An automotive vehicle includes a body having an exterior surface and an aerodynamic member movably coupled to the exterior surface. The aerodynamic member has a first position with respect to the exterior surface and a second position with respect to the exterior surface. The first position presents a distinct aerodynamic profile from the second position. The vehicle additionally includes an actuator coupled to the aerodynamic member and configured to actuate the aerodynamic member between the first position and the second position. The vehicle further includes a damper coupled to the aerodynamic member. The damper is provided with magnetorheological fluid.

An isolator for a stationary vibration isolation system, which is effective in the horizontal and vertical directions, the isolator comprising at least one pneumatic actuator.

A household appliance foot comprises a hydraulic plate; a sheath, fixedly connected with the hydraulic plate; a regulating foot, arranged in the sheath and being axially movable relative to the sheath; an accommodation chamber, formed by the hydraulic plate, the sheath and the regulating foot; a hydraulic medium, in the accommodation chamber and being compressed or expanding with pressure changes to drive the regulating foot to axially move in the sheath for leveling; a communicating device, communicating between at least two household appliance feet for allowing the hydraulic medium to flow between the household appliance feet; and a throttling structure, arranged in the communicating device for slowing down a flow velocity of the hydraulic medium. The throttling structures are arranged in the communicating devices, so that the rapid flowing of the hydraulic medium among the household appliance feet is prevented, and a regulating process can be more stable.

The apparatus for non-contact damping vibration of a vibrating optical fiber moving over an optical fiber path includes an air bearing and an air supply. The air bearing includes a body having an aperture defined by an inner surface and a central axis that passes through the center of the aperture and along which lies the optical fiber path. A plurality of nozzles is distributed around the inner surface and directed toward the central axis. An air conduit within the body is in pneumatic communication with the plurality of nozzles. The air supply is pneumatically connected to the air conduit and is configured to supply pressurized air to the air bearing. The pressurized air is directed through the nozzles to the vibrating optical fiber and impinges on the optical fiber to damp the vibration of the vibrating optical fiber.

A vehicle shock absorbing system includes a wheel, a vehicle body, a first absorber, a dynamic absorber, and a third absorber. The third absorber is attached to the vehicle body. The first absorber is between the third absorber and the wheel. The dynamic absorber is attached to the wheel and includes a dynamic absorber mass and a spring.

An annular air flow passage, particularly for a turbine engine, comprising two radially internal and external annular walls. A measuring element is elongated in a direction between the internal and external annular walls, and a first of the internal or external ends of the element is fixed rigidly to a first of the internal or external walls. The element includes at least one tubular cavity extending along the element and supplied with pressurized fluid.

A pneumatic actuator configured for a stationary vibration isolation system which serves to accommodate equipment for processing semiconductor devices. The pneumatic actuator comprises a working space with a piston which divides the working space into a first and a second pressure chamber, and the piston is spaced apart from an inner surface of the working space by a gap, and the piston is movable only in an axial direction.

The invention relates to a spring-damper element (2) for mounting a punching press (1), with a hydraulic damper unit (3) with a first fluid chamber (4) and a second fluid chamber (5), wherein, in the intended operation, a hydraulic fluid is displaced from the first fluid chamber (4) via a throttle point (6) into the second fluid chamber (5) when the spring-damper element (2) is compressed. The damper unit further comprises an overload valve (7) arranged between the first fluid chamber (4) and the second fluid chamber (5), which overload valve opens when a specific fluid pressure is reached in the first fluid chamber (4) or when a specific pressure difference is reached between the first fluid chamber (4) and the second fluid chamber (5) and releases a bypass (8) via which hydraulic fluid then flows from the first fluid chamber (4) into the second fluid chamber (5) bypassing the throttle point (6). Thereby, the spring-damper element (2) is designed in such a way that the fluid pressure or the pressure difference, respectively, at which the overload valve (7) opens can be adjusted when the spring-damper element (2) is installed as intended. With such spring-damper elements according to the invention, it becomes possible to create a mounting arrangement for a punching press, the damping characteristics of which can be adjusted without significant effort, such that a variable operation of the press in wide ranges becomes possible while keeping the ground loading to a minimum in each case.

A rigid substructure (12) tied to a restrained column (16) at different floors undergoes rigid body rotation due to lateral dynamic loading. Flexural members (18) that are connected to the substructure (12) and another anchor column (14) resist the rigid body rotation and undergo vertical deflections. Damped diagonals (20) connected to common nodes of the rigid substructure and flexural members, for one embodiment, receive amplified displacements and more effectively dissipate energy. Flexural members restore the structure to the unloaded position. The system does not require moment connections and can work with flexure induced in simply supported beams. The system is highly effective and may remain elastic under maximum considered earthquake ground motions.

A hydraulic damper for a mount assembly includes a housing and a subassembly. The housing defines a cavity and is integrally formed to include a plurality of retention features. The subassembly is at least partially disposed in the cavity and is secured relative to the housing by the plurality of retention features. At least one of the plurality of retention features and the subassembly is elastically deformable in a radial direction from an initial diameter to an elastically deformed diameter such that the subassembly is sized to axially pass by the plurality of retention features in the initial diameter for insertion of the subassembly into the housing and the plurality of retention members radially extend over the subassembly in the elastically deformed diameter to secure the subassembly relative to the housing.