IP Library Granted Patent US 12,478,902
Granted Patent B2
US 12,478,902 · App. 16/358,454 · Granted Nov 25, 2025

System including a reusable oil filter

Inventor: John K. Apostolides (Pittsburgh, PA)
Assignee: RPM INDUSTRIES, LLC
B01D29/15B01D29/668B01D35/16B01D35/30
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Quick Facts
Patent No.
US 12,478,902
App. No.
16/358,454
Granted
Nov 25, 2025
Kind
B2
Abstract

A system. The system includes a reuseable oil filter, a first port, a second port and a valve assembly. The reuseable oil filter has an inlet and an outlet, and includes a housing and a filter element positioned within the housing. The valve assembly is in selective fluid communication with the reuseable oil filter, the first port and the second port.

Claims (33)

1 . A system, comprising:

a reusable engine oil filter having an inlet and an outlet and configured to be cleaned and reused without having to be disconnected or removed from an internal combustion engine, the reusable engine oil filter comprising:

a housing; and

a filter element positioned within and surrounded by the housing;

a first port couplable to at least one of a purge system and a refill system;

a second port couplable to an evacuation system;

a valve assembly in fluidic communication with the reusable engine oil filter;

a sensing device positioned within the housing, wherein the sensing device is configured to measure a quality of an oil within the reusable engine oil filter, wherein the measured quality comprises an age of the oil, wherein the valve assembly is configured to selectively open and close the first port and the second port such that, once the reusable engine oil filter is installed in place, the reusable engine oil filter can be cleaned and reused without removal; and

a traveling element positioned adjacent a clean side of the filter element, wherein the traveling element is selectively movable between a first position and a second position, wherein the traveling element is configured to prevent cleaning fluid from passing and reaching the outlet during a purge operation, and wherein moving the traveling element between the first position and the second position allows the filter element to be cleaned in an incremental section-by-section manner.

2 . The system of claim 1 , wherein the valve assembly is configured to selectively control:

delivery of the cleaning fluid through the first port to the clean side of the filter element during the purge operation;

delivery of new oil through the first port to a dirty side of the reusable engine oil filter during a refill operation; and

evacuation of dirty oil from a dirty side of the filter element during an evacuation operation for delivery to an external system via the second port.

3 . The system of claim 1 , further comprising a blocking member configured to selectively block a fluid on a clean side of the filter element from passing out of the outlet of the reusable engine oil filter.

4 . The system of claim 1 , further comprising:

a first quick disconnect couplable to the first port; and

a second quick disconnect couplable to the second port.

5 . A reusable engine oil filter system, comprising:

a filter element;

an oil inlet in fluid communication with a first side of the filter element;

an oil outlet in fluid communication with a second side of the filter element;

a valve assembly selectively changeable between a first condition and a second condition, wherein the valve assembly establishes fluid communication between a purge fluid inlet and the second side of the filter element in the first condition, and wherein the valve assembly prevents fluid communication between the purge fluid inlet and the second side of the filter element in the second condition; and

a traveling element positioned adjacent the second side of the filter element, wherein the traveling element comprises a base member that is selectively movable between a first position and a second position, wherein the base member is configured to prevent purge fluid entering from the purge fluid inlet from passing and reaching the oil outlet when the valve assembly is in the first condition, and wherein moving the traveling element between the first position and the second position allows the filter element to be cleaned in an incremental section-by-section manner.

6 . The reusable engine oil filter of claim 5 , further comprising a housing configured to be installed within an internal combustion engine, wherein the filter element, the valve assembly, and the traveling element are positioned within the housing.

7 . The reusable engine oil filter of claim 5 , wherein the filter element comprises a metal.

8 . The reusable engine oil filter of claim 5 , wherein the filter element comprises a nanoparticle.

9 . The reusable engine oil filter of claim 5 , wherein the first side of the filter element is a dirty side of the filter element, wherein the second side of the filter element is a clean side of the filter element, wherein the valve assembly is configured to selectively control:

delivery of a cleaning fluid to the clean side of the filter element;

delivery of new oil to the dirty side of the filter element; and

evacuation of dirty oil from the dirty side of the filter element for delivery to an external system.

