Prosecution Insights
Last updated: April 19, 2026
Application No. 18/443,481

DUAL-PUMP COOLING CIRCUIT

Non-Final OA §102§103
Filed
Feb 16, 2024
Examiner
TRIGGS, JAMES J
Art Unit
3615
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Oshkosh Corporation
OA Round
1 (Non-Final)
88%
Grant Probability
Favorable
1-2
OA Rounds
1y 11m
To Grant
97%
With Interview

Examiner Intelligence

Grants 88% — above average
88%
Career Allow Rate
1220 granted / 1389 resolved
+35.8% vs TC avg
Moderate +9% lift
Without
With
+9.2%
Interview Lift
resolved cases with interview
Fast prosecutor
1y 11m
Avg Prosecution
29 currently pending
Career history
1418
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
52.0%
+12.0% vs TC avg
§102
18.9%
-21.1% vs TC avg
§112
24.1%
-15.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1389 resolved cases

Office Action

§102 §103
Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . DETAILED ACTION Information Disclosure Statement 1. The information disclosure statement (IDS) submitted on (2/16/24) is in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement is being considered by the examiner. Claim Rejections - 35 USC § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale or otherwise available to the public before the effective filing date of the claimed invention. Claims 1-19 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Flipkowski (US PG PUB NO 2019/0351740). [CLAIM 1] Regarding claim 1, Flipkowski discloses a cooling system comprising: a first and a second electrical component (Flipkowski, FIG 5, components such as 508 and 516); a first coolant pump (One of pump 536 and 572) fluidly coupled to the first electrical component (Flipkowski, FIG 5 illustrates all of the cooling and powertrain components) and configured to supply a first portion of coolant to the first electrical component (Flipkowski, FIG 5); a second coolant pump (One of the pumps 536 and 572) fluidly coupled to an inlet of the first coolant pump (Flipkowski, FIG 5 illustrates a circulating closed loop which coolant moves within the two coolant pumps) and the second electrical component (Flipkowski, FIG 5, components such as 508 and 516) the second coolant pump being configured to supply the first portion of the coolant to the first coolant pump and a second portion of the coolant to the second electrical component (Flipkowski, FIG 5 illustrates a circulating closed loop which coolant moves within the two pumps); and a radiator (532) fluidly coupled downstream of the first electrical component and the second electrical component and configured to remove thermal energy from the coolant (Flipkowski is a closed loop cooling system which reduces temperature to each designated vehicle component via coolant pumps and uses the radiator (532) for heat transfer). PNG media_image1.png 817 675 media_image1.png Greyscale [CLAIM 2] Regarding claim 2, Flipkowski discloses the cooling system of Claim 1, wherein the radiator (532) is fluidly coupled to an inlet of the second coolant pump (Flipkowski is a closed loop cooling system which circulates the coolant as designed to and from each of the pumps 536 and 572). [CLAIM 3] Regarding claim 3, Flipkowski discloses the cooling system of Claim 1, further comprising: a cooling demand sensor configured to measure a cooling demand of the first electrical component (Flipkowski, paragraph [0003] discloses a large numbers of sensors for temperature control related to the cooling system); and a controller configured to vary a speed of the first coolant pump based on the cooling demand of the first electrical component (Flipkowski, paragraph [0021] discloses controllers which are operable to modulate pump speeds). [CLAIM 4] Regarding claim 4, Flipkowski discloses the cooling system of Claim 3, wherein the controller is configured to vary a speed of the second coolant pump based on the cooling demand of the first electrical component (Flipkowski, paragraph [0021] discloses controllers which are operable to modulate pump speeds). [CLAIM 5] Regarding claim 5, Flipkowski discloses the cooling system of Claim 3, wherein the cooling demand sensor is a temperature sensor configured to measure a temperature of the first electrical component (Flipkowski, paragraph [0003] discloses a large numbers of sensors for temperature control related to the cooling system and can be employed to provide temperature data within the system). [CLAIM 6] Regarding claim 6, Flipkowski discloses the cooling system of Claim 3, wherein the controller is configured to increase the speed of the first coolant pump in response to an increase in the cooling demand of the first electrical component (Flipkowski, paragraph [0021] discloses controllers which are operable to modulate pump speeds based on demand). [CLAIM 7] Regarding claim 7, Flipkowski discloses the cooling system of Claim 6, wherein the controller is configured to increase the speed of the first coolant pump and the speed of the second coolant pump in response to the increase in the cooling demand of the first electrical component (Flipkowski, paragraph [0021] discloses controllers which are operable to modulate pump speeds and based on demand). [CLAIM 8] Regarding claim 8, Flipkowski discloses the cooling system of Claim 1, further comprising: a cooling demand sensor configured to measure a cooling demand of the first electrical component (Flipkowski, paragraph [0003] discloses a large numbers of sensors for temperature control related to the cooling system and can be employed to provide temperature data within the system); and a controller configured to vary a speed of the second coolant pump based on the cooling demand of the first electrical component (Flipkowski, paragraph [0021] discloses controllers which are operable to modulate pump speed). [CLAIM 9] Regarding claim 9, Flipkowski discloses the cooling system of Claim 1, further comprising: a cooling demand sensor configured to measure a cooling demand of the second electrical component (Flipkowski, paragraph [0003] discloses a large numbers of sensors for temperature control related to the cooling system and can be employed to provide temperature data within the system); and a controller () configured to vary a speed of the second coolant pump based on the cooling demand of the first electrical component (Flipkowski, paragraph [0021] discloses controllers which are operable to modulate pump speeds). [CLAIM 10] Regarding claim 10, Flipkowski discloses the cooling system of Claim 9, wherein the controller (Flipkowski, paragraph [0021] discloses controllers) configured to increase the speed of the second coolant pump in response to an increase in the cooling demand of the second electrical component (Flipkowski is operable to modulate pump speeds). [CLAIM 11] Regarding claim 11, Flipkowski discloses the cooling system of Claim 10, wherein the controller (Flipkowski, paragraph [0021] discloses controllers) is configured to increase the speed of the second coolant pump and decrease the speed of the first coolant pump in response to the increase in the cooling demand of the second electrical component (Flipkowski, paragraph [0021] discloses controllers which are operable to modulate a first and a second pump speed). [CLAIM 12] Regarding claim 12, Flipkowski discloses the cooling system of Claim 11, wherein the cooling demand sensor is a second cooling demand sensor (Flipkowski, paragraph [0003] discloses a large numbers of sensors for temperature control related to the cooling system and can be employed to provide temperature data within the system), further comprising a first cooling demand sensor configured to measure a cooling demand of the first electrical component (Flipkowski, paragraph [0003] discloses a large numbers of sensors for temperature control related to the cooling system and can be employed to provide temperature data within the system and moderate component temps), wherein the controller is configured to increase the speed of the first coolant pump and the speed of the second coolant pump in response to an increase in both the cooling demand of the first and the second electrical component (Flipkowski, paragraph [0021] discloses controllers which are operable to modulate a first and second pump speed). [CLAIM 13] Regarding claim 13, Flipkowski discloses the cooling system of Claim 1, wherein the first electrical component includes at least one of an inverter or an electric motor (Flipkowski, FIG 5, motor/inverters 508 and 516 which are components and can be selectively considered as “first”). PNG media_image1.png 817 675 media_image1.png Greyscale [CLAIM 14] Regarding claim 14, Flipkowski discloses the cooling system of Claim 1, wherein the second electrical component includes at least one of a motor, an inverter (Flipkowski, FIG 5, motor/inverters 508 and 516), or a DC-DC converter. [CLAIM 15] Regarding claim 15, Flipkowski discloses a cooling system comprising: a first branch including at least one first electrical component (Flipkowski, FIG 5 illustrates all of the components which are cooled/heated via coolant paths which create plural “branches”); a first coolant pump (One of pumps 536 and 572) fluidly coupled to the first branch and configured to supply a first portion of coolant to the first branch (Flipkowski is a closed loop cooling system which reduces temperature to each designated vehicle component via pumps and uses the radiator for heat transfer); a second branch Flipkowski, FIG 5 illustrates all of the components which are cooled/heated via coolant paths which create plural “branches”) including at least one second electrical component (Flipkowski, FIG 5 illustrates all of the components which are cooled); a second coolant pump (One of pumps 536 and 572) positioned upstream of the first coolant pump (Any desired coolant pump position can be employed without limiting the vehicle component cooling) and fluidly coupled to the second branch, the second coolant pump (Either of pumps 536 and 572) being configured to supply the first portion of the coolant to the first coolant pump and a second portion of the coolant to the second branch (Flipkowski is a closed loop cooling system which is operable to provide coolant in any desired area/branch within the vehicle); and a radiator (532) fluidly coupled downstream of the first branch and the second branch and configured to remove thermal energy from the coolant (Flipkowski is a closed loop cooling system which reduces temperature to each designated vehicle component via the pumps and uses the radiator for heat transfer). CLAIM 16] Regarding claim 16, Flipkowski discloses the cooling system of Claim 15, wherein the first branch includes an inverter/electric motor wherein the inverter is configured to supply electrical energy