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A Stockbridge damper is a tuned mass damper used to suppress wind-induced vibrations on slender structures such as overhead power lines, [1] long cantilevered signs [2] and cable-stayed bridges. The dumbbell -shaped device consists of two masses at the ends of a short length of cable or flexible rod, which is clamped at its middle to the main ...
A magnetorheological damper or magnetorheological shock absorber is a damper filled with magnetorheological fluid, which is controlled by a magnetic field, usually using an electromagnet. [1][2][3] This allows the damping characteristics of the shock absorber to be continuously controlled by varying the power of the electromagnet.
Friction disk shock absorbers or André Hartford dampers were an early form of shock absorber or damper used for car suspension. They were commonly used in the 1930s but were considered obsolete post-war. [1] Compared to modern shock absorbers friction dampers only provided limited shock absorption but served mainly to damp down oscillation.
A dashpot, also known as a damper[citation needed], is a mechanical device that resists motion via viscous friction. [1] The resulting force is proportional to the velocity, but acts in the opposite direction, [2] slowing the motion and absorbing energy. It is commonly used in conjunction with a spring. The process and instrumentation diagram ...
Particle damping technology is a derivative of impact damping with several advantages. Impact damping refers to only a single (somewhat larger) auxiliary mass in a cavity, whereas particle damping is used to imply multiple auxiliary masses of small size in a cavity. The principle behind particle damping is the removal of vibratory energy ...
An advertisement for Allen safety screws would appear in the 1910 Annual Convention of International Association of Factory Inspectors. [6] In 1922, Allen Manufacturing Company produced sets of tools under the company name "Bay State", suggesting that they may have privately acquired another hardware manufacturer, namely the Bay State Pump Company.
Website. www.dellner.com. Dellner Couplers AB is a Swedish original equipment manufacturer of train connection systems such as couplers, gangway systems and dampers. The headquarter of the company is in Vika in the Falun Municipality. Dellner is owned by the investment organisation EQT AB and has 19 subsidiaries worldwide, with around 1,100 ...
Blast damper. A blast damper is used to protect occupants and equipment of a structure against overpressures resultant of an explosion. The blast dampers normally protect air inlets and exhaust penetrations in an otherwise hardened structure. Blast dampers are related or identical to blast valves, the latter name is generally used to describe ...