10 . The reusable engine oil filter of claim 5 , further comprising a sensing device configured to measure a parameter of oil in the reusable engine oil filter.

11 . The reusable engine oil filter of claim 5 , wherein the traveling element further comprises a spiral shaped element configured to rotate, wherein rotation of the spiral shaped element causes the traveling element to move between the first position and the second position.

12 . The reusable engine oil filter of claim 5 , further comprising a blocking member selectively movable between a first position and a second position, wherein the blocking member blocks the oil outlet in the first position and wherein the blocking member does not block the oil outlet in the second position, such that when the valve assembly is in the first condition and the blocking member is in the first position, the valve assembly establishes fluid communication between the purge fluid inlet and the second side of the filter element and the blocking member blocks the oil outlet.

Assignments (2)
SECURITY INTEREST Recorded May 1, 2026
From: RPM INDUSTRIES, LLC
To: PNC BANK, NATIONAL ASSOCIATION
Reel/Frame 074543/0491 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 24, 2019
From: APOSTOLIDES, JOHN K.
To: RPM INDUSTRIES, LLC
Reel/Frame 049565/0570 →
Continuity (2)
Provisional Application 62644901 · Mar 19, 2018
Related Publication 20190282935A1 · Sep 19, 2019
References Cited (34)
US 3421630A · Acosta · 1969 [cited by examiner]
US 4026806A · Drori · 1977 [cited by examiner]
US 4624785A · Drori · 1986 [cited by examiner]
US 4906357A · Drori · 1990 [cited by examiner]
US 5145033A · Bedi · 1992 [cited by examiner]
US 5526782A · Bedi · 1996 [cited by examiner]
US 5779900A · Holm · 1998 [cited by examiner]
US 5855794A · Caracciolo, Jr. · 1999 [cited by examiner]
US 5957170A · Bedi et al. · 1999 [cited by applicant]
US 6068762A · Stone · 2000 [cited by examiner]
US 6652740B2 · Schoess · 2003 [cited by examiner]
US 6853203B2 · Beylich · 2005 [cited by examiner]
US 11612841B2 · Spengler · 2023 [cited by examiner]
US 20050092184A1 · Becker · 2005 [cited by applicant]
US 20060254986A1 · Hanson · 2006 [cited by examiner]
US 20090056542A1 · Carew · 2009 [cited by applicant]
US 20120199528A1 · Beplate · 2012 [cited by applicant]
US 20140290761A1 · Apostolides · 2014 [cited by examiner]
US 20160032603A1 · Heg · 2016 [cited by applicant]
US 20180066803A1 · Apostolides et al. · 2018 [cited by applicant]
DE 102007037525A1 · 2009 [cited by examiner]
ES 2190882A1 · 2003 [cited by applicant]
JP 735300A · 1995 [cited by applicant]
JP 2003154216A · 2003 [cited by applicant]
JP 2011183257A · 2011 [cited by applicant]
JP 2014136194A · 2014 [cited by applicant]
WO 2014054086A1 · 2014 [cited by applicant]
Smitha, Experimental studies on fuel filter coated with nanoparticles on the exhaust emissions of 4-stroke engine, Jul. 7, 2017, p. 1-3 (Year: 2017). [cited by examiner]
CPC, The benefits of Quick Connect and Disconnect Couplings, Mar. 7, 2017, p. 1-3 (Year: 2017). [cited by examiner]
Langfitt et al., Assessment of Lube Oil Management and Self-Cleaning Oil Filter Feasibility in WSF Vessels, Oct. 31, 2014, p. 18-22 (Year: 2014). [cited by examiner]
English Translaton of DE 102007037525 A1 (Year: 2009). [cited by examiner]
International Preliminary Report on Patentability for International Application No. PCT/US2019/023006, mailed Oct. 1, 2020. [cited by applicant]
International Search Report and Written Opinion of the International Searching Authority for International Application No. PCT/US2019/023006, dated May 24, 2019. [cited by applicant]
Extended European Search Report for European Application No. 19771313 dated Oct. 6, 2021, 8 pages. [cited by applicant]