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This mechanism is used in devices such as lift tables and scissor lifts.Modern low-profile computer keyboards make an extensive use of it as well, installing each key on a scissor support to ensure their smooth vertical movement, allowing the use of a cheap and reliable rubber dome contact set, instead of expensive and complex array of mechanical switches.
A lift table is a device that employs a scissors mechanism [1] to raise or lower goods and/or persons. Typically lift tables are used to raise large, heavy loads through relatively small distances. Typically lift tables are used to raise large, heavy loads through relatively small distances.
Table E 1027 is an adjustable steel and glass table designed by Irish designer Eileen Gray in 1927. Originally created for her E-1027 house, the table has since become one of Gray's most famous designs. [1] [2] The table's adjustable arm and light weight make it flexible in function. [2]
the foot has to touch the ground for at least half of the cycle for a two/four leg mechanism [1] or respectively, a third of the cycle for a three/six leg mechanism; minimized moving mass; vertical center of mass always inside the base of support [1] the speed of each leg or group of legs should be separately controllable for steering [6]
Typical applications are in fixing a crank to its crankshaft, as in a bicycle, and a piston rod to a crosshead, as in a steam engine. The angle of the wedge determines the position of the parts being held; therefore, on a bicycle, the pedal arms will only be at 180 degrees to each other if the angle of the cotter pin's wedge is the same on both ...
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