Coupling ring and method of making same

Details Coupling ring and method of making same Coupling ring and method of making same

1991-10-11

1993-05-25

Arola, Dave W.

Pipe joints or couplings

With assembly means or feature

With holding means functioning only during transportation...

285 61, 285 93, 285331, 285370, 285371, 285404, 285424, 285383, 228 175, 2281736, F16L 5500

Patent

active

052133745

ABSTRACT:
A coupling ring for circular ducts is formed of a single piece of sheet metal and has oppositely extending flanges connected together by an annular channel-shaped rib which cooperatively with the flanges defines oppositely opening grooves containing sealant. The relative dimensions of the grooves is such that a hydraulic lock is avoided at the time the coupling ring is telescoped onto the ducts. Proper sealing can be visually determined by inspection.

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