IP Library Granted Patent US 11,571,640
Granted Patent B2
US 11,571,640 · App. 16/937,027 · Granted Feb 7, 2023

Quick oil change filter and assembly

Inventors: Elizabeth Woytach (Wauwatosa, WI); Bryce Metcalf (Wauwatosa, WI); Randall Ammentorp (Wauwatosa, WI); Chris Martinek (Wauwatosa, WI); Rodney Balzar (Wauwatosa, WI); Glen Stroik (Wauwatosa, WI)
Assignee: Briggs & Stratton, LLC
B01D27/08B01D27/103B01D27/106B01D27/148B01D35/18B01D35/30F01M5/002F01M11/03B01D2201/295B01D2201/316F01M2011/036
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Quick Facts
Patent No.
US 11,571,640
App. No.
16/937,027
Granted
Feb 7, 2023
Kind
B2
Abstract

A filtration system includes a filter housing and a filter cartridge. The filter housing includes a base and a cover removably coupled to the base. The cover includes a retainer. The filter cartridge has a longitudinal axis and is movable between an installed position within the filter housing and an uninstalled position outside the filter housing. The filter cartridge includes a top endplate including at least one protrusion extending upwardly away from the top endplate. The protrusion includes a tab extending radially outward from the protrusion that is structured to interact with the retainer to removably couple the filter cartridge to the cover. The filter cartridge further includes a bottom endplate and a filter media extending axially between the top endplate and the bottom endplate.

Claims (34)

1. A filtration system, the filtration system comprising:

a filter housing comprising a base and a cover removably coupled to the base, the cover comprising a retainer;

a drain defined in the base;

a channel defined in the base and having an outer diameter, the channel fluidly connected to the drain; and

a filter cartridge having a longitudinal axis and being configured to be movable between an installed position within the filter housing when the cover is coupled to the base and an uninstalled position when the cover is decoupled from the base, the filter cartridge comprising:

a top endplate comprising at least one protrusion extending upwardly away from the top endplate, the at least one protrusion including a tab extending radially outward from the at least one protrusion and structured to interact with the retainer to removably couple the filter cartridge to the cover;

a bottom endplate, the bottom endplate having an outer diameter that is larger than the outer diameter of the channel such that the bottom endplate covers the channel when the filter cartridge is in the installed position; and a filter media extending axially between the top endplate and the bottom endplate;

wherein the channel is not covered by the bottom endplate when the filter cartridge is in the uninstalled position; and

a pressure bypass valve positioned in the base and movable between a first position restricting flow and a second position permitting flow, wherein in the second position, the pressure bypass valve provides a secondary flow path through the filter housing without passing through the filter cartridge, the pressure bypass valve moving to the second position when a threshold fluid pressure is reached within the filter cartridge.

2. The filtration system of claim 1 , wherein the at least one protrusion comprises four protrusions extending upwardly away from the top endplate, wherein each of the four protrusions are structured to interact with the retainer to removably couple the filter cartridge to the cover, and wherein the four protrusions are circumferentially spaced apart about the longitudinal axis.

3. The filtration system of claim 1 , wherein the base of the filter housing defines an inlet, and an outlet in fluid communication with the inlet, wherein during operation of the filtration system, fluid flows in a first flow path from the inlet, into the filter cartridge, and to the outlet.

4. The filtration system of claim 3 , further comprising a cylindrically shaped sleeve positioned within the base, the sleeve circumferentially surrounding the filter cartridge and being located between the inlet and the filter cartridge when the filter cartridge is in the installed position, wherein an exterior of the sleeve and the base define a gap therebetween to direct fluid circumferentially about the filter cartridge, and wherein a slot is formed within the sleeve to define a fluid pathway from the gap into an interior of the sleeve to the filter cartridge.

5. The filtration system of claim 4 , wherein a width of the gap is between approximately 0.001 inches and approximately 0.1 inches.

6. The filtration system of claim 1 , wherein the tab interacts with the retainer by engaging and at least partially overlapping the retainer to create a removable coupling between the filter cartridge and the cover.

