# US 10,767,607 B2 · Filter assembly for a fresh air filtration system, fresh air filtration system made therewith, and method of filtering fresh air

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- Number: US 10,767,607 B2
- Document ID: US10767607B2
- Status: Granted
- Kind: B2
- Application number: 15/992,545
- Filed: 2018-05-30
- Published: 2018-12-06
- Granted: 2020-09-08
- Earliest claimed: 2017-06-05
- Assignees: Fluid Routing Solutions, Inc.
- Applicants: Jeffrey Martin; Gary Zelinski; William Boike; Rick McQuiston
- Inventors: Jeffrey Martin; Gary Zelinski; William Boike; Rick McQuiston
- Web page: https://patentgrep.com/patent/US10767607B2

## CPC

- F02M 35/02425: {Support structures increasing the stability or stiffness of the filter element}
- B01D 46/58: connected in parallel
- F02M 35/02433: {Special alignment with respect to the air intake flow, e.g. angled or in longitudinal flow direction}
- F02M 35/02441: {Materials or structure of filter elements, e.g. foams}
- F02M 35/02491: {Flat filter elements, e.g. rectangular}
- B01D 46/0005: {Mounting of filtering elements within casings, housings or frames (B01D46/2422 takes precedence)}
- B01D 46/001: {Means for connecting filter housings to supports}
- B01D 46/106: {Ring-shaped filtering elements}
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)

## Abstract

A filter assembly for a fresh air filtration system, the fresh air filtration system made therewith, and a method of filtering fresh air are provided. The filter assembly includes a filter housing and at least one filter element supported within the housing, the housing having at least one inlet for receiving a fluid to be filtered and at least one outlet for discharging filtered fluid, wherein the at least one inlet and at least one outlet are on a common side of the housing.

## Claims

### Claim 1

A filter assembly comprising a filter housing and at least one filter element supported within the housing, the housing having at least one inlet for receiving a fluid to be filtered and at least one outlet for discharging filtered fluid, wherein the at least one inlet and at least one outlet are on a common side of the housing;
wherein the housing includes a base portion and a connector cap portion releasably coupled to the base portion, the base portion and the connector cap portion defining a chamber;
wherein the connector cap portion has a central passageway including a cylindrically-shaped portion extending into the chamber, and a plurality of openings adjacent the central passageway, and wherein the at least one filter element is supported in the chamber such that fluid flows from the plurality of openings to the central passageway via the at least one filter element;
wherein the at least one filter element is at least partially supported on the cylindrically-shaped portion of the connector cap portion; and
whereby fluid is drawn into the chamber via the plurality of openings and passes through the at least one filter element before being discharged from the chamber via the central passageway.

### Claim 2 (depends on 1)

The filter assembly of claim 1, further comprising a second filter element at least partially supported on the cylindrically-shaped portion of the connector cap portion, whereby fluid is drawn into the chamber via the plurality of openings and passes through the first and second filter elements before being discharged from the chamber via the central passageway.

### Claim 3 (depends on 2)

The filter assembly of claim 2, wherein the connector cap portion includes at least one tab configured to cooperate with at least one corresponding retaining barb of the base portion for securing the connector cap portion to the base portion.

### Claim 4 (depends on 3)

The filter assembly of claim 3, wherein the first and second filter elements are spaced apart from a bottom of the base portion.

### Claim 5 (depends on 4)

The filter assembly of claim 4, wherein the first and second filter elements are coextensive with the cylindrically-shaped portion of the connector cap portion.

### Claim 6 (depends on 5)

The filter assembly of claim 5, wherein the first filter element has twenty-five pores per inch and the second filter element has sixty pores per inch.

### Claim 7 (depends on 6)

The filter assembly of claim 6, wherein the plurality of openings includes at least one rectangular-shape opening and at least one circular-shape opening.

### Claim 8 (depends on 7)

The filter assembly of claim 7, wherein the position of the first and second filter elements is fixed relative to the connector cap portion by one or more ribs formed on an inner surface of the base portion.

### Claim 9 (depends on 1)

A fresh air filtration system comprising a filter assembly as set forth in claim 1, and a fresh air line coupled to the filter assembly for supplying filtered air to an associated component.

### Claim 10

A method of filtering fresh air comprising:
providing filter assembly including a filter housing and at least one filter element supported within the housing, the housing having at least one inlet for receiving air to be filtered and at least one outlet for discharging filtered air, wherein the at least one inlet and at least one outlet are on a common side of the housing; and
causing air to flow between the inlet and the outlet through the at least one filter element;
whereby air exiting the outlet is filtered;
wherein the housing includes a base portion and a connector cap portion releasably coupled to the base portion, the base portion and the connector cap portion defining a chamber;
wherein the connector cap portion has a central passageway including a cylindrically-shaped portion extending into the chamber, and a plurality of openings adjacent the central passageway, and wherein the at least one filter element is supported in the chamber such that fluid flows from the plurality of openings to the central passageway via the at least one filter element;
wherein the at least one filter element is at least partially supported on the cylindrically-shaped portion of the connector cap portion; and
whereby fluid is drawn into the chamber via the plurality of openings and passes through the at least one filter element before being discharged from the chamber via the central passageway.

### Claim 11 (depends on 10)

The method of claim 10, further comprising providing a second filter element at least partially supported on the cylindrically-shaped portion of the connector cap portion, whereby air is drawn into the chamber via the plurality of openings and passes through the first and second filter elements before being discharged from the chamber via the central passageway.

### Claim 12 (depends on 11)

The method of claim 11, wherein the connector cap portion includes at least one tab configured to cooperate with at least one corresponding retaining barb of the base portion for securing the connector cap portion to the base portion.

### Claim 13 (depends on 12)

The method of claim 12, wherein the first and second filter elements are spaced apart from a bottom of the base portion.

### Claim 14 (depends on 13)

The method of claim 13, wherein the first and second filter elements are coextensive with the cylindrically-shaped portion of the connector cap portion.