US 12,331,834 B2
O-ring seal and fluid connection for a fluid transfer circuit comprising such a seal
Jan Olofsson, Varberg (SE); and Cécilia Lofgren, Varberg (SE)
Assigned to AKWEL SWEDEN AB, Varberg (SE)
Appl. No. 18/696,509
Filed by AKWEL SWEDEN AB, Varberg (SE)
PCT Filed Sep. 29, 2022, PCT No. PCT/EP2022/077128
§ 371(c)(1), (2) Date Mar. 28, 2024,
PCT Pub. No. WO2023/052514, PCT Pub. Date Apr. 6, 2023.
Claims priority of application No. FR2110397 (FR), filed on Oct. 1, 2021.
Prior Publication US 2025/0003494 A1, Jan. 2, 2025
Int. Cl. F16J 15/10 (2006.01); F16L 37/12 (2006.01)
CPC F16J 15/104 (2013.01) [F16L 37/1225 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An o-ring seal for a fluid connection with a main insertion axis, of the type comprising an undulating profile following a circumferential path centred on the axis which has a variable axial amplitude relative to a reference transverse plane perpendicular to the main axis between two, lower and upper, transverse planes and designed to define a non-planar geometric profile of the seal, the undulating profile having at least two peak crests and at least two trough crests that are formed by axial excursions relative to the reference transverse plane, wherein at least one peak and one trough are located on the upper and lower planes respectively and at least the other of the peaks and troughs are each located on an intermediate transverse plane plane, the intermediate planes being axially offset from one another and located axially strictly between the two upper and lower planes in such a way that the compression of the seal follows a stepped profile in which the steps are defined by each of the upper, intermediate and lower planes.