Prosecution Insights
Last updated: July 17, 2026
Application No. 18/822,726

BLOWER ASSEMBLY FOR A CLEANING DEVICE OF A COMBINE HARVESTER

Non-Final OA §102§103
Filed
Sep 03, 2024
Priority
Nov 09, 2023 — DE 102023131103.4
Examiner
WEBB, SUNNY DANIELLE
Art Unit
Tech Center
Assignee
Deere & Company
OA Round
1 (Non-Final)
85%
Grant Probability
Favorable
1-2
OA Rounds
1y 3m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 85% — above average
85%
Career Allowance Rate
50 granted / 59 resolved
+24.7% vs TC avg
Strong +20% interview lift
Without
With
+20.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
23 currently pending
Career history
90
Total Applications
across all art units

Statute-Specific Performance

§103
92.9%
+52.9% vs TC avg
§102
3.0%
-37.0% vs TC avg
§112
4.2%
-35.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 59 resolved cases

Office Action

§102 §103
DETAILED ACTION 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 . Claim Objections Claims 1-6 are objected to because of the following informalities: Claim 1, line 9 recites “arranged tangentially to the blower rotor is connected;”, should read – arranged tangentially to the blower rotor –. Claim 2, line 1 recites “wherein one or more corrugations is arranged in”, should read – wherein one or more corrugations are arranged in –. Claim 3, lines 1-2 recite “wherein the one or more corrugations arranged in the side wall of the housing is oriented radially”, should read – wherein the one or more corrugations arranged in the side wall of the housing are oriented radially—. Claim 4, line 1 recites “wherein the one or more corrugations is shaped”, should read – wherein the one or more corrugations are shaped --. Claim 5 and claim 7, line 1 recites “wherein the one or more corrugation”, should read – wherein the one or more corrugations –. Claim 5, line 4 recites “wherein the leading area enclosing a greater angle”, should read – wherein the leading area encloses a greater angle –. Claim 6, lines 1-2 recite “wherein the one or more corrugations arranged in the outlet channel is orientated transversely”, should read – wherein the one or more corrugations arranged in the outlet channel are orientated transversely –. Appropriate correction is required. Claim Rejections - 35 USC § 102 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)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claim(s) 1-7 and 10 are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Wold et al. (US 10694678 B2). Regarding claim 1, Wold et al. teaches a blower assembly [129] for a cleaning device [126] of a combine harvester [100], comprising: a blower rotor (rotor of fan [206], see Fig. 3) configured to be rotated by a drive (see Col. 4, lines 9-15) about a rotation axis [242]; and a housing [204] enclosing the blower rotor, the housing comprising two side walls ([250]; one shown but another is inherently present on the other side of the housing, see Col. 5, lines 29-31) oriented at least approximately radially to the axis of rotation (see Fig. 6), where each of the side walls has a central air inlet opening ([208], see Col. 4, lines 9-15) arranged axially to the blower rotor (see Fig. 3); wherein the housing comprises an outer wall (see below) extending in the circumferential direction of the blower rotor; wherein the outer wall comprises at least one outlet opening (see below) to which an outlet channel [232 and 234] is arranged tangentially to the blower rotor (see Fig. 3) is connected; wherein the housing comprises at least one corrugation ([237]; the corrugations form ridges whereas the space between the corrugations forms grooves, see below) or rib. PNG media_image1.png 498 612 media_image1.png Greyscale Examiner’s Note: examiner is interpreting the term “corrugation” by the definition ‘to form or shape into wrinkles or folds or alternating ridges and grooves’ as provided by Merriam-Webster (see attached NPL for ‘corrugate’). As seen in the annotated drawing above, the corrugation of Wold et al. is material shaped outwards from the side wall of the housing, disturbing the smooth surface of the sidewall, and thereby forming alternating ridges and grooves. This configuration is similar to Applicant’s Fig. 3 in which the corrugation [88] forms the ridge and the groove is the sidewall adjacent the corrugation. Regarding claim 2, Wold et al. teaches wherein