Static bilge pump
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United States of America Patent
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Jun 16, 2020
Grant Date -
Jan 25, 2018
app pub date -
Aug 30, 2017
filing date -
Jun 26, 2013
priority date (Note) -
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Abstract
A static bilge pump has a body surrounded by a shell, forming a motive plenum therebetween. Inlets in the front of the shell allow a motive fluid to enter the motive plenum. The motive plenum tapers, decreasing in cross-sectional area along with width as it moves toward its aft, and ends at a motive nozzle. The body houses a suction chamber in fluid communication with a suction inlet that is in fluid communication with the bilge of a boat. Ejectors are positioned proximal to and between the motive nozzle and the discharge outlet. When the static bilge pump is exposed to fluid flow from its front to its stern, such as when a boat is in motion, water enters the motive inlets, filling the motive Plenum and acting as a motive fluid. The motive fluid is ejected at high pressure from the motive nozzle, creating suction at the ejectors and discharging the motive fluid as well as liquid with in the suction chamber out the discharge outlet.
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