The invention relates to a vibration damper, comprising: a housing, which has a first housing element and a second housing element; a first pin element for connecting to a first plate part; a second pin element for connecting to a second plate part; a first damping insert between the first pin element and the second pin element; a second damping insert between the first pin element and the first housing element; and a third damping insert between the second pin element and the second housing element.

A downhole tool for dampening vibrational, lateral, compressive, and tensile forces exerted on sensor equipment inside a drillstring is described. The downhole tool is housed inside the drill string. The tool generally includes a bottom end shaft for connection to the drillstring and that is telescopically engaged within a compression housing and a torsional housing. The torsional housing enables the bottom end shaft to slide axially with respect to the torsional housing whilst preventing torsional movement of the bottom end shaft relative to the torsional housing. The compression housing is connected to the sensor equipment and operatively contains a first spring between the compression housing and the bottom end shaft that absorbs compression forces between bottom end shaft and compression housing.

Earthquake protection system for a floating slab (1), for the conservation of the structures placed on the slab against the dynamic forces caused by earthquakes, comprising one or more vertical holding devices, arranged on the floating slab (1), and one or more side dampers (20), located on the side walls of the floating slab (1), wherein vertical holding devices are configured for the limitation and damping of the vertical movement of the floating slab and wherein the side dampers (20) are configured to limit and damp the movement of the floating slab (1) in the horizontal direction. The invention also comprises a protection method against earthquakes for protecting that which is arranged on the floating slabs.

A hydraulic mount includes an inner tubular assembly, first and second elastomeric bodies and a fluid-track. The first and second elastomeric bodies are attached to the inner tubular assembly and cooperate to define a first fluid chamber. The second elastomeric body also defines a second fluid chamber that is in fluid communication with the first fluid chamber via the fluid-track. The fluid-track is attached to the inner tubular assembly partially disposed in the first fluid chamber. The fluid-track includes a central portion, a peripheral portion and a passage. The peripheral portion extends radially outwardly from a periphery of the central portion. The passage provides fluid communication between the first and second fluid chambers. Gaps are positioned between the peripheral portion and a wall of one of the first and second elastomeric bodies. The peripheral portion being configured to contact the wall during loading of the inner tubular assembly to restrict movement of the inner tubular assembly and the fluid-track.

The present invention includes a torsion spring including a middle plate having a first attachment point displaced from the geometric center of the middle plate; a first elastomeric element secured to a first side of the middle plate and having an opening coincident with the first attachment point of the middle plate; a second elastomeric element secured to a second side of the middle plate and having an opening coincident with the first attachment point of the middle plate; a first outer plate secured to the first elastomeric element and having an opening coincident with the first attachment point of the middle plate; and a second outer plate secured to the second elastomeric element, having an opening coincident with the attachment point of the middle plate.

A bearing element (1) for mounting a component, especially a cooling module, with an elastomeric element (12), the elastomeric element (12) having an inner connection (6) for connecting to a bearing pin (7) of the component to be mounted, an outer connection (8) for connecting to a bearing frame (10), and at least one support arm (14), which extends between the inner connection (6) and outer connection (8) and elastically connects these together, with a force transfer surface (16) of the outer connection (8) to the bearing frame (10) formed by an outer end face of the support arm (10), and the bearing element (1) formed such that, in the event of an elastic displacement of the inner connection (6) relative to the outer connection (8) in a predetermined, radial displacement direction relative to the bearing element (1) the support arm (14) is stressed predominantly by thrust.

A vibration damper including a frame having at least a first cavity, a frame first end and a frame second end spaced from the frame first end; a shaft slidably coupled to and extending into the frame where the shaft extends through the first cavity; a first vibration isolator disposed within the first cavity where the shaft extends through the first vibration isolator so as to capture the first vibration isolator within the first cavity where the first vibration isolator interfaces with the frame second end; and a second vibration isolator disposed on the shaft, where the shaft extends through the second vibration isolator so as to capture the second vibration isolator on the shaft where the second vibration isolator interfaces with the frame second end opposite the first vibration isolator, where the first vibration isolator and the second vibration isolator act only in compression.

A damper apparatus for use in pneumatic percussion drilling comprises a body having one or more damper apparatus supporting a measuring instrument. Each damper apparatus dampens shock/vibration from the pneumatic percussion drilling that is experienced by the measuring instrument.

An isolator assembly has a housing with a bore. A resilient bushing is positioned within the bore of the housing. The bushing has a lower isolator spring element, a central region and an upper isolator spring element, wherein the central region has a smaller cross sectional area than each of the lower and upper isolator spring elements. The bushing has a bore extending at least partially axially therethrough. The lower and upper isolator spring elements are supported within axially spaced apart portions of the housing. A vertical hanger pin is secured within the bore of the bushing and projects outwardly therefrom to facilitate mounting the isolator assembly to an exhaust system component.

Earthquake protection system for a floating slab (1), for the conservation of the structures placed on the slab against the dynamic forces caused by earthquakes, comprising one or more vertical holding devices, arranged on the floating slab (1), and one or more side dampers (20), located on the side walls of the floating slab (1), wherein vertical holding devices are configured for the limitation and damping of the vertical movement of the floating slab and wherein the side dampers (20) are configured to limit and damp the movement of the floating slab (1) in the horizontal direction. The invention also comprises a protection method against earthquakes for protecting that which is arranged on the floating slabs.