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2. The best comfy air mattresses of 2024 - AOL

   www.aol.com/news/best-comfy-air-mattresses-2024...

   OhGeni Air Mattress $ at Amazon. This mattress, which has a 4.4-star average rating from over 1,230 reviews on Amazon, has internal coils for support and is made from thick PVC for durability.

3. Air mattress - Wikipedia

   en.wikipedia.org/wiki/Air_mattress

   An air mattress as might be used for temporary guest accommodation. An air mattress is an inflatable mattress or sleeping pad.. Due to its buoyancy, it is also often used as a water toy or flotation device, and in some countries, including the UK and South Africa, is called a lilo ("Li-lo" being a specific trademark — derived from the phrase "lie low") or a Readybed.

4. Hand pump - Wikipedia

   en.wikipedia.org/wiki/Hand_pump

   Hand-powered force pump, with an air chamber to smooth out variations in flow rate. Hand pumps are manually operated pumps; they use human power and mechanical advantage to move fluids or air from one place to another. They are widely used in every country in the world for a variety of industrial, marine, irrigation and leisure activities.

5. Air pump - Wikipedia

   en.wikipedia.org/wiki/Air_pump

   Boyle's air pump. An air pump is a pump for pushing air. Examples include a bicycle pump, pumps that are used to aerate an aquarium or a pond via an airstone; a gas compressor used to power a pneumatic tool, air horn or pipe organ; a bellows used to encourage a fire; a vacuum cleaner and a vacuum pump. All air pumps contain a part that moves ...

6. 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.