US 12,214,302 B2
Oil filter cartridge
Wilhelm Ardes, Ascheberg (DE)
Assigned to HENGST SE, Münster (DE)
Filed by Hengst SE, Münster (DE)
Filed on Nov. 6, 2023, as Appl. No. 18/502,769.
Application 18/502,769 is a continuation of application No. PCT/EP2022/061846, filed on May 3, 2022.
Claims priority of application No. 21172803 (EP), filed on May 7, 2021.
Prior Publication US 2024/0075413 A1, Mar. 7, 2024
Int. Cl. B01D 27/08 (2006.01)
CPC B01D 27/08 (2013.01) [B01D 2201/301 (2013.01); B01D 2201/34 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A filter cartridge configured to be removably inserted into a space of a filter housing that has a housing socket and a housing cover with a sealing surface facing inwards, the filter cartridge comprising:
a filter element forming a fluid channel with a longitudinal axis, a front end, and a rear end;
a connector element attached to the front end, wherein the connector element has at least
a forward-facing side facing away from the front end in a forward direction that is parallel to or deviates from the longitudinal axis by an angle that is no larger than 30 degrees, and a rearward-facing side facing towards the filter element in a rearward direction,
a peripheral surface with at least a first ring surface and a second ring surface, wherein the first ring surface is located closer to the rearward-facing side than the second ring surface; and
a first fluid port in fluid communication with a first fluid opening, wherein the first fluid opening is in a radially outward facing surface of the filter cartridge;
a second fluid port in fluid communication with the fluid channel;
wherein the first ring surface and the second ring surface are plain bearing surfaces,
wherein a gasket is movably supported in a first axial position on the first ring surface, thereby enabling a translation of the gasket in a first direction to a second axial position onto the second ring surface, and
wherein:
(i) a radius of the first ring surface is smaller than a radius of the second ring surface, and/or
(ii) the gasket has a first portion with a first connector facing surface defining a first inner radius and a second portion with a second connector facing surface defining a second inner radius, wherein, if the gasket is in the first axial position,
the first connector facing surface is located on the first ring surface and is closer to the second ring surface than to the second connector facing surface, and
the first inner radius is greater than the second inner radius,
and wherein the second inner radius of the second portion increases if the gasket is axially shifted from the first axial position into the second axial position.