US 12,146,593 B2
Grooved pipe coupling with improved sealing
Eyal Artsiely, Moshav Yafit (IL); Yoel Bahalul, M. Kinneret (IL); Meir Ben Harush, Kiryat Shmona (IL); Genia Lubomirski, Carmiel (IL); and Gregori Kreimerman, Rosh Pina (IL)
Assigned to MODGAL METAL (99) LTD., Rosh Pina (IL)
Filed by MODGAL METAL (99) LTD., Rosh Pina (IL)
Filed on Sep. 7, 2023, as Appl. No. 18/243,270.
Application 18/243,270 is a continuation of application No. 16/973,901, granted, now 11,788,654, previously published as PCT/IL2020/050306, filed on Mar. 15, 2020.
Claims priority of provisional application 62/818,217, filed on Mar. 14, 2019.
Prior Publication US 2023/0417348 A1, Dec. 28, 2023
Int. Cl. F16L 23/22 (2006.01); F16L 23/00 (2006.01); F16L 23/08 (2006.01)
CPC F16L 23/22 (2013.01) [F16L 23/003 (2013.01); F16L 23/08 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A pipe coupling assembly for coupling pipe elements in an end-to-end relationship, the pipe coupling assembly comprising:
first and second coupling segments, each coupling segment comprising:
a curved portion having a first end and a second end, and an inner surface extending between the first and second ends, the inner surface defining a channel shaped and sized to receive a portion of an annular seal therein;
a fastening lug member extending radially outward from the second end of the curved portion, the fastening lug members of the first and second coupling segments being configured to be drawn towards each other to close said first and second coupling segments around said pipe elements; and
at least one elevated protrusion protruding from the inner surface of the curved portion and configured to impart a radially inward force on said annular seal,
wherein the curved portion comprises two lateral gaps formed between the outer surface and the seal, the two lateral gaps are not in contact with the at least one elevated protrusion,
wherein the at least one elevated protrusion applies pressure to locally deform the seal into lateral gaps, and
wherein the seal comprises a resilient ring shaped to define an outer annular portion from which radially inwards extend left and right lateral portions, and wherein left and right inner annular portions extend axially inwards from the left and right lateral portions, respectively, and wherein the seal further comprises a plurality of projecting tabs extending from the outer annular portion and positioned in a spaced apart relation to one another around a circumference of the outer annular portion, the plurality of projecting tabs being disposed between the left and right inner annular portions and projecting radially inwardly.