US 12,460,726 B2
Electrically conductive dynamic sealing element, its manufacturing method and sealing system
Alessandro Zedda, Muttenz (CH)
Assigned to Hutchinson, Paris (FR)
Filed by HUTCHINSON, Paris (FR)
Filed on Dec. 28, 2023, as Appl. No. 18/399,037.
Claims priority of application No. 23305019 (EP), filed on Jan. 6, 2023.
Prior Publication US 2024/0229935 A1, Jul. 11, 2024
Int. Cl. F16J 15/3284 (2016.01); C23C 14/06 (2006.01); C23C 16/26 (2006.01); H01B 1/04 (2006.01); H01B 1/24 (2006.01); H01R 39/64 (2006.01); H01R 41/00 (2006.01)
CPC F16J 15/3284 (2013.01) [C23C 14/0605 (2013.01); C23C 16/26 (2013.01); H01B 1/04 (2013.01); H01B 1/24 (2013.01); H01R 39/64 (2013.01); H01R 41/00 (2013.01); Y10T 428/30 (2015.01)] 20 Claims
OG exemplary drawing
 
1. A dynamic sealing element configured to establish a mobile and electrically conductive contact between a first member and a second member, at least one of which is a mobile member movable in a linear, oscillating and/or rotary motion, the dynamic sealing element comprising:
a sealing body comprising an electrically conductive polymer composite, at least on an outer surface of the sealing body intended to face the at least one mobile member;
an interlayer comprising a first sublayer of titanium directly contacting said outer surface, and a second sublayer directly contacting the first sublayer; and
a coating layer-directly contacting the second sublayer,
wherein the coating layer is made of a coating composition which is based on a titanium-doped diamond-like carbon, and which has a fixed concentration of titanium atoms of between 5% and 50%, inclusively, and
wherein the second sublayer is a gradient layer of titanium-doped diamond-like carbon having a varying concentration of titanium atoms decreasing across a thickness of the second sublayer, which concentration varies from 100% at a first interface with the first sublayer to said fixed concentration at a second interface with the coating layer.