Prosecution Insights
Last updated: April 19, 2026
Application No. 18/361,269

Reversible Ratchet Mechanism

Final Rejection §103
Filed
Jul 28, 2023
Examiner
SHAKERI, HADI
Art Unit
3723
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Milwaukee Electric Tool Corporation
OA Round
2 (Final)
62%
Grant Probability
Moderate
3-4
OA Rounds
2y 10m
To Grant
99%
With Interview

Examiner Intelligence

Grants 62% of resolved cases
62%
Career Allow Rate
1119 granted / 1808 resolved
-8.1% vs TC avg
Strong +37% interview lift
Without
With
+37.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
67 currently pending
Career history
1875
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
46.0%
+6.0% vs TC avg
§102
26.2%
-13.8% vs TC avg
§112
19.7%
-20.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1808 resolved cases

Office Action

§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 Rejections - 35 USC § 103 The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. Claims 1, 2, 7, 8 and 16-19 are finally rejected under 35 U.S.C. 103 as being unpatentable over Hu (2003/0070512) in view of Hsieh (6,216,563). PNG media_image1.png 743 480 media_image1.png Greyscale [AltContent: arrow][AltContent: textbox (OUTER SIDE SURFACE)]Hu discloses known prior art ratcheting wrenches including a conventional wrench Figs. 16 ,17 that meets all of the limitations of claim 1, i.e., a ratcheting wrench comprising: a body 21’ extending along a longitudinal axis, the body comprising a first outer side surface annotated here and a second outer side surface opposite the first outer side surface; a head 20’ coupled to the body; a workpiece engagement structure driving post 30’, 33’ coupled to the head; a ratchet mechanism 40’-43’ supported by the head, the ratchet mechanism comprising: a gear 30’ coupled to the workpiece engagement structure driving post, the gear including a plurality of gear teeth 33’; a first pawl 40’ including a plurality of pawl teeth 41’ configured to engage the gear teeth of the gear; a second pawl 40’ including a plurality of pawl teeth 41’ configured to engage the gear teeth of the gear; and a first biasing component 43’ extending between and engaging the first pawl and the second pawl Fig. 16; and a switching assembly positioned within the body, the switching assembly comprising: an elongate switch 50’ comprising a first end @50’ and a second end @51’ opposite the first end; a second biasing component 61’; and a ball 62’ positioned between the elongate switch 50’ @top and the second biasing component 61’ @bottom and engaging the elongate switch and the second biasing component Fig. 17, [0006]; wherein the elongate switch is translationally movable between a first driving position @ one of recesses 53’ in which the first pawl is engaged with the gear and the second pawl is disengaged from the gear by the elongate switch paragraph [0006] and a second driving position in which the second pawl is engaged with the gear and the first pawl is disengaged from the gear by the elongate switch [0006], Fig. 16, 17, except for wherein, when the elongate switch is in the first driving position, the first end is recessed relative to the first outer side surface of the body and the second end extends beyond the second outer side surface of the body. PNG media_image3.png 490 305 media_image3.png Greyscale Hsieh teaches a ratcheting wrench with a sliding switch 40 having terminal ends wherein, when the elongate switch is in the first driving position, a first end RT, Fig. 5 is recessed relative to the first outer side surface of the body and the second end extends beyond the second outer side surface of the body. It would have been obvious to one of ordinary skill in the art, before the effective date of the invention, to modify the invention of Hu with a recessed sliding switch as suggested by Hsieh for a visual indication of the driving direction. Regarding claim 2, PA (prior art, Hu modified by Hsieh) meets the limitations, i.e., the ratcheting wrench of claim 1, wherein the first biasing component has a first spring constant, and the second biasing component has a second spring constant. Regarding claim 7, PA meets the limitations, i.e., the ratcheting wrench of claim 1, wherein, when the elongate switch 50’ disengages the first pawl 40’ and the second pawl 40’ from the gear, the first pawl 40’ and the second pawl move in a nonpivoting manner sliding pawls Fig. 16, paragraph [0006]. Regarding claim 8, PA meets the limitations, i.e., the ratcheting wrench of claim 1, wherein the elongate switch 50’ is a linear switch extending through the body @least partially at top in a transverse direction to the longitudinal axis Fig. 16. CLAIM 16 Hu in Figs. 16 ,17 discloses a conventional wrench meeting all of the limitations of claim 16, i.e., a reversible driving tool comprising: a body 21’ extending along a longitudinal axis defined by the handle, the body comprising a first outer side and a