US 12,331,760 B2
Hydraulic accumulator
Peter Kloft, Ransbach-Baumbach (DE); Torsten Kusserow, Thörnich (DE); Norbert Lange, Saarbrücken (DE); Norbert Weber, Saarbrücken (DE); and Armin Kort, Riegelsberg (DE)
Assigned to HYDAC TECHNOLOGY GMBH, Sulzbach/Saar (DE)
Appl. No. 18/259,720
Filed by Hydac Technology GmbH, Sulzbach / Saar (DE)
PCT Filed Jan. 4, 2022, PCT No. PCT/EP2022/050078
§ 371(c)(1), (2) Date Jun. 28, 2023,
PCT Pub. No. WO2022/152593, PCT Pub. Date Jul. 21, 2022.
Claims priority of application No. 10 2021 000 139.7 (DE), filed on Jan. 14, 2021.
Prior Publication US 2024/0318669 A1, Sep. 26, 2024
Int. Cl. F15B 1/10 (2006.01); B23K 26/24 (2014.01); F15B 1/12 (2006.01); F15B 1/14 (2006.01)
CPC F15B 1/106 (2013.01) [B23K 26/24 (2013.01); F15B 1/125 (2013.01); F15B 1/14 (2013.01); F15B 2201/205 (2013.01); F15B 2201/3151 (2013.01); F15B 2201/605 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A hydraulic accumulator, having an accumulator housing and a separating element disposed therein, which separates two media spaces from each other, wherein the accumulator housing has at least one fluid port which opens out into an adjacent media space and which has a connection element having an annular outer circumferential surface and a fluid passage bore, which connection element is connected to the accumulator housing via a weld seam, which weld seam forms a transition point between the accumulator housing and the connection element at an end face of the connection element; wherein
the weld seam is formed by a laser or electron beam welding process without any filler materials; wherein
at least a part of wall parts delimiting the transition point are melted to form the weld seam, which closes off the transition point towards surroundings in a manner that is free of protrusions with respect to the outer circumferential surface of the connection element; wherein
the outer circumferential surface of the connection element transitions into a circumferential rim; and wherein
a depression is formed in the end face of the connection element, extending from the circumferential rim to the fluid passage bore.