Tank breather assembly and mounting configuration

1. A breather assembly, comprising:

a mounting collar having a first end and an opposing second end, the first end of the mounting collar being connected to a distal end of a fluid tank spout;

a breather insert connected to the second end of the mounting collar and having a perforated screen extending a distance past a base end of the fluid tank spout, wherein the perforated screen includes:

a lower half and an upper half, the upper half not extending past the first end of the mounting collar; and

apertures arranged in only the lower half, wherein the apertures extend at least a first distance above the base end of the fluid tank spout, and a second distance below the base end of the fluid tank spout, wherein the first distance is greater than the second distance; and

a breather cap having a first end and an opposing second end, the first end of the breather cap being connected to the breather insert and having a passage in communication with a hollow center of the mounting collar.

2. The breather assembly of claim 1 , wherein the distance past the base end of the fluid tank spout is about 5-25% of an axial length of the perforated screen.

3. The breather assembly of claim 1 , wherein the breather insert projects downward from the first end of the breather cap toward the mounting collar.

4. The breather assembly of claim 1 , wherein the breather insert further includes:

a coupling having an annular groove configured to receive a first end of the perforated screen;

a filter media encircled by the perforated screen; and

an obstructing rim located at a second end of the perforated screen.

5. The breather assembly of claim 4 , wherein the apertures of the perforated screen each have a diameter of about 2-4 millimeters.

6. The breather assembly of claim 5 , wherein the filter media is fabricated from a wire mesh.

7. The breather assembly of claim 6 , wherein the apertures are located radially outward of the wire mesh of the breather insert.

8. The breather assembly of claim 1 , wherein:

the filter media is a first filter media;

the breather cap further includes a second filter media; and

the second filter media is fabricated from a phenolic resin-impregnated paper.

9. The breather assembly of claim 1 , wherein:

the mounting collar is connectable to the fluid tank spout by way of a first threaded interface;

the mounting collar is connectable to the breather insert by way of a second threaded interface; and

the breather cap is connectable to the breather insert by way of a third threaded interface.

10. The breather assembly of claim 1 , wherein the breather cap includes overlapping annular walls.

11. The breather assembly of claim 1 , wherein the first and second ends of the mounting collar are circular openings.

12. The breather assembly of claim 1 , wherein the mounting collar is fabricated from a metallic material.

13. The breather assembly of claim 1 , wherein the mounting collar includes an internal surface positioned at about a 40-50 degree angle to the perforated screen.

14. The breather assembly of claim 1 , wherein the mounting collar has a height of about 70-84 millimeters and a diameter of about 113-127 millimeters.

15. A fluid tank, comprising:

a plurality of walls connected to each other to substantially enclose a volume, the plurality of walls including a top wall; and

an opening in the top wall configured to receive a first end of a breather assembly, wherein the breather assembly includes:

a mounting collar having a first end and an opposing second end, the first end of the mounting collar being connected to a distal end of a fluid tank spout;

a breather insert connected to the mounting collar, the breather insert having a perforated screen extending about 5-25% of an axial length of the perforated screen past a base end of the fluid tank spout, wherein the perforated screen includes:

a lower half and an upper half, the upper half not extending past the first end of the mounting collar; and

apertures arranged in only the lower half, wherein the apertures extend at least a first distance above the base end of the fluid tank spout, and a second distance below the base end of the fluid tank spout, wherein the distance is greater than the second distance;

a breather cap having a first end and an opposing second end, the first end of the breather cap being connected to the breather insert and having a passage in communication with a hollow center of the mounting collar; and

a splashguard located within the fluid tank in general alignment with the opening in the top wall.