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  2. Molecular drag pump - Wikipedia

    en.wikipedia.org/wiki/Molecular_drag_pump

    The earliest molecular drag pump was created by Wolfgang Gaede, who had the idea of the pump in 1905, and spent several years corresponding with Leybold trying to build a practical device. [5] The first prototype device to meet expectations was completed in 1910, achieving a pressure of less than 10 − 6 {\displaystyle 10^{-6}} mbar . [ 6 ]

  3. Turbomolecular pump - Wikipedia

    en.wikipedia.org/wiki/Turbomolecular_pump

    Most turbomolecular pumps employ multiple stages, each consisting of a quickly rotating rotor blade and stationary stator blade pair. The system is an axial compressor that puts energy into the gas, rather than a turbine, which takes energy out of a moving fluid to create rotary power, thus "turbomolecular pump" is a misnomer.

  4. Drag reducing agent - Wikipedia

    en.wikipedia.org/wiki/Drag_reducing_agent

    The polymers help with drag reduction by decreasing turbulence in the oil lines. This allows for oil to be pumped through at lower pressures, saving energy and money. Although these drag reducing agents are mostly used in oil lines, there is research being done to see how helpful polymers could be in reducing drag in veins and arteries.

  5. Drag link - Wikipedia

    en.wikipedia.org/wiki/Drag_link

    Steering system showing drag link. A drag link converts rotary motion from a crank arm, to a second bellcrank, usually in an automotive steering system.. While the origin of the term is not clear, it pre-dates the automobile, and is described as in use in 1849 as a means of rotating a Ducie cultivator being operated by cable by stationary steam engine (or between engines).

  6. Cope and drag - Wikipedia

    en.wikipedia.org/wiki/Cope_and_drag

    Cope and drag with cores in place on the drag Two sets of castings (bronze and aluminium) from the above sand mold. In foundry work, the terms cope and drag refer respectively to the top and bottom parts of a two-part casting flask, used in sand casting. The flask is a wood or metal frame, which contains the molding sand, providing support to ...

  7. Worthington Corporation - Wikipedia

    en.wikipedia.org/wiki/Worthington_Corporation

    The ISPC merged Blake and Knowles Steam Pump Works, Ltd. (BKSPW), Worthington Pump Works and other companies that together made up a large part of total American capacity for making steam pumps. [12] The company's products were diverse, including the elevators for the Eiffel Tower. [10] Worthington Pump Works was the largest of the merged firms ...

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