US 9,809,962 B1
Recreational vehicle holding tank drain clearing assembly
Randy Gehring, Clarkston, WA (US)
Filed by Randy Gehring, Clarkston, WA (US)
Filed on Jul. 25, 2016, as Appl. No. 15/218,253.
Int. Cl. E03D 9/00 (2006.01); E03C 1/304 (2006.01); B60R 15/00 (2006.01); B60P 3/32 (2006.01)
CPC E03C 1/304 (2013.01) [B60P 3/32 (2013.01); B60R 15/00 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A recreational vehicle holding tank unplugging assembly comprising:
a tube having a first end, a second end and a perimeter wall extending between said first and second ends, each of said first and second ends being open;
a first mating member being attached to said first end and being configured to releasably engage a first connecting member of a holding tank drain to fluidly couple a holding tank to said tube;
a second mating member being attached to said second end and being configured to releasably engage a second connecting member of a drainage conduit to fluidly couple said tube to said drainage conduit;
a cap being removably coupled to said second end of said tube;
an air inlet being mounted on said cap, said air inlet being fluidly coupled to said tube when said cap is mounted on said tube;
a closure being mounted on said tube, said closure being positioned in a first position preventing fluid movement through said tube or in a second position allowing fluid movement through said tube; and
wherein air is injected into said tube through said air inlet such that the air removes material in the holding tank drain to increase flow from the holding tank through the holding tank drain.