US 9,808,745 B2
Filter element and filter assembly with recirculation
Bryant A. Morris, Peoria, IL (US); and Jeffrey R. Ries, Metamora, IL (US)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on Mar. 24, 2014, as Appl. No. 14/223,125.
Prior Publication US 2015/0265953 A1, Sep. 24, 2015
This patent is subject to a terminal disclaimer.
Int. Cl. B01D 27/07 (2006.01); B01D 27/10 (2006.01); B01D 29/11 (2006.01); B01D 29/15 (2006.01); B01D 29/23 (2006.01); B01D 29/88 (2006.01); B01D 29/21 (2006.01); F16N 39/06 (2006.01)
CPC B01D 29/232 (2013.01) [B01D 27/07 (2013.01); B01D 27/103 (2013.01); B01D 29/114 (2013.01); B01D 29/117 (2013.01); B01D 29/15 (2013.01); B01D 29/21 (2013.01); B01D 29/885 (2013.01); B01D 2201/0415 (2013.01); B01D 2201/291 (2013.01); F16N 39/06 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A filter element comprising:
a tubular member having a longitudinal axis and including:
a partition at least partially defining a first chamber and at least partially defining a second chamber, the partition extending longitudinally in the tubular member and being configured to prevent flow communication between the first chamber and the second chamber within the tubular member;
an end portion at least partially defining an inlet port configured to provide flow communication into the first chamber, and at least partially defining an outlet port configured to provide flow communication exiting from the second chamber;
at least one outlet aperture configured to provide flow communication exiting from the first chamber; and
at least one inlet aperture configured to provide flow communication into the second chamber;
a filter medium associated with the at least one outlet aperture and the at least one inlet aperture, wherein the filter element is configured such that fluid passing through the filter element from the inlet port to the outlet port passes through the first chamber, the filter medium, and the second chamber; and
an end cap defining a return aperture and a return passage, the return aperture being configured to provide flow communication between fluid exiting from the first chamber and fluid entering the inlet port, the return aperture being in fluid communication with the first chamber via the return passage, the end cap including
a plate extending transverse to the longitudinal axis of the tubular member, the return aperture extending through the plate in a direction parallel to the longitudinal axis, and
a wall extending transverse to the plate, the wall defining a return orifice extending radially through the wall and being in flow communication with the return aperture via the return passage in the end cap.