward for forming a radial gas cushion in a radial bearing gap between the radial bearing surface and the shaft for the radial mounting of the shaft, and the radial bearing bush is formed integrally and/or materially with one of the axial bearing disks as a combination bearing bush.

A liquid sealed mount is to be disposed between a vibration source and a support of the vibration source. The liquid sealed mount includes an elastic portion configured to absorb a vibration from the vibration source, a first liquid chamber and a second liquid chamber from/to which a hydraulic liquid sealed in the elastic portion is to move in response to an expansion and contraction operation of the elastic portion, and a damping passage through which the hydraulic liquid is to move. The damping passage allows the first and second liquid chambers to communicate with each other. A partition member and a valve body are provided in the damping passage. The partition member separates a first passage and a second passage adjacent to each other. The valve body is configured to block the second passage in an openable and closeable manner by using a pressure from the hydraulic liquid.

An apparatus for rotation rate damping of a suspended platform, the apparatus including a plurality of vertically-extended partially-filled fluid reservoirs, each of the reservoirs being open at a top and offset from a center of gravity of the suspended platform, the reservoirs being connected by tubing permitting fluid to flow between reservoirs in response to gravitational accelerations; wherein motion of the fluid in the tubing creates damping of the rotational motion of the platform.

The present invention aims to provide a resin composition for damping materials which has excellent low-temperature drying properties and excellent coating stability. The present invention relates to a resin composition for damping materials, the composition containing polymer emulsion particles and having multiple peaks in a particle size distribution measured using a particle size distribution analyzer by dynamic light scattering.