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There exists a product by this name , but it's just a compressed air plunging device (and
claims this to be "jet engine technology").
My idea is to put a nozzle and appropriate one-way valves on a normal hand-operated toilet
plunger (either bell or bellows type), to generate a focused jet of
water instead of the typical
wide and slow flow. This could be a whole new plunger, or a retrofit.
Enhancements would be to use a small amount of the plunge energy to swing the nozzle around
in a circle (for broader cutting area), and to use some kind of valve arrangement to pulse the
jet flow (for better directionality and instantaneous power for the same energy input).
A more drastic enhancement would be to add actuators to the nozzle and combine this with my
sonar toilet clog analysis device  (via a cable or wireless link) to aim the jet at specific parts
of the clog for rapid unclogging.
A coincidentally-named product that does not involve jets in any way [notexactly, Apr 15 2016]
 Sonar toilet clog analysis
Sonar toilet clog analysis
[notexactly, Apr 15 2016]
||In Victorian London, plumbers and householders alike
used to buy live eels, caught in the Thames (and sold
mainly for food). Dropped into a blocked pipe, an
eel will unerringly force its way back to the river
and, in so doing, would unblock the pipe.