RV waste discharge sewer line two-part adapter assembly with flexible seal and locking mechanism
An adapter assembly for connecting a sewage drain pipe to a sewage disposal site inlet in fluid communication includes a hollow tubular member, a hollow adaptive member and flexible seal. The hollow tubular member having an open inlet adapted to engage threadable or otherwise to the end of a sewage drain pipe. A hollow adapter member having an open discharge end with adaptive features to be inserted into disposal site inlet. The tubular and adapter member interfacing via a rotational positive mechanical lock compressing an annular flexible seal radially or axially to ensure a dependable, long lasting low pressure fluid tight seal.
1. An adapter assembly for coupling a sewage drain pipe to a sewage disposal site inlet for fluid communication therewith, comprising:
a) a hollow L-shaped tubular member, said tubular member capable of connecting to an end of a corrugated sewage drain pipe, a lug member, said lug member positioned on said tubular member; and
b) a hollow adapter member, said adapter member for connection to a sewage disposal site inlet, said adapter member comprising an inlet, said adapter inlet defining an inside diameter surface and an outside diameter surface, said adapter inlet defining an adapter member annular inlet face, said adapter member annular inlet face defining a slot opening, said slot opening having a rectangular shape and extending axially along said inside diameter surface of said adapter inlet, said outside diameter surface of said adapter inlet being continuous, said adapter inlet defining a lug channel along said inside diameter surface, said slot opening in communication with said lug channel, said lug channel comprising a rotary portion, said slot opening for receiving said lug member for rotation in said rotary portion to provide a secure connection for fluid communication between said tubular member and said adapter member.
2. The adapter assembly as recited in claim 1 , wherein:
said tubular member comprises a discharge, a plurality of lug members, said discharge defining an outside diameter surface, said plurality of lug members mounted on said discharge outside diameter surface; and
said adapter member comprises an inlet, said adapter inlet defining an inside diameter surface, said inlet inside diameter surface defining a plurality of lug channels.
3. The adapter assembly as recited in claim 2 further comprising a flange, said flange positioned on said discharge proximate said lug member, an annular flexible seal, said annular flexible seal disposed on said discharge in contact with said flange.
4. The adapter assembly as recited in claim 3 wherein said flexible seal is continuous and is compressed between said tubular member and said adapter member during coupling.
5. The adapter assembly as recited in claim 1 , wherein the ends of said tubular member are perpendicular to one another.
6. The adapter assembly as recited in claim 1 , wherein said tubular member defines a helix shaped thread, said thread for engaging a corrugated sewage drain pipe.
7. The adapter assembly as recited in claim 1 , wherein said lug channel is tapered.
8. The adapter assembly as recited in claim 7 wherein said rectangular slot opening has a depth greater than the short dimension of said lug member and will accommodate the long dimension of said lug member and said rotary portion is sized to accommodate the short dimension of said lug member during coupling and said tapered lug channel will functionally engage said lug member during coupling.
9. The adapter assembly as recited in claim 1 , wherein said lug channel is helix-shaped.
10. The adapter assembly as recited in claim 1 wherein said lug member is rectangularly shaped.