s seconds outer side opposite the first outer side surface annotated above a head 20’ coupled to the body; PNG media_image4.png 656 378 media_image4.png Greyscale [AltContent: arrow][AltContent: textbox (OUTER SIDE SURFACE)]a workpiece engagement structure driving post 30’, 33’ coupled to the head; a ratchet mechanism 40’-43’ supported by the head and coupled to the workpiece engagement structure Fig. 17, the ratchet mechanism comprising: a gear 30’ including a plurality of gear teeth 33’; a first pawl 40’ including a plurality of pawl teeth 41’ configured to engage the gear teeth of the gear; a second pawl 40’ including a plurality of pawl teeth 41’ configured to engage the gear teeth of the gear; and a first biasing component 43’ extending between and engaging the first pawl and the second pawl Fig. 16; and a switching assembly positioned within the body, the switching assembly comprising: an switch 50’ configured to engage with the first pawl 40’ and the second pawl 40’ to selectively move the first pawl and the second pawl into and out of engagement with the gear 30’, the switch 50’ including a first end @50’ and a second end @51’ opposite the first end a downward facing structure defined by the bottom surface 50’, Fig. 17 including a first recess 53’ (LF of center natural recess) and a second recess 53’ (RT of center recess); a second biasing component 61’; and a ball 62’ positioned between the switch 50’ and the second biasing component 61’ such that the ball engages the downward facing surface of switch and the second biasing component Fig. 17, [0006]; wherein the switch is translationally movable within a passageway 24’ extending through the body in a direction transverse to the longitudinal axis Fig. 16, and wherein the switch 50’ is moveable between a first driving position e.g., at forward recess 53’ in which the first pawl is engaged with the gear 30’ and a second driving position e.g., at rearward recess 53’ in which the second pawl is engaged with the gear [0006], Fig. 16, 17, except for wherein, when the elongate switch is in the first driving position, the first end is recessed relative to the first outer side surface of the body and the second end extends beyond the second outer side surface of the body. PNG media_image3.png 490 305 media_image3.png Greyscale Hsieh teaches a ratcheting wrench with a sliding switch 40 having terminal ends wherein, when the elongate switch is in the first driving position, a first end RT, Fig. 5 is recessed relative to the first outer side surface of the body and the second end extends beyond the second outer side surface of the body. It would have been obvious to one of ordinary skill in the art, before the effective date of the invention, to modify the invention of Hu with a recessed sliding switch as suggested by Hsieh for a visual sign of the driving direction. PNG media_image6.png 321 519 media_image6.png Greyscale Regarding claims 17-19, PA (prior art, Hu modified by Hsieh) meets the limitations, i.e., functional/narrative language of the reversible driving tool of claim 16, wherein, when the switch 50’ is in the first driving position ball 62’ engaged with one of the two recesses 53’, the second biasing component 61’ applies a locking force on the ball such that the ball engages the first recess of the switch Fig. 17, the ball resists movement of the switch such that the switch is secured relative to the body of the reversible driving tool Fig. 17, [0006]; the reversible driving tool of claim 16, wherein, when the switch is in the second driving position ball 62’ engaged with the other one of the two recesses 53’, the second biasing component applies a locking force on the ball such that the ball engages the second recess of the switch, the ball resists movement of the switch such that the switch is secured relative to the body of the reversible driving tool Fig. 17, [0006]; the reversible driving tool of claim 17, wherein, when a force greater than the locking force is applied to the switch, the second biasing component is compressed within the body such that the switch is translatable within the passageway selecting between positions. Claims 3, 4 and 20 are finally rejected under 35 U.S.C. 103 as being unpatentable over PA as applied to claims 2 and 16 above, further in view of Thompson et al. (2010/0024607 “Thompson”) and Hopper et al. (2008/0229889 “Hopper). PA (prior art, Hu modified by Hsieh) as applied to claims 2 and 16 above, meets all of the limitations of claims, 3, 4 and 20, except for the first spring constant to be less than the second spring constant. PNG media_image7.png 253 197 media_image7.png Greyscale PNG media_image8.png 198 192 media_image8.png Greyscale Thompson teaches a spring 66 placed between pawls 64 with a relatively low spring constant or a “light” spring 05:45, Fig. 2 partially shown here and Hopper teaches that ball detent 156/112 utilized for securing the switch in a selected position