Pipe joints or couplings – Elbow
Patent
1976-12-06
1978-09-12
Schroeder, Werner H.
Pipe joints or couplings
Elbow
285276, 285281, F16L 2708
Patent
active
041132882
ABSTRACT:
A system is disclosed for dispensing fuel, e.g. gasoline, from a reservoir tank into a consumption tank as in an automobile. The system incorporates two fluid flow channels, first a channel for liquid fuel and second a return line for fluid vapors. The channels include flexible hoses extending from a pump to a dispensing nozzle with rotatable or swiveled couplings. The couplings include two mating members affixed together to provide a fluid seal and relative rotation to accommodate swivel movement. One coupling member includes a fastening section which may be threaded to affix the coupling to a rigid structure, e.g. pump or nozzle. Also, the one member includes a somewhat cylindrical section defining an external, concentric groove for receiving a ring of nylon-like material. The cylindrical section of the one member is telescopically received within the other member which defines an internal groove for locking engagement with the nylon-like ring. The second member further includes a plurality of O-rings to accomplish a fluid seal with the cylindrical section. A fastener structure is also incorporated in a second member for locking it to a flexible hose. The coupling member provides a uniform internal diameter to avoid any obstructions to fluid flow while accommodating swivel motion.
REFERENCES:
patent: 1538007 (1925-05-01), Schellin
patent: 2338716 (1944-01-01), Hardwick
Berman Conrad L.
Coxwells, Incorporated
Schroeder Werner H.
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