Public Disclosure of Utility Model H4-51115
`
`○19 Japan Patent Office (JP)
`
`○12 Public Disclosure of Official Gazette of
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`Utility Model Application (U)
`
`○11 Utility Model Application
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`H4-51115
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`○51 Int. Cl.5
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`Identification
`Symbol
`
`Agency Reference No.
`
`H 01 F 23/00
`
` A
`
`8123-5E
`
`○43 Public Disclosure
`April 30, H4 (1992)
`
`Request for Examination: Not yet made Number of Claims 1 (Total pages)
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`○54 Name of the Device: Rotary transformer
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`○21 Application No.: H2-92260
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`○22 Date of Application: August 31, 1990
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`○72 Inventor:
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`Ike Motoharu
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`○72 Inventor:
`
`Katsunori Tanaka
`
`Hitachi Ferrite, Ltd. Tottori Plant 2
`33-12 Minamiei-cho, Tottori City, Tottori
`Prefecture
`
`Hitachi Ferrite, Ltd. Tottori Plant 2
`33-12 Minamiei-cho, Tottori City, Tottori
`Prefecture
`
`○72 Inventor:
`
`Toyohiko Murakami Hitachi Ferrite, Ltd. Tottori Plant 2
`33-12 Minamiei-cho, Tottori City, Tottori
`Prefecture
`
`○72 Inventor:
`
`Yasunori Babasaki
`
`○72 Inventor:
`
`Hiroto Iteno
`
`Hitachi Ferrite, Ltd. Tottori Plant 2
`33-12 Minamiei-cho, Tottori City, Tottori
`Prefecture
`
`Hitachi Ferrite, Ltd. Tottori Plant 2
`33-12 Minamiei-cho, Tottori City, Tottori
`Prefecture
`
`○71 Applicant:
`
`Hitachi Ferrite, Ltd.
`
`1-25-1 Hyakunin-cho, Shinjuku-ku, Tokyo
`
`Ex.1025 / IPR2022-00350 / Page 1 of 19
`APPLE INC. v. SCRAMOGE TECHNOLOGY LTD.
`
`
`
`○19 Japan Patent Office (JP)
`
`○12 Public Disclosure of Official Gazette of
`
`Utility Model Application (U)
`
`○11 Utility Model Application
`
`H4-51115
`
`○51 Int. Cl.5
`
`Identification
`Symbol
`
`Agency Reference No.
`
`H 01 F 23/00
`
` A
`
`8123-5E
`
`○43 Public Disclosure
`April 30, H4 (1992)
`
`Request for Examination: Not yet made Number of Claims 1 (Total pages)
`
`○54 Name of the Device: Rotary transformer
`
`○21 Application No.: H2-92260
`
`○22 Date of Application: August 31, 1990
`
`○72 Inventor:
`
`Ike Motoharu
`
`○72 Inventor:
`
`Katsunori Tanaka
`
`Hitachi Ferrite, Ltd. Tottori Plant 2
`33-12 Minamiei-cho, Tottori City, Tottori
`Prefecture
`
`Hitachi Ferrite, Ltd. Tottori Plant 2
`33-12 Minamiei-cho, Tottori City, Tottori
`Prefecture
`
`○72 Inventor:
`
`Toyohiko Murakami Hitachi Ferrite, Ltd. Tottori Plant 2
`33-12 Minamiei-cho, Tottori City, Tottori
`Prefecture
`
`○72 Inventor:
`
`Yasunori Babasaki
`
`○72 Inventor:
`
`Hiroto Iteno
`
`Hitachi Ferrite, Ltd. Tottori Plant 2
`33-12 Minamiei-cho, Tottori City, Tottori
`Prefecture
`
`Hitachi Ferrite, Ltd. Tottori Plant 2
`33-12 Minamiei-cho, Tottori City, Tottori
`Prefecture
`
`○71 Applicant:
`
`Hitachi Ferrite, Ltd.
`
`1-25-1 Hyakunin-cho, Shinjuku-ku, Tokyo
`
`Ex.1025 / IPR2022-00350 / Page 1 of 19
`APPLE INC. v. SCRAMOGE TECHNOLOGY LTD.
