US 11,719,369 B2
Line element with friction-reducing layer
Dietmar Baumhoff, Olpe (DE); Michael Henkelmann, Hilchenbach (DE); Oliver David Selter, Attendorn (DE); Andreas Gerhard, Wenden (DE); Stefan Hauk, Hilchenbach (DE); Karl-Heinz Münker, Hilchenbach (DE); Karsten Schenk, Schwalmstadt (DE); David Christopher Siebels, Dortmund (DE); Matthias Weiss, Hilchenbach (DE); and Sascha Jan Sckudlarek, Freudenberg (DE)
Assigned to WESTFALIA METAL HOSES GMBH, Hilchenbach (DE)
Appl. No. 16/964,116
Filed by Westfalia Metal Hoses GmbH, Hilchenbach (DE)
PCT Filed Jan. 29, 2019, PCT No. PCT/EP2019/052035
§ 371(c)(1), (2) Date Jul. 22, 2020,
PCT Pub. No. WO2019/149665, PCT Pub. Date Aug. 8, 2019.
Claims priority of application No. 10 2018 102 078.3 (DE), filed on Jan. 30, 2018.
Prior Publication US 2021/0033230 A1, Feb. 4, 2021
Int. Cl. F16L 27/10 (2006.01); F01N 13/18 (2010.01); F16L 11/16 (2006.01); F16L 27/11 (2006.01); F16L 51/02 (2006.01)
CPC F16L 27/1004 (2013.01) [F01N 13/1816 (2013.01); F16L 11/16 (2013.01); F16L 27/11 (2013.01); F16L 51/025 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A line element for an exhaust pipe, comprising:
an inner element;
an outer element in surrounding relation to the inner element such as to contact the inner element in a contact zone; and
a sliding layer containing a temperature-resistant anti-friction lacquer and arranged in the contact zone on a member selected from the group consisting of the inner element and the outer element,
wherein the sliding layer contains or is made of at least one material selected from the group consisting of PTFE; titanium dioxide (TiO2), zinc sulfide, (metal) phosphate, aluminum, aluminum oxide, boron nitride, silanes, silicon, silicon dioxide, tungsten disulfide (WS2), polymer composites, polyamide resins (PAI resin), epoxy resin (PEEK), polyvinyl butyral resin, and polyolefins, and
wherein the sliding layer additionally contains at least one material selected from the group consisting of molybdenum disulfide (MoS2), chromium nitride (CrN), graphite, aramid fibers, glass fibers, glass beads, carbon fibers, and glass balls.