Device for damping vibrations of a vibration surface (21) of the frequency tuned resonance damping kind consisting of one or several elastic damping elements (1-4) and a vibration body (5) supported by the damping elements which together are tuned to damp the vibrations of said surface within a selected frequency range. First mutually co-operating form grip organs give a form grip between said damping elements (1-4) and the vibration surface (21), and second mutually co-operating form grip organs give a form grip between the damping elements and the vibration body. The form grip organs in addition have a recess with gripping surfaces (25-30, 33-35) for transferring vibrations.

A vibrating toothbrush is provided with vibration-isolating zones that substantially isolate vibrations in the head and reduce vibrations transmitted to the handle without sacrificing structural integrity around the vibration-isolation zones. Such zones may generally comprise neck material that is reduced in cross-section, thinned, replaced by dampening material, or removed altogether to create transmission-inhibiting voids. The vibration-isolating zones may be further supported by the housing of the vibratory element to maintain the structural integrity around the zones and to thereby alleviating weakness conditions that might subject the toothbrush to fatigue and breakage conditions.

The disclosure relates to a damping arrangement for vibration damping of an element in an optical system, for example in a microlithographic projection exposure apparatus. A damping arrangement according to the disclosure has an element, a fluid located in a cavity, and at least one channel connected to the cavity. A vibration of the element causes vibration energy of the element to be dissipated by partial displacement of the fluid from the cavity into the at least one channel.

A vibration insulating structure is fixed to a vibration source and on which a measurement apparatus is placed, the vibration insulating structure including: a first vibration insulating structure fixed to the vibration source and a second vibration insulating structure provided on top of the first vibration insulating structure, in which the first vibration insulating structure includes a first mass body and a first vibration insulating member supporting the first mass body, the second vibration insulating structure includes a second mass body and a second vibration insulating member supporting the second mass body, the measurement apparatus is placed on the second mass body, and a second structure ratio of the second vibration insulating structure is larger than a first structure ratio of the first vibration insulating structure.

The disclosure relates to a steel wire and a spring having excellent antibacterial properties and corrosion resistance, and methods of manufacturing the same. The steel wire having excellent antibacterial properties and corrosion resistance includes: a steel wire; and a plating layer formed on the steel wire, wherein the plating layer includes a zinc (Zn)-aluminum (Al) plating layer plated on a surface of the steel wire, and a doping layer formed by doping a surface of the ZnAl plating layer with a metal in a colloidal form. The method of manufacturing the steel wire having excellent antibacterial properties and corrosion resistance includes forming a plating layer on a surface of a steel wire, wherein the forming of the plating layer includes forming a ZnAl plating layer by plating the surface of the steel wire, and forming a doping layer by doping a surface of the ZnAl plating layer with a metal in a colloidal form.

Disclosed herein is a cooling device comprising a cooler body, wherein the cooler body has a first chamber and a second chamber, a cooler body cap disposed to fluidly couple the first chamber and the second chamber, wherein the cooler body cap has a recess that is suitable to receive a base valve, a first hose that is fluidly coupled to the first chamber, a second hose that is fluidly coupled to the second chamber, and an adapter, wherein the adapter is connected to the first hose and the second hose, wherein the adapter has channels to direct fluid flow.