7. The filtration system of claim 1 , further comprising a pipe coupled to the base and configured to be at least partially received by the filter cartridge when the filter cartridge is in the installed position.

8. A filtration system, the filtration system comprising:

a filter housing comprising a base and a cover removably coupled to the base, the cover comprising a retainer, the base comprising:

a drain; an outlet; an inlet fluidly coupled to the outlet; a first raised surface defining a first bottom portion; a second raised surface defining a second bottom portion; and a channel defined between the first bottom portion and the second bottom portion, the channel fluidly connected to the drain; and

a filter cartridge having a longitudinal axis and being configured to be movable between an installed position within the filter housing when the cover is removably coupled to the base and an uninstalled position when the cover is decoupled from the base, the filter cartridge comprising: a top endplate comprising at least one protrusion structured to interact with the retainer to removably couple the filter cartridge to the cover;

a bottom endplate defining a filter outlet opening, the bottom endplate configured to contact the first bottom portion and the second bottom portion when the filter cartridge is in the installed position such that a fluid cannot flow into the drain when the filter cartridge is in the installed position; and

a filter media extending axially between the top endplate and the bottom endplate; and

a pipe coupled to the base, the pipe extending into the filter outlet opening and toward the top endplate when the filter cartridge is in the installed position to define a portion of a fluid flow path between the inlet and the outlet;

wherein the channel is not covered by the bottom endplate when the filter cartridge is in the uninstalled position; and

a pressure bypass valve positioned in the base and movable between a first position restricting flow and a second position permitting flow, wherein in the second position, the pressure bypass valve provides a secondary flow path through the filter housing without passing through the filter cartridge, the pressure bypass valve moving to the second position when a threshold fluid pressure is reached within the filter cartridge.

9. The filtration system of claim 8 , wherein the pipe is received by the filter outlet opening such that the pipe extends along the longitudinal axis and is located within the filter media, and wherein the pipe fluidly couples an interior of the filter media to the outlet.

10. The filtration system of claim 9 , wherein the pipe is received by the filter outlet opening such that an inlet opening of the pipe is located proximate the top endplate, and wherein the fluid flow path extends from the inlet, to the inlet opening of the pipe, to the outlet.

11. The filtration system of claim 8 , wherein the top endplate comprises four protrusions extending upwardly away from the top endplate, wherein the four protrusions are circumferentially spaced about the longitudinal axis.

12. The filtration system of claim 8 , wherein the cover comprises a cup structured to retain fluid when the cover is inverted.

13. The filtration system of claim 8 , wherein the cover further comprises a hex drive extending upwardly away from the cover.

14. The filtration system of claim 4 , wherein the gap is configured to affect a flow velocity of the fluid within the filter housing.

15. The filtration system of claim 4 , wherein the gap is configured to increase a flow velocity of the fluid such that an average temperature of the fluid is reduced.

16. The filtration system of claim 4 , wherein fluid entering the base is directed through the gap and the slot.

17. The filtration system of claim 4 , wherein the sleeve is configured to impart a rotational flow within the filter housing.

18. The filtration system of claim 17 , wherein the rotational flow is configured to effectuate cyclonic filtering of the fluid.

Assignments (3)
SECURITY INTEREST Recorded Feb 17, 2023
From: BRIGGS & STRATTON, LLC
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 062729/0725 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 11, 2022
From: BRIGGS & STRATTON CORPORATION
To: BRIGGS & STRATTON, LLC
Reel/Frame 061642/0007 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 9, 2021
From: WOYTACH, ELIZABETH; METCALF, BRYCE; AMMENTORP, RANDALL; MARTINEK, CHRIS; BALZAR, RODNEY; STROIK, GLEN
To: BRIGGS & STRATTON CORPORATION
Reel/Frame 055198/0013 →
Continuity (2)
Provisional Application 62878285 · Jul 24, 2019
Related Publication 20210023480A1 · Jan 28, 2021