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2. Scissors mechanism - Wikipedia

   en.wikipedia.org/wiki/Scissors_mechanism

   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.

3. Lewis (lifting appliance) - Wikipedia

   en.wikipedia.org/wiki/Lewis_(lifting_appliance)

   [4] The external lewis has been modified to handle kerbstones and large slabs of polished stone in contemporary stone yards. A kerb lifter lifting kerb stones in Hainan, China. A manual kerb lifter is a large, adjustable pair of tongs, made with a pair of handles so that two people can manoeuvre heavy blocks of stone into position.

4. Poäng - Wikipedia

   en.wikipedia.org/wiki/Poäng

   The Japanese designer, Noboru Nakamura , created the original "Poem" chair in 1975 in collaboration with product manager Lars Engman, who later headed up the IKEA design team. [ 3 ] [ 4 ] [ 5 ] The design of both the Poem and Poäng chairs resemble that of the " Armchair 406 ," created by the Finnish designer Alvar Aalto in 1939.

5. Four-bar linkage - Wikipedia

   en.wikipedia.org/wiki/Four-bar_linkage

   Planar four-bar linkages are constructed from four links connected in a loop by four one-degree-of-freedom joints.A joint may be either a revolute joint – also known as a pin joint or hinged joint – denoted by R, or a prismatic joint – also known as a sliding pair – denoted by P. [Note 1]

6. Lift table bellows - Wikipedia

   en.wikipedia.org/wiki/Lift_table_bellows

   A lift table bellows (also known as lift table skirting) is a safety device that forms a protective barrier between the lift table operator and the equipment's moving parts. The protective barrier is constructed from a wide range of material with 23oz vinyl being the most common in industrial applications.

7. Hinge - Wikipedia

   en.wikipedia.org/wiki/Hinge

   A barrel hinge consists of a sectional barrel (the knuckle) secured by a pivot. A barrel is simply a hollow cylinder. The vast majority of hinges operate on the barrel principle. [4] Butt hinge / Mortise hinge Any hinge designed to be set into a door frame and/or door is considered a butt hinge or mortise hinge. A hinge can also be made as a ...