Prosecution Insights
Last updated: April 19, 2026
Application No. 17/980,896

ELEVATOR BRAKING DEVICE AND ELEVATOR SYSTEM

Non-Final OA §102§103
Filed
Nov 04, 2022
Examiner
GLASS, ERICK DAVID
Art Unit
2846
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Otis Elevator Company
OA Round
1 (Non-Final)
89%
Grant Probability
Favorable
1-2
OA Rounds
2y 5m
To Grant
96%
With Interview

Examiner Intelligence

Grants 89% — above average
89%
Career Allow Rate
626 granted / 700 resolved
+21.4% vs TC avg
Moderate +7% lift
Without
With
+7.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 5m
Avg Prosecution
23 currently pending
Career history
723
Total Applications
across all art units

Statute-Specific Performance

§101
1.2%
-38.8% vs TC avg
§103
39.0%
-1.0% vs TC avg
§102
46.1%
+6.1% vs TC avg
§112
12.1%
-27.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 700 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 . Claim Objections Claim 16 is objected to because of the following informalities: In claim 16, line 3, “a brake disc” is claimed, it should be “the brake disc”. Brake disc was previously claim in claim 1. Appropriate correction is required. Drawings The subject matter of this application admits of illustration by a drawing to facilitate understanding of the invention. Applicant is required to furnish a drawing under 37 CFR 1.81(c). No new matter may be introduced in the required drawing. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either “Replacement Sheet” or “New Sheet” pursuant to 37 CFR 1.121(d). There is no elevator, escalator, moving walkway, traction machine or hoist machine shown in drawings. The drawings only show a single braking device centered around part of a braking disc. Detailed drawings would be necessary to understand if multiple braking devices were operated in each unit of system stated. 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)(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. Claim(s) 1-3, 8-13, 15, and 16 are rejected under 35 U.S.C. 102(a1) as being taught by Fargo (PGPUB 2009/0194370). With respect to claim 1, Fargo teaches an elevator braking device, for performing braking operations on an elevator driving device comprising a brake disc having opposite first and second sides, wherein the elevator braking device has a first state and a second state, and comprises: a body (fig. 2, 18), with its interior accommodating at least a part of the brake disc (fig. 2, 22), and a support member (fig. 2, 36) axially fixed relative to the brake disc; a guide member (fig. 2, 46) connected to the support member, wherein the body is movable relative to the brake disc along the guide member; a first friction member (fig. 2, 24 right side) and a control portion (fig. 2, 50) which are arranged inside the body and adjacent to the first side, wherein a part of the control portion is connected to the body, and the first friction member moves along the guide member under control of the control portion to be in contact with the first side to perform a braking operation in the first state, and to be out of contact with the first side in the second state (paragraph 003; contacts while engage/first state, disengage/releases contact/second state); and a second friction member (fig. 2, 24 left side) arranged inside the body and adjacent to the second side, wherein the second friction member is connected to the body and is in contact with the second side to perform a braking operation in the first state, and is out of contact with the second side when the body is moved along the guide member as the first friction member is out of contact with the first side (paragraph 003; contacts while engage/first state, disengage/releases contact/second state) in the second state. Prior Art is structurally the same and therefore brake operating method/movements are the same. With respect to claim 2, Fargo teaches wherein the control portion comprises a first force supply member (fig. 2, 42), an electromagnetic member (fig. 2, 38), a fixed member (fig. 2, 34) and a moving member (fig. 2, 26), the first force supply member and the electromagnetic member are installed on the fixed member, the fixed member is connected with the body and fixed relative thereto, the moving member is connected with the first friction member and is movably arranged between the fixed member and the brake disc along the guide member (fig. 2, spring push plate w pad against disc), and the guide member is provided with a limiting portion (fig 2, 44) for restricting a moving distance of the moving member, and wherein in the first state, the first force supply member provides an acting force to the moving member to move it towards (paragraph 0022;rod and spring are both inherently limiting) the first side, so that the first friction member is in contact with the first side and provides a reaction force to move the body towards the second side, and then the second friction member is brought to be in contact with the second side, and in the second state, the electromagnetic member provides an electromagnetic force to overcome the acting force and move the moving member towards the fixed member, so that the first friction member is out of contact with the first side, and then when the moving member moves and is restricted from moving by the limiting portion, the body is pushed in an opposite direction by the first force supply member and then the second friction member is brought out of contact with the second side (paragraph 003; springs push pad against disc, braking on shaft disc with one side compression). With respect to claim 3, Fargo teaches wherein the fixed member is detachably connected to an inner wall (fig. 2, 20) of the body, the electromagnetic member comprises one or more electromagnetic coils (fig. 2, 40), and the first force supply member comprises one or more elastic members, the elastic member including a spring (fig. 2, 42). With respect to claim 8, Fargo teaches wherein the elevator braking device further comprises a second force supply member (paragraph 0033; 42) arranged between the guide member and the body, for providing an acting force such that the body is capable of moving relative to the brake disc along the guide member. With respect to claim 9, Fargo teaches wherein the second force supply member comprises one or more elastic members that abut against the guide member and the body respectively, the elastic member including a spring (paragraph 0033; 42). With respect to claim 