needs to be strong enough to locate the ball yet not too strong to wear the ball or the detent Fig. 2 partially shown here. It would have been obvious to one of ordinary skill in the art, before the effective date of the invention, to modify the invention of PA with a weaker pawl spring to provide a smooth ratcheting function as suggested by Thompson, and a relatively stronger positioning spring as taught by Hopper to provide a clear tactile indication while securely position and hold the switch in a selected position. Claims 5 and 6 are finally rejected under 35 U.S.C. 103 as being unpatentable over PA as applied to claim 1 above, further in view of Hu (7,975,574 “Hu`574”). PA (prior art, Hu modified by Hsieh) as applied to claim 1 above, meets all of the limitations of claims, 5 and 6, except for explicitly disclosing for a length of the first biasing component to be greater than that of the second biasing component. PNG media_image11.png 520 363 media_image11.png Greyscale Hu`574 teaches a switching assembly for a ratchet wrench having a pawl spring 33 between first and second pawls 31, 32 and a switch 41 linearly translatable between first and second driving positions selected by a biasing component 42 with a positioning spring 421 engaged in a selected corresponding first and second recesses 131, 133, wherein the first spring 33 is longer than the second spring 421, Fig. 2. It would have been obvious to one of ordinary skill in the art, before the effective date of the invention, to modify the invention of Hu and Hsieh with a pawl spring longer than the positioning spring as taught by Hu`574 to prevent jamming by providing an adequate distance between pawls and to prevent weaking the passageway 24’ with a relatively shorter bore 25’. Claims 9-14 are finally rejected under 35 U.S.C. 103 as being unpatentable over Hu (2003/0070512) in view of Thompson et al. (9,709,141 “Thompson”) and Hsieh. Hu in Figs. 16 ,17 discloses a conventional wrench meeting all of the limitations of claim 9, i.e., a ratcheting tool comprising: a body 21’ extending along a longitudinal axis defined by the handle; a head 20’ coupled to the body; PNG media_image1.png 743 480 media_image1.png Greyscale a workpiece engagement structure driving post 30’, 33’ coupled to the head; a ratchet mechanism 40’-43’ supported by the head and coupled to the workpiece engagement structure Fig. 17, the ratchet mechanism comprising: a gear 30’ including a plurality of gear teeth 33’; a first pawl 40’ comprising: a plurality of pawl teeth 41’ configured to engage the gear teeth of the gear Figs. 16, 17, [0006]; a first post 42’ having an outer surface; a second pawl 40’, Fig. 16 comprising: a plurality of pawl teeth 41’ configured to engage the gear teeth of the gear; a second post 42’ having an outer surface Fig. 16; a pawl biasing component 43’ extending between and engaging the first pawl and the second pawl Fig. 16; and a switching assembly positioned within the body, the switching assembly comprising: a switch 50’ comprising: a first end @50’; a second end opposite the first end @51’; a pair of arms 52’ extending toward the gear Fig. 17, and positioned between the first end and the second end, the pair of arms configured to engage with the first pawl and the second pawl to selectably move the first pawl and the second pawl into and out of engagement with the gear Figs. 16, 17, [0006]; a switch biasing component 61’; and a ball 62’ positioned between the switch 50’ and the switch biasing component 61’ and engaging the switch 50’ and the switch biasing component Fig. 17, [0006]; wherein the switching assembly is configured to move the ratchet mechanism between a first drive position and a second drive position [0006], Fig. 16, 17 except for a first and second inward facing surfaces facing the corresponding first and second post; a first channel defined between the first inward facing surface and the first post and a second channel defined between the second inward facing surface and the second post, wherein, when the ratchet mechanism is in the second drive position, the first end of the switch extends past an exterior surface of the body. PNG media_image3.png 490 305 media_image3.png Greyscale Hsieh teaches a ratcheting wrench with a sliding switch 3 having terminal ends wherein, when the elongate switch is in the second driving position, the first end LF, Fig. 5 extends out relative to the first outer side surface of the body and the second end is recessed relative to the second outer side surface of the body. It would have been obvious to one of ordinary skill in the art, before the effective date of the invention, to modify the invention of Hu with a recessed sliding switch as suggested by Hsieh for a visual indication of the driving direction. PNG media_image12.png 346 507 media_image12.png Greyscale Thompson teaches a ratchet wrench and a pawl mechanism comprising a first pawl 104 including a plurality