one or more corrugations [237] is arranged in a side wall ([250], see Fig. 5) of the housing [204] or a side wall (see wall of outlet channel having the corrugations in Fig. 5) of the outlet channel [232 and 234]. Regarding claim 3, Wold et al. teaches wherein the one or more corrugations [237] arranged in the side wall ([250], see Fig. 5) of the housing [204] is oriented radially (see Fig. 3) to the blower rotor (rotor of fan [206], see Fig. 3). Regarding claim 4, Wold et al. teaches wherein the one or more corrugations [237] is shaped outwards (extend outwards from housing, see Fig. 4) in relation to the housing [204]. Regarding claims 5 and 7, Wold et al. teaches wherein the one or more corrugation [237] comprises a leading area (see below) with respect to the air flow (see below), a trailing area (see below; area at the end of the corrugation) and an intermediate area (see below) extending parallel to the adjacent side wall [250] of the housing [204]; wherein the leading area enclosing a greater angle (see below; leading area is angled with the curve of the side wall and in relation to the rest of the corrugation, see Fig. 5) with the side wall than the trailing area (trailing area is not angled; therefore, the leading area encloses a greater angle). PNG media_image2.png 568 866 media_image2.png Greyscale Regarding claim 6, Wold et al. teaches wherein the one or more corrugations [237] arranged in the outlet channel [232 and 234] is oriented transversely to the longitudinal direction (see below) of the outlet channel. PNG media_image3.png 594 827 media_image3.png Greyscale Regarding claim 10, Wold et al. teaches wherein the housing [204] is formed of plastic (see Col. 4, lines 21-32). 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, 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 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. Claim(s) 8-9 and 11-20 are rejected under 35 U.S.C. 103 as being unpatentable over Wold et al. (US 10694678 B2) in view of Duquesne et al. (US 11272668 B2). Regarding claims 8, Wold et al. discloses the blower assembly as applied above, but fails to disclose wherein the at least one rib is located at an end of the outlet channel and extends between a lower wall and an upper wall of the outlet channel. Duquesne et al. discloses a similar blower assembly [200] wherein the housing [214] comprises at least one rib ([230 and 232]; see Col. 3, lines 16-22) and wherein the at least one rib is located at an end (see below) of the outlet channel [216] and extends between a lower wall (see below) and an upper wall (see below) of the outlet channel. PNG media_image4.png 440 574 media_image4.png Greyscale It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to provide the at least one rib of Duquesne et al. on the housing of Wold et al. in order for the ribs to form a throat within the outlet channel to decrease the volume of air flowing through the outlet channel while increasing the air pressure and speed (see Duquesne et al. Col. 3, lines 9-15). Regarding claims 9, Duquesne et al., of the above resultant combination, further discloses wherein the rib [230 and 232] is configured to support a lower and upper part (see above) of the outlet channel [216] against warping (prevents warping by forming a throat, maintaining the shape of the channel, see Fig. 2, Col. 2, lines 62-67 and Col. 3, lines 1-3 and lines 9-15). Regarding claim 11, Wold et al. teaches a combine harvester [100], comprising: a chassis [112]; a cleaning device [126] comprising an upper chaffer [127], a lower sieve [128], and a blower assembly [129], the blowing assembly actuating the upper chaffer and lower sieve (through the two outlet channel’s [232 and 234]); wherein, the blower assembly comprises: a blower rotor (rotor of fan [206], see Fig. 3) configured to be rotated by a drive (see Col. 4, lines 9-15) about a rotation axis [242]; and a housing [204] enclosing the blower rotor, the housing comprising side walls ([250]; one shown but another is inherently present on the other side of the housing, see Col. 5, lines 29-31) oriented at least approximately radially to the axis of rotation (see Fig. 6), where each of the side walls has a central air inlet opening ([208], see Col. 4, lines 9-15) arranged axially to the blower rotor (see Fig. 3); wherein the housing comprises an outer wall (see below) extending