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2. Self-sealing suction cup - Wikipedia

   en.wikipedia.org/wiki/Self-sealing_suction_cup

   A multi-material 3D printer was used to create the prototype of the self-sealing suction cup in about 20 minutes. [ 5 ] Inside the self-sealing suction cup, the plug is positioned close to the tube opening so that it can get sucked into the tube seal the hole when the central suction line is powered.

3. Suction cup - Wikipedia

   en.wikipedia.org/wiki/Suction_cup

   The working face of the suction cup is made of elastic, flexible material and has a curved surface. [3] When the center of the suction cup is pressed against a flat, non-porous surface, the volume of the space between the suction cup and the flat surface is reduced, which causes the air or water between the cup and the surface to be expelled past the rim of the circular cup.

4. Manhole cover - Wikipedia

   en.wikipedia.org/wiki/Manhole_cover

   Manhole covers may also be made from glass-reinforced plastic or other composite material (especially in Europe, or where cover theft is of concern). Because of law restricting acceptable manual handling weights, Europe has seen a move towards lighter weight composite manhole cover materials, which also have the benefits of greater slip ...

5. Jack (device) - Wikipedia

   en.wikipedia.org/wiki/Jack_(device)

   A demonstration of using two stacked air bags to lift the rear of a car. An inflatable jack, lifting bag, or pneumatic lifting bag is an air bag that is inflated by compressed air (without a hydraulic component) in order to lift objects. The bag can be deflated to be reused later.

6. Saqiyah - Wikipedia

   en.wikipedia.org/wiki/Saqiyah

   A noria in contrast uses the water power obtained from the flow of a river. The noria consists of a large undershot water-wheel whose rim is made up of a series of containers which lift water from the river to an aqueduct at the top of the wheel. [14] [15] Some famous examples are the norias of Hama in Syria or the Albolafia noria in Cordoba ...

7. Siphon - Wikipedia

   en.wikipedia.org/wiki/Siphon

   A fourth problem involves seep holes in the mechanism, intended to slowly refill these various sealing chambers when the siphon is dry. The seep holes can be plugged by debris and corrosion, requiring manual cleaning and intervention. To prevent this, the siphon may be restricted to pure liquid sources, free of solids or precipitate.

8. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

9. Archimedes' screw - Wikipedia

   en.wikipedia.org/wiki/Archimedes'_screw

   The screw pump is the oldest positive displacement pump. [1] The first records of a water screw, or screw pump, date back to Hellenistic Egypt before the 3rd century BC. [1] [3] The Egyptian screw, used to lift water from the Nile, was composed of tubes wound round a cylinder; as the entire unit rotates, water is lifted within the spiral tube to the higher elevation.