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  2. Air mattress - Wikipedia

    en.wikipedia.org/wiki/Air_mattress

    An air mattress as might be used for temporary guest accommodation. An air mattress is an inflatable mattress or sleeping pad.. Due to its buoyancy, it is also often used as a water toy or flotation device, and in some countries, including the UK and South Africa, is called a lilo ("Li-lo" being a specific trademark — derived from the phrase "lie low") or a Readybed.

  3. Limit switch - Wikipedia

    en.wikipedia.org/wiki/Limit_switch

    In electrical engineering, a limit switch is a switch operated by the motion of a machine part or the presence of an object. A limit switch can be used for controlling machinery as part of a control system , as a safety interlock , or as a counter enumerating objects passing a point.

  4. Sleep Number - Wikipedia

    en.wikipedia.org/wiki/Sleep_Number

    The company manufactures the Sleep Number® bed, an adjustable air mattress.The "Sleep Number® setting" is a setting that adjusts the firmness or softness of the mattress on each side of the bed using air pressure (dual air chambers, one on each side), with higher numbers (up to 100) denoting higher pressure and more firmness, and lower numbers denoting less pressure and more softness.

  5. Mercury switch - Wikipedia

    en.wikipedia.org/wiki/Mercury_switch

    A Single-Pole, Single-Throw (SPST) mercury switch on millimetre graph paper, device length approximately 1.5 cm Another mercury switch design. A mercury switch is an electrical switch that opens and closes a circuit when a small amount of the liquid metal mercury connects metal electrodes to close the circuit. There are several different basic ...

  6. Bestway - Wikipedia

    en.wikipedia.org/wiki/Bestway

    Bestway Group Limited is a British conglomerate founded by Sir Anwar Pervez in 1976. The group operates in the United Kingdom and Pakistan , and is currently based in London . The group originally began as Bestway Wholesale .

  7. Spring Air Company - Wikipedia

    en.wikipedia.org/wiki/Spring_Air_Company

    Spring Air Company is a mattress company based in the United States.It was founded in Chicago in 1926 when Francis Karr patented a mattress design with free-end coils. Because of the heavy weight, high transportation costs, and low value per unit weight of mattresses, they are often manufactured lo

  8. Simmons Bedding Company - Wikipedia

    en.wikipedia.org/wiki/Simmons_Bedding_Company

    The pocketed coil is the basis for the Simmons Beautyrest mattress brand, which was introduced in 1925. [6] Although the new manufacturing technology greatly reduced its cost, at the time of its introduction a Beautyrest mattress sold for $39.50, three to four times more than the typical price for a standard wire mattress. [7]

  9. Maximum landing weight - Wikipedia

    en.wikipedia.org/wiki/Maximum_landing_weight

    The maximum landing weight (MLW), also known as the maximum structural landing weight or maximum structural landing mass, [1] is the maximum aircraft gross weight due to design or operational limitations at which an aircraft is permitted to land. The MLW is set in order to ensure safe landings; if an aircraft weighs too heavy during touchdown ...