in the circumferential direction of the blower rotor; wherein the outer wall comprises at least one outlet opening (see below) to which an outlet channel [232 and 234] is arranged tangentially to the blower rotor (see Fig. 3) is connected; wherein the housing comprises a corrugation ([237]; the corrugation forms a ridge whereas the space between the corrugation forms a groove, see below) or rib. PNG media_image5.png 498 612 media_image5.png Greyscale But Wold et al. fails to disclose an upper sieve. Duquesne et al. discloses a similar combine harvester [20] comprising a cleaning device [38] comprising an upper sieve [44], a lower sieve [48], and a blower assembly [200], the blowing assembly actuating the upper sieve and lower sieve (actuates by two outlet channels [216 and 218], see Fig. 2). It would have been obvious to one of ordinary skill in the art before the effective filling date of the claimed invention to substitute the upper chaffer of Wold et al. with the upper sieve of Duquesne et al. since both are parts of the cleaning system separating the grain from the MOG; therefore, yielding the same predictable result. Examiner’s Note: examiner is interpreting the term “corrugation” by the definition ‘to form or shape into wrinkles or folds or alternating ridges and grooves’ as provided by Merriam-Webster (see attached NPL for ‘corrugate’). As seen in the annotated drawing above, the corrugation of Wold et al. is material shaped outwards from the side wall of the housing, disturbing the smooth surface of the sidewall, and thereby forming alternating ridges and grooves. This configuration is similar to Applicant’s Fig. 3 in which the corrugation [88] forms the ridge and the groove is the sidewall adjacent the corrugation. Regarding claims 12 and 19, Wold et al., of the above resultant combination, further discloses wherein the corrugation [237] is arranged in a side wall ([250], see Fig. 5) of the housing [204] or a side wall (see wall of outlet channel having the corrugations in Fig. 5) of the outlet channel [232 and 234]. Regarding claim 13, Wold et al., of the above resultant combination, further discloses wherein the corrugation [237] arranged in the side wall ([250], see Fig. 5) of the housing [204] is oriented radially (see Fig. 3) to the blower rotor (rotor of fan [206], see Fig. 3). Regarding claims 14 and 20, Wold et al. teaches wherein the one or more corrugation [237] comprises a leading area (see below) with respect to the air flow (see below), a trailing area (see below; area at the end of the corrugation) and an intermediate area (see below) extending parallel to the adjacent side wall [250] of the housing [204]; wherein the leading area enclosing a greater angle (see below; leading area is angled with the curve of the side wall and in relation to the rest of the corrugation, see Fig. 5) with the side wall than the trailing area (trailing area is not angled; therefore, the leading area encloses a greater angle). PNG media_image2.png 568 866 media_image2.png Greyscale Regarding claim 15, Wold et al., of the above resultant combination, further discloses wherein the corrugations [237] arranged in the outlet channel [232 and 234] is oriented transversely to the longitudinal direction (see below) of the outlet channel. PNG media_image3.png 594 827 media_image3.png Greyscale Regarding claim 16, Wold et al. discloses the blower assembly as applied above, but fails to disclose wherein the at least one rib is located at an end of the outlet channel and extends between a lower wall and an upper wall of the outlet channel. Duquesne et al. discloses a similar blower assembly [200] wherein the housing [214] comprises at least one rib ([230 and 232]; see Col. 3, lines 16-22) and wherein the at least one rib is located at an end (see below) of the outlet channel [216] and extends between a lower wall (see below) and an upper wall (see below) of the outlet channel. PNG media_image4.png 440 574 media_image4.png Greyscale It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to provide the at least one rib of Duquesne et al. on the housing of Wold et al. in order for the ribs to form a throat within the outlet channel to decrease the volume of air flowing through the outlet channel while increasing the air pressure and speed (see Duquesne et al. Col. 3, lines 9-15). Regarding claim 17, Duquesne et al., of