The invention relates to a centrifuge (10), in particular a laboratory centrifuge, having a) a rotor (32) for receiving containers having material for centrifuging, b) a drive shaft (42), on which the rotor (32) is mounted, c) a motor (18), which drives the rotor (32) via the drive shaft (42), d) a bearing unit (44) having bearings (20, 22, 24; 46, 48, 50, 52, 54, 56; 64, 66, 68), which each have damping elements (20a, 22a, 24a; 46a, 48a, 50a; 52a, 54a, 56a, 64a, 66a, 68a) comprising a spring axis (20e, 22e, 24e; 46e, 48e, 50e; 52e, 54e, 56e; 64e, 66e, 68e), and e) a carrier element (16) for fixing the motor (18) via the bearing unit (44) in the centrifuge (10). The invention is characterized in that at least one damping element is formed completely from metal and as a metal cushion (46a, 48a, 50a; 52a, 54a, 56a, 64a, 66a, 68a) comprising a wire knit having elastic properties.

The invention relates to a centrifuge (10), in particular a laboratory centrifuge, having a) a rotor (32) for receiving containers having material for centrifuging, b) a drive shaft (42), on which the rotor (32) is mounted, c) a motor (18), which drives the rotor (32) via the drive shaft (42), d) a bearing unit (44) having bearings (20, 22, 24; 46, 48, 50, 52, 54, 56; 64, 66, 68), which each have damping elements (20a, 22a, 24a; 46a, 48a, 50a; 52a, 54a, 56a, 64a, 66a, 68a) comprising a spring axis (20e, 22e, 24e; 46e, 48e, 50e; 52e, 54e, 56e; 64e, 66e, 68e), and e) a carrier element (16) for fixing the motor (18) via the bearing unit (44) in the centrifuge (10). The invention is characterized in that at least one damping element is formed completely from metal and as a metal cushion (46a, 48a, 50a; 52a, 54a, 56a, 64a, 66a, 68a) comprising a wire knit having elastic properties.

A seal for a gas turbine engine includes a full hoop outer ring, a shoe coupled to the full hoop outer ring via an inner beam and an outer beam, and a wave spring in contact with at least one of the inner beam or the outer beam.

A seal for a gas turbine engine includes a full hoop outer ring, a shoe coupled to the full hoop outer ring via an inner beam and an outer beam, and a wave spring in contact with at least one of the inner beam or the outer beam.

A seismic isolator is provided, which is excellent in vertical shock-absorbing and vibration reducing, has more functions of horizontal shock-absorbing, recovering, and reaction-force resisting, is easy to install while adjusting the horizontal level of supporting structure in the construction site, and is able to adjust the height of the supporting structure even after installed in the construction site. The seismic isolator includes a wedge unit including a rod, a pair of wedges installed movably along the rod, a horizontal elastic body engaging the rod and supporting the pair of wedges and a supporting means supporting the horizontal elastic body, a wedge bottom surface member supporting the pair of wedges while surface-contacting a wedge bottom surface of the wedge surface of the pair of wedges, and a wedge top surface member supported by the pair of wedges while surface-contacting a wedge top surface of the wedge surface of the pair of wedges.

A subsea equipment assembly includes a first component having an axis, a second component, and an anti-vibration bracket. The anti-vibration bracket is attached to the first component and the second component. In use the first component is caused to vibrate at least in a radial direction relative to the axis. The anti-vibration bracket includes a plate portion. The plate portion extends at least radially away from the first component and includes an attachment region located a radial distance away from the first component, the second component is attached to the attachment region. The anti-vibration bracket includes an array of slots, at least some of the slots of the array of slots are located between the first component and the attachment region.

A damper bearing includes: a bearing portion that supports a rotary shaft; and a tubular portion located around an outer circumference of the bearing portion, the tubular portion having a predetermined radial thickness and having an outer surface attachable to a structural member, wherein the bearing portion is configured as a hydrostatic bearing that supports the rotary shaft with a predetermined bearing clearance between the hydrostatic bearing and the rotary shaft, the tubular portion includes a plurality of planar slits located between the outer surface of the tubular portion and an inner surface of the tubular portion, each planar slit having a predetermined width, extending circumferentially, and further extending through an entire axial length of the tubular portion, the planar slits are arranged circumferentially at predetermined intervals in the tubular portion, each planar slit has an open end at the outer surface of the tubular portion, extends radially from the open end, and extends circumferentially in an arc to a predetermined point in a region between the outer surface and the inner surface, and the tubular portion includes a bearing fluid supply hole formed in a region where none of the planar slits is situated, the bearing fluid supply hole extending from the outer surface of the tubular portion to the bearing portion without passing through any of the planar slits. The damper bearing thus configured can be used as a bearing for a small machine and exhibit a damper function to damp vibration transmitted from the rotary shaft of the machine.

A multi-dimensional magnetic negative-stiffness mechanism and a multi-dimensional magnetic negative-stiffness vibration isolation system composed thereof are provided. The multi-dimensional damping system is composed of a positive-stiffness mechanism, a multi-dimensional negative-stiffness mechanism, a floating frame, a vibration isolated body, and a mounting base. The positive-stiffness mechanism is a traditional elastic element connected to the vibration isolated body and the mounting base, and provides supporting forces in an X direction, a Y direction, and a Z direction, and a basic vibration isolation function. The multi-dimensional negative-stiffness mechanism is composed of at least two negative-stiffness magnetic groups. Each negative-stiffness magnetic group may provide one-dimensional or two-dimensional negative stiffness. Through a series connection of the at least two negative-stiffness magnetic groups, a two-dimensional or three-dimensional negative-stiffness effect may be implemented to improve the vibration isolation performance of the system in multiple dimensions.

A damper is disposed in at least one of a space between a supported member and a supporting element or a space between the supported member and a supporting member. The damper includes a cushioning member and a protecting member. The cushioning member is configured to relax stress applied to the supported member that is supported by the supporting member together with the supporting element. The cushioning member includes a facing portion that faces the supported member, an opposite portion that is opposite to the facing portion, and a side surface portion that is located between the facing portion and the opposite portion. The protecting member is disposed on the side surface portion to cover the cushioning member from an outside of the cushioning member.

A six-degree-of-freedom micro vibration suppression platform includes a basic platform, a load platform, six sets of single-degree-of-freedom active and passive composite vibration isolation devices that are exactly the same and a controller. Upper and lower ends of each set of single-degree-of-freedom active and passive composite vibration isolation devices are connected with the load platform and the basic platform, respectively. A control method includes: calculating a logical axis signal, calculating a logical axis control signal, calculating physical axis real-time control signals and a transfer step.