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2. Franklin Electric - Wikipedia

   en.wikipedia.org/wiki/Franklin_Electric

   In 1950, Franklin introduced the first electric motor that was fully submersible. The new pump motors were quiet, resistant to freezing, smaller, easy to install, and had a high pumping capacity. The new motors could recover water from much deeper in the earth, making it possible for the first time to develop areas with low water tables.

3. Submersible pump - Wikipedia

   en.wikipedia.org/wiki/Submersible_pump

   Submersible pump cables are electrical conductors designed for use in wet ground or under water, with types specialized for pump environmental conditions. [5] [6] [7] A submersible pump cable is a specialized product to be used for a submersible pump in a deep well, or in similarly harsh conditions.

4. Pleuger - Wikipedia

   en.wikipedia.org/wiki/Pleuger

   Pleuger Industries was founded in 1929 by Friedrich Wilhelm Pleuger, when he invented glandless motor as a replacement to the borehole shaft and piston pumps. [12] [13] Since water was used to lubricate and cool the bearings of the wet rotor motor, the patent was regarded particularly ecologically benign and effective at the time.

5. Water pumping - Wikipedia

   en.wikipedia.org/wiki/Water_pumping

   Due to the rotation, water is then picked up by the tube and pumped upwards in the hose. The coil pump, as many low lift pumps, is commonly used for irrigation purposes and for drainage of lands. It is currently still used by farmers in Asia. [1] The coil pump was built as an alternative to the Archimedean screw. Unlike the Archimedean screw ...

6. Centrifugal pump - Wikipedia

   en.wikipedia.org/wiki/Centrifugal_pump

   Self-priming pumps have to be capable of evacuating air from the pump suction line without any external auxiliary devices. Centrifugal pumps with an internal suction stage such as water-jet pumps or side-channel pumps are also classified as self-priming pumps. [10] Self-Priming centrifugal pumps were invented in 1935.

7. Ben Franklin (PX-15) - Wikipedia

   en.wikipedia.org/wiki/Ben_Franklin_(PX-15)

   The Ben Franklin mesoscaphe, [1] also known as the Grumman/Piccard PX-15, is a crewed underwater submersible, built in 1968. It was the brainchild of explorer and inventor Jacques Piccard . The research vessel was designed to house a six-man crew for up to 30 days of oceanographic study in the depths of the Gulf Stream .