Patent ID: 11946439
Assignee: CATERPILLAR INC.
Field: Chemical engineering (Chemistry)
Classification: CPC F  B | IPC B  F

Claim 15:
16. A module housing for a fuel filter module comprising:
a one-piece housing body including an upper side, a lower side, and a plurality of transverse bolt holes extending horizontally through the one-piece housing body;
the one-piece housing body including a primary filter receptable, and a secondary filter receptacle each formed in the upper side, a fuel supply inlet, a filtered fuel outlet, and a drain port formed in the lower side;
the one-piece housing body further having formed therein a primary-side fuel passage fluidly connected to the primary filter receptacle and extending to an outgoing pump port formed in the lower side, an incoming pump port formed in the lower side, and a secondary-side fuel passage fluidly connected to the secondary filter receptacle and to one of the outgoing pump port or the filtered fuel outlet; and
the one-piece housing body further having formed therein a cross passage extending between the primary-side fuel passage and the secondary-side fuel passage and structured to fluidly connect the primary-side fuel passage to the secondary-side fuel passage.