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  2. Sprengel pump - Wikipedia

    en.wikipedia.org/wiki/Sprengel_pump

    A pump of this type is capable of producing high vacuum in which the pressure is 1 mPa. [1] The Sprengel pump is a vacuum pump that uses drops of mercury falling through a small-bore capillary tube to trap air from the system to be evacuated. [Note 1] It was invented by Hanover-born chemist Hermann Sprengel in 1865 while he was working in ...

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  4. Black & Decker DustBuster - Wikipedia

    en.wikipedia.org/wiki/Black_&_Decker_DustBuster

    Spillbuster 2000 from 1998. The Black & Decker DustBuster (now stylized as DUSTBUSTER) is a cordless vacuum cleaner that was introduced in January 1979.. Mark Proett and Carroll Gantz are listed as the inventors on the utility and design patents, respectively, assigned to Black & Decker for a cordless vacuum cleaner.

  5. Roughing pump - Wikipedia

    en.wikipedia.org/wiki/Roughing_pump

    The term "roughing pump" derives from the vacuum range it works in, "rough vacuum", above 1x10 −3 torr (0.1 Pa). Pumps that operate in the high vacuum ranges typically don't operate, or only operate inefficiently, at atmospheric pressures , whereas pumps that work efficiently at atmospheric pressure usually cannot produce a vacuum lower than ...

  6. 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]

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