Prosecution Insights
Last updated: August 15, 2026
Application No. 18/748,447

Bushing With Integrated Rotary Seal

Non-Final OA §103§112
Filed
Jun 20, 2024
Examiner
KING, BRADLEY T
Art Unit
3616
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
The Pullman Company LLC
OA Round
1 (Non-Final)
71%
Grant Probability
Favorable
1-2
OA Rounds
11m
Est. Remaining
93%
With Interview

Examiner Intelligence

Grants 71% — above average
71%
Career Allowance Rate
679 granted / 961 resolved
+18.7% vs TC avg
Strong +22% interview lift
Without
With
+22.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
44 currently pending
Career history
1004
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
38.1%
-1.9% vs TC avg
§102
28.5%
-11.5% vs TC avg
§112
30.9%
-9.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 961 resolved cases

Office Action

§103 §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 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 1-15 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 1 recites “the stepped sidewall”. There is insufficient antecedent basis for this limitation in the claim. 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. Claims 1-8 and 10-15 is/are rejected under 35 U.S.C. 103 as being unpatentable over Tanaka et al (US# 4744677) in view of Kato et al (US# 2019/0255931) or Gebert et al (US# 2834616). Tanaka et al disclose an elastomeric bushing comprising: an inner sleeve 112 including a first end face and an opposite second end face; a bearing 118/120 circumscribing the inner sleeve; an elastomer 114/116 disposed around and directly engaging the bearing, the elastomer including a first seal gland 126; an outer sleeve 110 disposed around the bearing and the elastomer, the outer sleeve being spaced apart from the inner sleeve and directly engaging the elastomer 114; a one-piece monolithic first cap 122 including an end wall 166 and a sidewall 174 surrounding a portion of the inner sleeve 112 and a portion of the bearing 118/116, the end wall 166 radially inwardly extending from the sidewall and overlapping the first end face of the inner sleeve 112, the sidewall 174 having an inner surface positioned in engagement with the first seal gland 126. Figures 23-32. Tanaka et al lack the disclosure of the sidewall being a stepped sidewall. Kato et al disclose a vibration damping device and further teach a wall formed with a step 48 to improve the deformation rigidity of the part [0060]. Gebert et al discloses a seal and further teaches a sidewall 23-25 having a stepped construction to provide a strong and rugged support for a seal (col. 5, lines 65-71). It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to form the sidewall of Tanaka et al to be stepped, as taught by Kato et al or Gebert et al to improve the rigidity of the sidewall and ensure a durable seal. Regarding claim 2, the first cap 122 and the first seal gland 126 are configured to allow relative rotary movement therebetween. Col. 12, lines 57-60. Regarding claim 3, the first cap 122 is fixed to the inner sleeve 112. Col. 12, lines 32-34. Regarding claim 4, the first seal gland includes a first circumferentially extending rib and a second circumferentially extending rib longitudinally spaced apart from the first rib. Note a rib is formed on each side of each circumferential groove 148. Regarding claim 5, the first seal gland 126 includes an annular land (either portion adjacent circumferential groove 148) in direct engagement with a portion of the stepped sidewall 174 of the first cap. Regarding claim 6, an inner surface of the stepped sidewall 174 of the first cap engages and compresses at least one of the first rib and the second rib. Col. 12, lines 46-50. Regarding claim 7, the first cap 122 is spaced apart from the bearing 118/120. Regarding claim 8, the end wall 166 of the first cap directly engages the first end face of the inner sleeve 112. Figure 23. Regarding claim 10, the inner sleeve 112 is axially translatable (at least during assembly) and rotatable relative to the bearing. Regarding claim 11, the first cap 122 limits axial travel of the inner sleeve relative to the bearing. Regarding claim 12, the outer sleeve 110 includes a radially outwardly extending flange. Figures 23 and 26. Regarding claim 13, the elastomer includes a circumferentially extending bumper bonded to the flange of the outer sleeve. Col. 11, lines 5-16. PNG media_image1.png 328 548 media_image1.png Greyscale Regarding claim 14, an inner surface of the outer sleeve 110 is bonded to the elastomer. Col. 11, lines 5-16. Regarding claim 15, the first cap 122 is press fit to the inner sleeve 112. Col. 12, lines 32-34. Claim 9 is/are rejected under 35 U.S.C. 103 as being unpatentable over Tanaka et al (US# 4744677) and Kato et al (US# 2019/0255931) or Gebert et al (US# 2834616), as applied to claim 1 above, in further view of Cerri III (US# 2018/0291975). Tanaka et al, as modified above, disclose all the limitations of the instant claim with exception to the disclosure that the bearing inner cylindrical surface includes a PTFE coating. Cerri III disclose a similar bushing assembly and further teaches a PTFE coating on an bearing inner cylindrical surface [0032]. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to use a PTFE coating, such as taught by Cerri, in the bushing of Tanaka et al to further reduce friction and/or wear, thereby improving the durability of the device. Allowable Subject Matter Claims 16-20 are allowed. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Any inquiry concerning this communication or earlier communications from the examiner should be directed to BRADLEY T KING whose telephone number is (571)272-7117. The examiner can normally be reached 10:30-5:00 PM. 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, Robert Siconolfi can be reached at 571 272-7124. 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. /BRADLEY T KING/Primary Examiner, Art Unit 3616 BTK
Read full office action

Prosecution Timeline

Jun 20, 2024
Application Filed
Jul 28, 2026
Non-Final Rejection mailed — §103, §112 (current)

Precedent Cases

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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
71%
Grant Probability
93%
With Interview (+22.4%)
3y 1m (~11m remaining)
Median Time to Grant
Low
PTA Risk
Based on 961 resolved cases by this examiner. Grant probability derived from career allowance rate.

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