# US 2014/0150335 A1 · Additive dispersing filter and method

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- Number: US 2014/0150335 A1
- Document ID: US20140150335A1
- Status: Published application
- Kind: A1
- Application number: 14/172,320
- Filed: 2014-02-04
- Published: 2014-06-05
- Earliest claimed: 2007-02-13
- Assignees: Fram Group IP LLC
- Applicants: Fram Group IP LLC
- Inventors: Gerard W. Bilski; Ronald P. Rohrbach; Zafar Hussain
- Web page: https://patentgrep.com/patent/US20140150335A1

## CPC

- B01D 37/02: Precoating the filter medium; Addition of filter aids to the liquid being filtered {(devices for feeding reagents C02F1/685 and sub-groups; filter aids)}
- B01D 37/025: {additives incorporated in the filter}
- B01F 21/22: {using additional holders in conduits, containers or pools for keeping the solid material in place, e.g. supports or receptacles}
- B01F 21/221: {comprising constructions for blocking or redispersing undissolved solids}
- F01M 9/02: having means for introducing additives to lubricant
- F01M 11/03: Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means (filters B01D)
- B01F 21/15: {comprising constructions for blocking or redispersing undissolved solids, e.g. sieves, separators or guiding constructions (B01F21/221 takes precedence)}
- F01M 2001/1014: {comprising supply of additives}
- 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)
- B01F: MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING (mixing paints B44D3/06)
- F01M: LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING

## Abstract

A method and apparatus for dispersing an additive from an additive cartridge disposed in a housing of an oil filter is provided. The method including the steps of: using stagnation pressure to disperse the additive from the additive cartridge; and regulating a flow rate of the additive from the additive cartridge by restricting an inlet opening of an outlet path of the additive cartridge, wherein a portion of the outlet path is formed in a surface of a first piece of a two piece connector providing fluid communication between and an interior and an exterior of the additive cartridge.

## Claims

### Claim 1

An additive cartridge for dispersing an additive within a filter housing, the additive cartridge comprising:
a housing defining a receiving area for receipt of the additive;
a fluid inlet path through a wall of the housing, the fluid inlet path providing a means for increasing a pressure within the receiving area, the fluid inlet path having an inlet opening disposed adjacent to an outer wall portion of the housing; and
a fluid outlet path through the wall of the housing, the fluid outlet path providing a means for dispersing the additive from the receiving area when the pressure within the receiving area exceeds a predetermined value, the fluid outlet path having an outlet opening disposed adjacent to the outer wall portion of the housing, the outlet opening being covered by a shroud configured to deflect fluid flowing in a first direction away from the outlet opening and the inlet opening of the fluid inlet path is positioned to receive fluid flowing in the first direction; and
wherein fluid flow of the additive through the fluid outlet path is controlled by varying an inlet opening of the fluid outlet path by forming a portion of the fluid outlet path in a surface of a first piece of a two piece connector fluidly coupling the an interior and an exterior of the additive cartridge.

### Claim 2 (depends on 1)

The additive cartridge as in claim 1, further comprising:
a prefilter located around the inlet opening of the fluid outlet path wherein the prefilter is located within the additive cartridge.

### Claim 3 (depends on 1)

The additive cartridge as in claim 1, wherein the portion of the outlet path is formed by securing the surface of the first piece to a substantially flat surface of a second piece of the two piece connector.

### Claim 4 (depends on 1)

The additive cartridge as in claim 1, wherein the shroud defines an exit opening and the shroud has at least one opening in a portion of the shroud to prevent the fluid from creating a suction force at the outlet opening of the fluid outlet path.

### Claim 5 (depends on 1)

The additive cartridge as in claim 1, wherein the housing is formed from an oil intolerable plastic and the additive composition is a liquid and the pressure is a stagnation pressure created by the fluid flowing into the filter.

### Claim 6 (depends on 1)

The additive cartridge as in claim 1, wherein the filter is an oil filter and the fluid inlet path is provided by a tube having a “U”-shaped geometry having a first leg, a second leg, and a connector portion disposed therebetween, the first leg providing the inlet opening and the second leg providing an outlet opening of the fluid inlet path, the outlet opening of the fluid inlet path being located in an air pocket above a surface level of the additive disposed in the additive cartridge and wherein the second leg portion of the inlet path is formed in the surface of the first piece of the two piece connector providing fluid communication between and an interior and an exterior of the additive cartridge.

### Claim 7

A filter, comprising:
a filter housing defining an inlet fluid opening and an outlet fluid opening, the inlet fluid opening and the outlet fluid opening defining a fluid path through the filter;
a filter element disposed inside the filter housing, the filter element being disposed in the flow path such that fluid flows through the filter element; and
an additive cartridge for dispersing an additive within the filter housing, the additive cartridge comprising:
a housing defining a receiving area for receipt of the additive;
a fluid inlet path through a wall of the housing, the fluid inlet path providing a means for increasing a pressure within the receiving area, the fluid inlet path having an inlet opening disposed adjacent to an outer wall portion of the housing; and
a fluid outlet path through the wall of the housing, the fluid outlet path providing a means for dispersing the additive from the receiving area when the pressure within the receiving area exceeds a predetermined value, the fluid outlet path having an outlet opening disposed adjacent to the outer wall portion of the housing, the outlet opening being covered by a shroud configured to deflect fluid flowing in a first direction away from the outlet opening and the inlet opening of the fluid inlet path is positioned to receive fluid flowing in the first direction; and
wherein fluid flow of the additive through the fluid outlet path is controlled by varying an inlet opening of the fluid outlet path by forming a portion of the fluid outlet path in a surface of a first piece of a two piece connector fluidly coupling the an interior and an exterior of the additive cartridge.

### Claim 8 (depends on 7)

The filter as in claim 7, wherein the portion of the outlet path is formed by securing the surface of the first piece to a substantially flat surface of a second piece of the two piece connector.

### Claim 9 (depends on 7)

The filter as in claim 7, wherein the portion of the outlet path is formed by securing the surface of the first piece to a second piece of the two piece connector, wherein the first piece and the second piece each have a recessed area forming the portion of the outlet path when they are secured together.

### Claim 10 (depends on 1)

The additive cartridge as in claim 1, wherein the portion of the outlet path is formed by securing the surface of the first piece to a second piece of the two piece connector, wherein the first piece and the second piece each have a recessed area forming the portion of the outlet path when they are secured together.