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`Specifications
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`Name of the Device:
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` Rotary transformer
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`Scope of the Utility Model Registration Request:
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`A rotary transformer which is characterized in that, in a rotary transformer in which the
`principal plane of a pair of disk-shaped ferrite cores is provided with annular coil placement
`grooves and the disk-shaped ferrite cores with coils arranged in the principal plane of the disk-
`shaped ferrite cores are arranged so that their principal planes are opposite each other, at least
`one of the aforementioned disc-shaped ferrite cores has a board mounting groove extending
`radially in the principal plane of the disc-shaped ferrite core, the board is placed in the board
`mounting groove, and the terminals of these coils are connected to the board.
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`Detailed Description of the Invention:
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`(Field of Industrial Application)
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`This invention relates to a rotary transformer used in video tape recorders and the like.
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`- 1 –
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`161
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`Public Disclosure of Utility Model H4-51115
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`Ex.1025 / IPR2022-00350 / Page 2 of 19
`APPLE INC. v. SCRAMOGE TECHNOLOGY LTD.
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`
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`Public Disclosure of Utility Model H4-51115
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`
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`(Prior Art)
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`A top view of a conventional example of a rotary transformer is shown in Fig. 3 and a rear
`view is shown in Fig. 4. In this conventional example, four coil grooves 32 are formed on the
`principal plane of the disk-shaped ferrite core 31 and coils (not shown) are placed in the
`grooves 32. The leads 34 of the coil are led out to the back side through slit grooves 33
`extending in radial directions, and the leads are connected to a flexible board 35 bonded to the
`back side. Then, a protrusion 36 extending from the flexible board 35 is used to connect the
`flexible board to an external circuit.
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`(Problem to be Solved by the Utility Model)
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`As the equipment in which rotary transformers are incorporated becomes smaller, there is
`a strong demand for smaller and thinner rotary transformers.
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`When a conventional structure of a thin type is considered, it is necessary to reduce the
`thickness of the disc-shaped ferrite core, the thickness of the flexible board, and the height of
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`- 2 –
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`162
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`Ex.1025 / IPR2022-00350 / Page 3 of 19
`APPLE INC. v. SCRAMOGE TECHNOLOGY LTD.
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`Public Disclosure of Utility Model H4-51115
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`the soldering process for the leads. The principle way to try to make a thinner profile is to
`reduce the thickness of the disc-shaped ferrite cores. However, due the problem of strength,
`there were limits to how thin the disc-shaped ferrite cores can be made.
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`A design with a stepped surface on the part of the back side of the disc-shaped ferrite core
`to which the flexible board is bonded has also been proposed, but the thickness of the stepped
`surface is extremely thin and there was a strength problem with it.
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`In view of the above facts, the purpose of this utility model is to provide a rotary
`transformer with a new structure that can achieve the thinning.
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`(Means of Solving the Problem)
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`This utility model describes a rotary transformer in which a pair of disk-shaped ferrite cores
`having annular coil placement grooves are formed on a principal plane of the disk-shaped
`ferrite cores which are arranged so that their principal planes are opposite each other and
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`- 3 –
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`163
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`Ex.1025 / IPR2022-00350 / Page 4 of 19
`APPLE INC. v. SCRAMOGE TECHNOLOGY LTD.
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`
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`Public Disclosure of Utility Model H4-51115
`
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`concentric coils are installed in the coil placement grooves. At least one of said pair of disc-
`shaped ferrite cores has a board mounting structure which extends in a radial direction of the
`principal planes of said disc-shaped ferrite cores, a board is placed on said board mounting
`structure, and the terminals of said coils are connected to said board. The board is placed on
`the board mounting structure and the terminals of the coils are connected to the board.
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`(Implementation Example)
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`A top view of an example is shown in Fig. 1, and an enlarged cross-sectional view is shown
`in Fig. 2. In this example, four coil placement grooves are formed on the principal plane of the
`disc-shaped ferrite core 1, and coils are placed in these grooves. The coils are made of a
`conductive wire material wound in a spiral shape. In the principal plane of the disc-shaped
`ferrite core 1, a board mounting groove 5 is formed extending in the radial direction, and a
`flexible board 4 is attached to this board mounting groove 5. Then, the leads 3 of the coils are
`soldered to the connecting leads on the flexible board 4 in the board mounting groove 5 of the
`core 1.
