Pipe joints or couplings – With fluid pressure seal – Flexible lip
Patent
1978-05-24
1979-11-20
Stein, Mervin
Pipe joints or couplings
With fluid pressure seal
Flexible lip
277207A, 285345, 285379, 285DIG22, F16J 1510, F16L 1702, F16L 1706
Patent
active
041748590
ABSTRACT:
A conduit coupling assembly having a hub, elastomeric seal, and retainer ring for fastening and sealing a conduit which is inserted into the coupling assembly. The retainer ring has a contoured portion that aligns the conduit prior to its engagement with the seal. The seal has plural exterior, peripheral ribs that are compressed against the hub interior when the conduit is inserted. The compressed, peripheral, exterior ribs prevent leakage between the seal and the hub. The seal has an interior truncated, conical sleeve portion that stretches around the conduit as it moves into the coupling assembly creating an interference fit. The conical sleeve portion yields as the conduit first enters the coupling assembly to provide easy initial insertion. Interior peripheral ribs are formed on the seal which are compressed by the conical sleeve portion. Inserting of the conduit into the coupling causes radial outward movement by the conical sleeve. The interior compression ribs restrict the radial outward movement of the sleeve. The interior ribs are compressed, and they react against the sleeve to cause a seal between the sleeve and inserted conduit. The compressed ribs also react to cause compression of the exterior ribs against the hub.
REFERENCES:
patent: 1683076 (1928-09-01), Johnson et al.
patent: 1757724 (1930-05-01), Larson
patent: 3315970 (1967-04-01), Holloway
patent: 3409227 (1968-11-01), Smith
patent: 3501172 (1970-03-01), Pickard
patent: 3544119 (1970-12-01), Glover
patent: 3857589 (1974-12-01), Oostenbrink
patent: 3937497 (1976-02-01), Studer
patent: 4047739 (1977-09-01), Aitken
Pietruszka Carl F.
Stein Mervin
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