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  2. Defy Appliances - Wikipedia

    en.wikipedia.org/wiki/Defy_Appliances

    Defy Appliances is a South African manufacturing company and is the largest manufacturer and distributor of major domestic appliances in Southern Africa. [1] The company manufactures and develops a range of large appliances from gas stoves , refrigerators , washing machines and tumble dryers to continuous clean ovens and convection ovens .

  3. The Hoover Company - Wikipedia

    en.wikipedia.org/wiki/The_Hoover_Company

    The first upright vacuum cleaner was invented in June 1908 in North Canton, Ohio, by department store janitor and occasional inventor James Murray Spangler.Spangler was an asthmatic, and suspecting the carpet sweeper he was using at work was the cause of his ailment, he created a basic suction-sweeper by mounting an electric fan motor on a carpet sweeper and then adding a soap box and a broom ...

  4. Ultrasonic cleaning - Wikipedia

    en.wikipedia.org/wiki/Ultrasonic_cleaning

    Ultrasonic cleaning is a process that uses ultrasound (usually from 20 to 40 kHz) to agitate a fluid, with a cleaning effect. Ultrasonic cleaners come in a variety of sizes, from small desktop units with an internal volume of less than 0.5 litres (0.13 US gal), to large industrial units with volumes approaching 1,000 litres (260 US gal).

  5. Bathtub curve - Wikipedia

    en.wikipedia.org/wiki/Bathtub_curve

    The 'bathtub curve' hazard function (blue, upper solid line) is a combination of a decreasing hazard of early failure (red dotted line) and an increasing hazard of wear-out failure (yellow dotted line), plus some constant hazard of random failure (green, lower solid line).

  6. Manual vacuum cleaner - Wikipedia

    en.wikipedia.org/wiki/Manual_vacuum_cleaner

    The manual vacuum cleaner was a type of non-electric vacuum cleaner, using suction to remove dirt from carpets, being powered by human muscle, similar in use to a manual lawn mower. Its invention is dated to the second half of the 19th century, when patents were granted to inventors in the United States, Britain, France, and elsewhere.

  7. Vim (cleaning product) - Wikipedia

    en.wikipedia.org/wiki/Vim_(cleaning_product)

    Can of VIM scouring powder from Norway. (2010) Vim is the name of a range of household cleaning products originally produced by Lever Brothers (later Unilever). [1] The Vim brand is currently owned by the German multinational company Henkel, while Unilever retains ownership in Canada and Vietnam.

  8. Defy Media - Wikipedia

    en.wikipedia.org/wiki/Defy_Media

    Defy Media was an American digital media company that produced original online content for the 12–34 age group. Originally founded in 1996 as Alloy Online (later Alloy Digital ), the final company was formed in 2013 by its merger with Break Media .

  9. Cyclonic separation - Wikipedia

    en.wikipedia.org/wiki/Cyclonic_separation

    A high-speed rotating (air)flow is established within a cylindrical or conical container called a cyclone. Air flows in a helical pattern, beginning at the top (wide end) of the cyclone and ending at the bottom (narrow) end before exiting the cyclone in a straight stream through the center of the cyclone and out the top.