US 12,257,534 B2
Fuel pre-filter module, filter element and filter head with a priming pump
Marcos Vicente Georgetti Marcondes, Sao Paulo (BR); Bruna de Carvalho Vessio, Sao Paulo (BR); Unildison Alves Dias, São Paulo (BR); Celio Santos Pereira, Sao Paolo (BR); and Gilberto Albertini, Sao Paolo (BR)
Assigned to MANN+HUMMEL GmbH, Ludwigsburg (DE)
Filed by MANN+HUMMEL GmbH, Ludwigsburg (DE)
Filed on Oct. 23, 2023, as Appl. No. 18/491,899.
Application 18/491,899 is a division of application No. 17/185,311, filed on Feb. 25, 2021, granted, now 11,826,671.
Application 17/185,311 is a continuation of application No. PCT/EP2019/072711, filed on Aug. 26, 2019.
Claims priority of provisional application 62/724,201, filed on Aug. 29, 2018.
Prior Publication US 2024/0042354 A1, Feb. 8, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B01D 35/00 (2006.01); B01D 29/15 (2006.01); B01D 35/153 (2006.01); B01D 35/26 (2006.01); F02M 37/34 (2019.01); B01D 36/00 (2006.01)
CPC B01D 35/005 (2013.01) [B01D 29/15 (2013.01); B01D 35/153 (2013.01); B01D 35/26 (2013.01); F02M 37/34 (2019.01); B01D 36/005 (2013.01); B01D 2201/291 (2013.01); B01D 2201/342 (2013.01); B01D 2201/4061 (2013.01); B01D 2201/4076 (2013.01); B01D 2201/4084 (2013.01); B01D 2201/4092 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A filter element comprising:
a filter medium configured as a hollow filter medium body;
a first end plate arranged on an axial end of the hollow filter medium body, the first end plate having a central tubular projection arranged on an axially outer side of the first end plate;
a first valve seat arranged within an interior of the central tubular projection; and
a first check valve arranged within the interior of the central tubular projection on the first valve seat and adapted to allow fluid flow in a first direction and block fluid flow in an opposite second direction;
wherein
the central tubular projection further includes a circumferentially extending seal holding groove formed on a radially outer surface of the central tubular projection; and
an O-ring seal is arranged in the circumferentially extending seal holding groove.