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  3. Vacuum pump - Wikipedia

    en.wikipedia.org/wiki/Vacuum_pump

    The Roots blower is one example of a vacuum pump. A vacuum pump is a type of pump device that draws gas particles from a sealed volume in order to leave behind a partial vacuum. The first vacuum pump was invented in 1650 by Otto von Guericke, and was preceded by the suction pump, which dates to antiquity. [1]

  4. Leaf blower - Wikipedia

    en.wikipedia.org/wiki/Leaf_blower

    A leaf blower, commonly known as a blower, is a device that propels air out of a nozzle to move debris such as leaves and grass cuttings. Leaf blowers are powered by electric or gasoline motors . Gasoline models have traditionally been two-stroke engines , but four-stroke engines were recently introduced to partially address air pollution concerns.

  5. Central vacuum cleaner - Wikipedia

    en.wikipedia.org/wiki/Central_vacuum_cleaner

    A central vacuum cleaner (also known as built-in or ducted) is a type of vacuum cleaner appliance installed into a building as a semi-permanent fixture. Central vacuum systems are designed to remove dirt and debris from homes and buildings by sending dirt particles through piping installed inside the walls to a collection container inside a ...

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  7. Vacuum cleaner - Wikipedia

    en.wikipedia.org/wiki/Vacuum_cleaner

    Related to the wet vacuum is the extraction vacuum cleaner used mainly in hot water extraction, a method of cleaning hard-to-move pieces of fabric like carpets. These machines are able to spray hot soapy water and then suck it back out of the fabric, removing dirt in the process.

  8. Valve Amplification Company - Wikipedia

    en.wikipedia.org/wiki/Valve_Amplification_Company

    Valve Amplification Company (VAC) is a U.S. supplier of high end audio electronics, principally utilizing vacuum tube technology. It was founded in 1990 by Kevin Hayes (b. 1959) and Channing W. Hayes (1923–2009).

  9. Portal 2 - Wikipedia

    en.wikipedia.org/wiki/Portal_2

    Portal 2 is a 2011 puzzle-platform game developed by Valve for Windows, macOS, Linux, PlayStation 3, and Xbox 360.The digital PC versions are distributed online by Valve's Steam service, while all retail editions are distributed by Electronic Arts.