the above resultant combination, further discloses wherein the rib [230 and 232] is configured to support a lower and upper part (see above) of the outlet channel [216] against warping (prevents warping by forming a throat, maintaining the shape of the channel, see Fig. 2, Col. 2, lines 62-67 and Col. 3, lines 1-3 and lines 9-15). Regarding claim 18, Wold et al. teaches a combine harvester [100], comprising: a chassis [112]; a cleaning device [126] comprising an upper chaffer [127], a lower sieve [128], and a blower assembly [129], the blowing assembly actuating the upper chaffer and lower sieve (through the two outlet channel’s [232 and 234]); and a drive (see Col. 4, lines 9-15); wherein, the blower assembly comprises: a blower rotor (rotor of fan [206], see Fig. 3) configured to be rotated by a drive (see Col. 4, lines 9-15) about a rotation axis [242]; and a housing [204] enclosing the blower rotor, the housing comprising side walls ([250]; one shown but another is inherently present on the other side of the housing, see Col. 5, lines 29-31) oriented at least approximately radially to the axis of rotation (see Fig. 6), where each of the side walls has a central air inlet opening ([208], see Col. 4, lines 9-15) arranged axially to the blower rotor (see Fig. 3); wherein the housing comprises an outer wall (see below) extending in the circumferential direction of the blower rotor; wherein the outer wall comprises at least one outlet opening (see below) to which an outlet channel [232 and 234] is arranged tangentially to the blower rotor (see Fig. 3) is connected; wherein the housing comprises a corrugation ([237]; the corrugation forms a ridge whereas the space between the corrugation forms a groove, see below) or rib. PNG media_image5.png 498 612 media_image5.png Greyscale But Wold et al. fails to disclose an upper sieve. Duquesne et al. discloses a similar combine harvester [20] comprising a cleaning device [38] comprising an upper sieve [44], a lower sieve [48], and a blower assembly [200], the blowing assembly actuating the upper sieve and lower sieve (actuates by two outlet channels [216 and 218], see Fig. 2). It would have been obvious to one of ordinary skill in the art before the effective filling date of the claimed invention to substitute the upper chaffer of Wold et al. with the upper sieve of Duquesne et al. since both are parts of the cleaning system separating the grain from the MOG; therefore, yielding the same predictable result Examiner’s Note: examiner is interpreting the term “corrugation” by the definition ‘to form or shape into wrinkles or folds or alternating ridges and grooves’ as provided by Merriam-Webster (see attached NPL for ‘corrugate’). As seen in the annotated drawing above, the corrugation of Wold et al. is material shaped outwards from the side wall of the housing, disturbing the smooth surface of the sidewall, and thereby forming alternating ridges and grooves. This configuration is similar to Applicant’s Fig. 3 in which the corrugation [88] forms the ridge and the groove is the sidewall adjacent the corrugation. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Please see attached PTO-892 for the full list of references. Reference US 4303079 A discloses a similar blower assembly (see Fig. 1) for a combine harvester comprising of multiple outlet channels [10’ or 10’’]. Any inquiry concerning this communication or earlier communications from the examiner should be directed to SUNNY WEBB whose telephone number is (571)272-3830. The examiner can normally be reached Monday - Friday 8:30 to 5:30 E.T.. 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, Joseph Rocca can be reached at 571-272-8971. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /SUNNY D WEBB/Examiner, Art Unit 3671 /CHRISTOPHER J SEBESTA/Supervisory Patent Examiner, Art Unit 3671
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Prosecution Timeline

Sep 03, 2024
Application Filed
Jun 23, 2026
Non-Final Rejection mailed — §102, §103 (current)

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Prosecution Projections

1-2
Expected OA Rounds
85%
Grant Probability
99%
With Interview (+20.0%)
3y 1m (~1y 3m remaining)
Median Time to Grant
Low
PTA Risk
Based on 59 resolved cases by this examiner. Grant probability derived from career allowance rate.

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