US 11,867,326 B2
Profiled leak-before-press sealing ring for a press fitting with arc-shaped first type ring portions alternating with linear-shaped second type ring portions
Andreas Hubertus Hullegien, Vleuten (NL)
Assigned to Aalberts integrated piping systems B.V., Hilversum (NL)
Appl. No. 17/768,887
Filed by Aalberts integrated piping systems B.V., Hilversum (NL)
PCT Filed Oct. 21, 2020, PCT No. PCT/EP2020/079564
§ 371(c)(1), (2) Date Apr. 14, 2022,
PCT Pub. No. WO2021/078769, PCT Pub. Date Apr. 29, 2021.
Claims priority of application No. 2024068 (NL), filed on Oct. 21, 2019.
Prior Publication US 2023/0119522 A1, Apr. 20, 2023
Int. Cl. F16L 13/14 (2006.01)
CPC F16L 13/148 (2013.01) [F16L 13/142 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A profiled leak-before-press sealing ring for leaving free empty leaking spaces between a socket and a pipe end of a press fitting in a non-compressed state, comprising:
a plurality of first type ring portions; and
a plurality of second type ring portions,
wherein the first and second type ring portions lie alternating around a center axis,
wherein the first type ring portions each extend arc-shaped around the center axis, and
wherein the second type ring portions each extend linear-shaped with a straight inner surface and with a straight outer surface in a tangential direction that is perpendicular to a radial direction going through the center axis,
wherein the arc-shaped first type ring portions each have a curved inner surface of a constant radius around the center axis and a curved outer surface of a constant radius around the center axis,
wherein the ring further comprises:
a plurality of third type ring portions,
wherein the third type ring portions extend arc-shaped in between respective ones of the arc-shaped first and linear-shaped second type ring portions,
wherein the arc-shaped third type ring portions each connect with one of its head ends to a head end of a neighbouring one of the arc-shaped first type ring portions, and with an opposing one of its head ends to a head end of a neighbouring one of the linear-shaped second type ring portions, and
wherein the arc-shaped first, the linear-shaped second, and the arc-shaped third type ring portions all have a same evenly large dimensioned cross-sectional shape.