Prosecution Insights
Last updated: April 19, 2026
Application No. 18/559,479

METHOD AND DEVICE FOR DETERMINING A BELT TENSION OF A MACHINE DRIVE BELT

Non-Final OA §112
Filed
Nov 07, 2023
Examiner
ZHONG, XIN Y
Art Unit
2855
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Atlas Copco Airpower, Naamloze Vennootschap
OA Round
1 (Non-Final)
76%
Grant Probability
Favorable
1-2
OA Rounds
2y 11m
To Grant
91%
With Interview

Examiner Intelligence

Grants 76% — above average
76%
Career Allow Rate
465 granted / 611 resolved
+8.1% vs TC avg
Strong +15% interview lift
Without
With
+15.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
33 currently pending
Career history
644
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
51.8%
+11.8% vs TC avg
§102
21.0%
-19.0% vs TC avg
§112
23.6%
-16.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 611 resolved cases

Office Action

§112
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 Claim 12 is objected to because of the following informalities: Line 4, “the proximity” should be “proximity”. Appropriate correction is required. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 12-21 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claim 12 recites the limitation "distribution of the values" in line 12. There is insufficient antecedent basis for this limitation in the claim. It is unclear what is the term “values” referring to. Regarding claim 13, the phrase "such as" renders the claim indefinite because it is unclear whether the limitations following the phrase are part of the claimed invention. See MPEP § 2173.05(d). The remaining claims are rejected due to their dependence. Allowable Subject Matter Claims 12-21 would be allowable if rewritten or amended to overcome the rejection(s) under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 2nd paragraph, set forth in this Office action. Regarding claim 12, Coy et al. (U.S. Publication No. 20040154413) teaches a computer-implemented method for determining a belt tension of a drive belt of a machine, based on a sound recording, wherein the drive belt is suitable for transmitting a mechanical torque, the method comprising the steps of: initiating a recording of sound in the proximity of the drive belt; recording the sound during a primary time interval comprising: a part t_b during which the drive belt is not excited; a part t_a during which the drive belt is excited one or more times; discretising the sound of the primary time interval into time samples according to a predefined sampling frequency, thereby obtaining a data set. However, Coy differs from claim 12 in that Coy does not disclose or suggest “filtering the data set based on a bandpass filter, thereby obtaining a filtered data set; determining within part t_b of the filtered dataset: a trigger threshold value indicative of a distribution of the values therein; a reference spectrum; determining an average excitation spectrum of excitation spectra of one or more secondary time intervals within part t_a of the filtered data set, a secondary time interval comprising: a value which exceeds the trigger threshold value and a root mean square of the values which exceeds a predefined factor; compensating the average excitation spectrum with the reference spectrum, thereby obtaining a compensated excitation spectrum; determining a confidence coefficient based on a highest and second highest extremum within the compensated excitation spectrum; and when the confidence coefficient exceeds a predefined value: determining the belt tension based on a frequency of the highest extremum”, in combination of with all other recited method steps in a computer-implemented method for determining a belt tension of a drive belt of a machine. Any comments considered necessary by applicant must be submitted no later than the payment of the issue fee and, to avoid processing delays, should preferably accompany the issue fee. Such submissions should be clearly labeled “Comments on Statement of Reasons for Allowance.” Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to XIN Y ZHONG whose telephone number is (571)272-3798. The examiner can normally be reached M-F 9 a.m. - 6 p.m.. 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, Kristina Deherrera can be reached at 303-297-4237. 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. /XIN Y ZHONG/Primary Examiner, Art Unit 2855
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Prosecution Timeline

Nov 07, 2023
Application Filed
Feb 26, 2026
Non-Final Rejection — §112 (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
76%
Grant Probability
91%
With Interview (+15.2%)
2y 11m
Median Time to Grant
Low
PTA Risk
Based on 611 resolved cases by this examiner. Grant probability derived from career allow rate.

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