to the electric motor (Flipkowski, FIG 5, motor/inverters 508 and 516 where the inverter sends battery current to the motors). [CLAIM 17] Regarding claim 17, Flipkowski discloses the cooling system of Claim 15, wherein the second branch includes an inverter/electric motor (Flipkowski, FIG 5, motor/inverters 508 and 516), wherein the inverter is configured to supply electrical energy to the electric motor (Flipkowski, FIG 5, motor/inverters 508 and 516 where the inverter sends battery current to the motors). [CLAIM 18] Regarding claim 18, Flipkowski discloses the cooling system of Claim 17, wherein the second branch further includes a DC-DC converter (See google search below, and Flipkowski is exemplary disclosing inverters which be modified/operable as converters if desired for a particular electrical architecture). PNG media_image2.png 789 1185 media_image2.png Greyscale [CLAIM 19] Regarding claim 19, Flipkowski discloses a vehicle comprising: a chassis (Flipkowski, FIG 1 illustrates a vehicle including a chassis); a tractive element (Flipkowski, FIG 1, wheels) coupled to the chassis; a first electric motor (Flipkowski, FIG 5, components such as motors 508 and 516) coupled to the chassis (Flipkowski, FIG 5) and configured to drive the tractive element to propel the vehicle (Flipkowski illustrates the motors to propel the vehicle and is exemplary); an implement (Exemplary FIG 1 of Flipkowski illustrates hood, doors and rear bonnet which are conventionally operated with power and a control fob) coupled to the chassis; a second electric motor (Flipkowski, FIG 5, components such as 508 and 516) configured to move the implement relative to the chassis (As stated above, the body features conventionally operate using stored energy which is generated by any of the vehicle motors and fed to vehicle electronics such as 520 in FIG 5 of Flipkowski via battery); and a cooling system including: a first branch (Flipkowski, FIG 5 illustrates the coolant routing) including the first electric motor (Flipkowski, FIG 5, components such as motors 508 and 516); a first coolant pump (One of the pumps 536 and 572) fluidly coupled to the first branch and configured to supply a first portion of coolant to the first branch (Flipkowski, FIG 5); a second branch (Flipkowski, FIG 5 is a closed loop cooling system and each flow path forms an exemplary “branch”) including the second electric motor (Flipkowski, FIG 5, components such as 508 and 516); and a second coolant pump (One of the pumps 536 and 572) positioned upstream of the first coolant pump and fluidly coupled to the second branch (Any desired pump position can be employed without limiting the vehicle component cooling using the same number of pumps), the second coolant pump (One of the pumps 536 and 572) being configured to supply the first portion of the coolant to the first coolant pump (One of the pumps 536 and 572) and a second portion of the coolant to the second branch (Flipkowski, FIG 5 is a closed loop cooling system and each flow path forms an exemplary “branch”). PNG media_image3.png 734 680 media_image3.png Greyscale Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102 of this title, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. The factual inquiries set forth in Graham v. John Deere Co., 383 U.S. 1, 148 USPQ 459 (1966), that are applied for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. 1. Claim 20 is rejected under 35 U.S.C. 103 as being unpatentable over Flipkowski (US PG PUB NO 2019/0351740) in view of Smith (US 3,899,091). [CLAIM 20] Regarding claim 20, Flipkowski discloses the vehicle of Claim 19. -However, it fails to disclose wherein the vehicle is a refuse vehicle, and wherein the implement includes at least one of a lift assembly, a door, a fork, or a packer. -Nevertheless, Smith discloses a refuse packer suitable for use with a dual-coolant pump powertrain and Flipkowski being an exemplary vehicle which can be used to haul refuse if desired based on the body configuration). -Thus, it would have been obvious to one having ordinary skill in the art at the time the invention was effectively filed to have modified Flipkowski for an industrial vehicle application as taught by Smith with a reasonable expectation of success in order to upfit plural vehicle applications (e.g. a packer) and increase utility. PNG media_image4.png 764 753 media_image4.png Greyscale Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure and can be found on the attached Notice of References Cited. Any inquiry concerning this communication or earlier communications from the examiner should be directed to whose telephone number is (571)270-3411. The examiner can normally be reached on 9AM-6PM PST. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Marc Jimenez can be reached on (571)272-.4530. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /JAMES J TRIGGS/Examiner, Art Unit 3615 /MARC Q JIMENEZ/Supervisory Patent Examiner, Art Unit 3615
Read full office action

Prosecution Timeline

Feb 16, 2024
Application Filed
Mar 19, 2026
Non-Final Rejection — §102, §103 (current)

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
88%
Grant Probability
97%
With Interview (+9.2%)
1y 11m
Median Time to Grant
Low
PTA Risk
Based on 1389 resolved cases by this examiner. Grant probability derived from career allow rate.

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