of pawl teeth 120 configured to engage the gear teeth of the gear Fig. 1, a first post 110 having an outer surface, a first inward facing surface defined by valley 116 facing the first post 110, Fig. 3; and a first channel 116 defined between the first inward facing surface and the first post Fig. 3; a second pawl 106 comprising a plurality of pawl teeth 122 configured to engage the gear teeth of the gear Fig. 1; a second post 112 having an outer surface Fig. 3, a second inward facing surface facing the second post defined by valley 118; and a second channel 118 defined between the second inward facing surface and the second post Fig. 3. PNG media_image13.png 399 480 media_image13.png Greyscale It would have been obvious to one of ordinary skill in the art, before the effective date of the invention, to modify the invention of Hu and Hsieh with a pawl mechanism as taught by Thompson to prevent or reduce the possibility of a pawl spring being over-compressed 25’. Regarding claims 10 and 11, PA (prior art, Hu modified by Thompson) meets the limitations, i.e., meeting the functional/narrative language of the ratcheting tool of claim 9, wherein, when, the ratchet mechanism is in the first drive position selected 53’, Hu, one corresponding of the pair of arms is positioned in the first channel and spaced from the first post as the first pawl is engaged with the gear [0006] Hu, Fig. 1 Thompson; the ratcheting tool of claim 9, wherein, when, the ratchet mechanism is in the first drive position, the one of the pair of arms is positioned in the second channel and engaged with the second post to move the second pawl into a position disengaged from the gear Fig. 1 Thompson. Regarding claim 12, PA meets the limitations, i.e., the ratcheting tool of claim 9, the switch 53’ Hu further comprising a bottom surface Fig. 17 including a first recess and a second recess Fig. 16. Regarding claims 13 and 14, PA meets the limitations, i.e., the ratcheting tool of claim 12, wherein, when the switch is in the first drive position, the switch biasing component presses the ball into the first recess of the switch such that the switch resists translating motion Fig. 17 Hu, Fig. 1 Thompson; the ratcheting tool of claim 12, wherein, when the switch is in the second drive position, the switch biasing component presses the ball into the second recess of the switch such that the switch resists translating motion Fig. 17 Hu, Fig. 1 Thompson. Claim 15 is finally rejected under 35 U.S.C. 103 as being unpatentable over PA as applied to claim 9 above, and further in view of Thompson et al. (2010/0024607 “Thompson`607”) and Hopper et al. (2008/0229889 “Hopper). PA (prior art, Hu modified by Hsieh and Thompson) as applied to claim 9 above, meets all of the limitations of claim, 15, except for the first spring constant to be less than the second spring constant. PNG media_image7.png 253 197 media_image7.png Greyscale PNG media_image8.png 198 192 media_image8.png Greyscale Thompson`607 teaches a spring 66 placed between pawls 64 with a relatively low spring constant or a “light” spring 05:45, Fig. 2 partially shown here and Hopper teaches that ball detent 156/112 utilized for securing the switch in a selected position needs to be strong enough to locate the ball yet not too strong to wear the ball or the detent Fig. 2 partially shown here. It would have been obvious to one of ordinary skill in the art, before the effective date of the invention, to modify the invention of PA with a weaker pawl spring to provide a smooth ratcheting function as suggested by Thompson, and a relatively stronger positioning spring as taught by Hopper to provide a clear tactile indication while securely position and hold the switch in a selected position. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Response to Arguments Applicant’s arguments with respect to claim(s) 1, 9 and 16 have been considered but are moot because the new feature recited in taught by Hsieh, in the new grounds of rejection applied. Any inquiry concerning this communication or earlier communications from the examiner should be directed to HADI SHAKERI whose telephone number is (571)272-4495. The fax phone number for forwarding unofficial documents for discussion purposes only is (571) 273-4495. The examiner can normally be reached on M-F. 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, Brian Keller can be reached on 571 272 8548. The fax 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. /Hadi Shakeri/ March 21, 2026 Primary Examiner, Art Unit 3723
Read full office action

Prosecution Timeline

Jul 28, 2023
Application Filed
Sep 05, 2025
Non-Final Rejection — §103
Dec 08, 2025
Response Filed
Mar 21, 2026
Final Rejection — §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

3-4
Expected OA Rounds
62%
Grant Probability
99%
With Interview (+37.3%)
2y 10m
Median Time to Grant
Moderate
PTA Risk
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