10, Fargo teaches wherein the body is provided with a through hole (fig. 2, 48), the guide member is arranged inside the body by passing through the through hole, and a part of the guide member and the elastic member are arranged in the through hole, and wherein an outer side (fig. 2, 32) of the body is provided with a closure member (paragraph 0033; 38) for closing the through hole and detachably connected with the body, and the elastic member abuts against the guide member, and abuts against the body via the closure member. With respect to claim 11, Fargo teaches wherein at least two guide members (fig. 2, 46, two above shaft and two below) are provided, which are evenly arranged along the circumferential direction of the first friction member. With respect to claim 12, Fargo teaches wherein a friction portion of the first friction member in contact with the first side, and a friction portion of the second friction member in contact with the second side are symmetrically arranged (fig. 2) with respect to the brake disc. With respect to claim 13, Fargo teaches wherein the second friction member is detachably connected to an inner wall (fig. 2, 20) of the body. With respect to claim 15, Fargo teaches wherein the body is integrally formed (fig. 4. 34/61 integral), and/or the support member is a support portion on the elevator driving device. With respect to claim 16, Fargo teaches elevator system, comprising: an elevator driving device (fig. 2, 16) for supplying power to drive the elevator system to operate, wherein the elevator driving device comprises a brake disc (fig. 2, 22); and an elevator braking device according to claim 1, provided to operate by being in contact or out of contact with the brake disc, so that (paragraph 003; contacts while engage-first/disengage-second) the elevator driving device is prevented from supplying power to the elevator system in the first state, and is allowed to supply power to the elevator system in the second state. 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. Claim(s) 4-7, 14, and 17 are rejected under 35 U.S.C. 103 as being unpatentable over Fargo (PGPUB 2009/0194370). With respect to claim 4, Fargo does not teach wherein the fixed member is connected to the inner wall of the body through a threaded connection, and/or the electromagnetic coil is wound on an outer wall of the fixed member. It would have been obvious to one having ordinary skill in the art at the time the invention was made to have a threaded body for easy part replacement, since it has been held to be within the general skill of a worker in the art to select a known material on the basis of its suitability for the intended use as a matter of obvious design choice. In re Leshin, 125 USPQ 416. With respect to claim 5, Fargo does not teach wherein the guide member is provided with a connecting portion located at one end of the guide member for correspondingly matching and connecting with a matching portion on the support member, the limiting portion is located between two ends of the guide member, and the moving member is restricted to move between the limiting portion and the connecting portion. It would have been obvious to one having ordinary skill in the art at the time the invention was made to where guide contains connection portion, since it has been held to be within the general skill of a worker in the art to select a known material on the basis of its suitability for the intended use as a matter of obvious design choice. In re Leshin, 125 USPQ 416. With respect to claim 6, Fargo does not teach wherein the connecting portion and the matching portion adopt a threaded connection, and the limiting portion comprises a step provided on the guide member. It would have been obvious to one having ordinary skill in the art at the time the invention was made to have a threaded body for easy part replacement, since it has been held to be within the general skill of a worker in the art to select a known material on the basis of its suitability for the intended use as a matter of obvious design choice. In re Leshin, 125 USPQ 416. With respect to claim 7, Fargo does not teach wherein the guide member is detachably connected to the support member, and/or a bushing is provided between the guide member and the body, and/or a bushing is provided between the guide member and the moving member. It would have been obvious to one having ordinary skill in the art at the time the invention was made to guide member being detachable/having bushing, since it has been held that constructing a formerly integral structure in various elements involves only routine skill in the art. Nerwin v. Erlicnrnan, 168 USPQ 177, 179. With respect to claim 14, Fargo does not teach wherein the second friction member is connected to the inner wall of the body through a threaded connection. It would have been obvious to one having ordinary skill in the art at the time the invention was made to have a threaded body for easy part replacement, since it has been held to be within the general skill of a worker in the art to select a known material on the basis of its suitability for the intended use as a matter of obvious design choice. In re Leshin, 125 USPQ 416. With respect to claim 17, Fargo teaches wherein the elevator system includes an elevator (paragraph 002), and the elevator driving device includes a traction machine (fig. 2, 16). Fargo does not teach an escalator, moving walkway or hoisting machine. It has been held that a recitation with respect to the manner in which a claimed apparatus is intended to be employed does not differentiate the claimed apparatus from a prior art apparatus satisfying the claimed structural limitations. Ex parte Masham, 2 USPQ2d 1647 (1987). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ERICK DAVID GLASS whose telephone number is (571)272-8395. The examiner can normally be reached Mon-Fri_8-5pm. 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, Eduardo Colon-Santana can be reached at 571-272-2060. 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. /ERICK D GLASS/ Primary Examiner, Art Unit 2846
Read full office action

Prosecution Timeline

Nov 04, 2022
Application Filed
Feb 10, 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
89%
Grant Probability
96%
With Interview (+7.0%)
2y 5m
Median Time to Grant
Low
PTA Risk
Based on 700 resolved cases by this examiner. Grant probability derived from career allow rate.

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