US 12,263,424 B2
Filter device together with filter element
Volkmar Klein, Zweibrücken (DE); Michael Sakraschinsky, St. Ingbert (DE); and Stefan Hennes, Neunkirchen (DE)
Assigned to HYDAC FILTERTECHNIK GMBH, Sulzbach/Saar (DE)
Appl. No. 17/642,303
Filed by HYDAC FILTERTECHNIK GMBH, Sulzbach/Saar (DE)
PCT Filed Jan. 13, 2021, PCT No. PCT/EP2021/050562
§ 371(c)(1), (2) Date Mar. 11, 2022,
PCT Pub. No. WO2021/156030, PCT Pub. Date Aug. 12, 2021.
Claims priority of application No. 10 2020 000 738.4 (DE), filed on Feb. 3, 2020.
Prior Publication US 2022/0339566 A1, Oct. 27, 2022
Int. Cl. B01D 35/30 (2006.01); B01D 29/23 (2006.01)
CPC B01D 35/30 (2013.01) [B01D 29/23 (2013.01); B01D 2201/295 (2013.01); B01D 2201/304 (2013.01); B01D 2201/347 (2013.01); B01D 2201/4092 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A filter device for the filtration of fluids, comprising:
a filter housing;
a cover closing an open end of the filter housing;
a filter element accommodated in a replaceable manner in the filter housing;
at least one functional element on each of the cover, filter housing and the filter element in such a way that the filtration of the fluid is only possible when all functional elements interact simultaneously, each of the functional elements being a threaded section of identical design in pitch thereof between the cover and filter element and between filter element and filter housing, respectively; and
one end cap of the filter element facing the cover and bearing a locating ring having a threaded section on each of inner and outer circumferential sides thereof.