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`- 4 –
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`164
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`Ex.1025 / IPR2022-00350 / Page 5 of 19
`APPLE INC. v. SCRAMOGE TECHNOLOGY LTD.
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`Public Disclosure of Utility Model H4-51115
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`According to this example, the slits where the coil leads were conventionally led out is
`changed to a board mounting groove where the board is mounted, and the coil leads are
`connected to the board, thereby achieving a thinner profile. The depth of the board mounting
`groove is determined by considering the thickness of the board and the thickness when the coil
`leads are connected and fixed.
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`In addition, in this example of this utility model, the back sides of the cores are not bonded
`to boards, etc., so the dimensional accuracy of the back side of the core is higher and the
`manageability is improved.
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`The board mounting groove and the board in this utility model are not limited to those
`shown in the above example; other shapes and structures are also acceptable.
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`(Effectiveness of the Utility Model)
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`According to this utility model, the slits in which the coil leads used to be led out are
`changed to a board mounting groove in which the board is mounted, and the coil leads are
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`- 5 –
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`165
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`Ex.1025 / IPR2022-00350 / Page 6 of 19
`APPLE INC. v. SCRAMOGE TECHNOLOGY LTD.
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`Public Disclosure of Utility Model H4-51115
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`connected to it, thereby achieving a thinner rotary transformer.
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`Brief Description of the Figures
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`Fig. 1 is a top view of an example of this conception, Fig. 2 is an enlarged cross-sectional
`view of an example of this conception, Fig. 3 is a top view of a conventional example, and Fig. 4
`is a rear view of Fig. 3.
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`1 . . .Disc-shaped ferrite core, 2 . . . grooves for coil placement, 3 … coil leads, 4 … flexible
`base plate, 5 ... board mounting groove.
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`Applicant
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` Hitachi Ferrite, Ltd. [seal of the company]
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`- 6 –
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`166
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`Ex.1025 / IPR2022-00350 / Page 7 of 19
`APPLE INC. v. SCRAMOGE TECHNOLOGY LTD.
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`Fig. 1
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`Fig. 2
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`Applicant
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` Hitachi Ferrite, Ltd. [seal of the company]
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`167
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`Utility Model 4 51115
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`Ex.1025 / IPR2022-00350 / Page 8 of 19
`APPLE INC. v. SCRAMOGE TECHNOLOGY LTD.
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`Public Disclosure of Utility Model H4-51115
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`Fig. 3
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`Fig. 4
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`Applicant
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` Hitachi Ferrite, Ltd. [seal of the company]
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` 168 Utility Model 4 51115
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`Ex.1025 / IPR2022-00350 / Page 9 of 19
`APPLE INC. v. SCRAMOGE TECHNOLOGY LTD.
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`Ex.1025 / IPR2022-00350 / Page 10 of 19
`APPLE INC. v. SCRAMOGE TECHNOLOGY LTD.
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`Ex.1025 / IPR2022-00350 / Page 11 of 19
`APPLE INC. v. SCRAMOGE TECHNOLOGY LTD.
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`Ex.1025 / IPR2022-00350 / Page 12 of 19
`APPLE INC. v. SCRAMOGE TECHNOLOGY LTD.
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`Ex.1025 / IPR2022-00350 / Page 13 of 19
`APPLE INC. v. SCRAMOGE TECHNOLOGY LTD.
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`Ex.1025 / IPR2022-00350 / Page 14 of 19
`APPLE INC. v. SCRAMOGE TECHNOLOGY LTD.
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`Ex.1025 / IPR2022-00350 / Page 15 of 19
`APPLE INC. v. SCRAMOGE TECHNOLOGY LTD.
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`Ex.1025 / IPR2022-00350 / Page 16 of 19
`APPLE INC. v. SCRAMOGE TECHNOLOGY LTD.
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`Ex.1025 / IPR2022-00350 / Page 17 of 19
`APPLE INC. v. SCRAMOGE TECHNOLOGY LTD.
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`Ex.1025 / IPR2022-00350 / Page 18 of 19
`APPLE INC. v. SCRAMOGE TECHNOLOGY LTD.
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`Certification of Accuracy of Translation
`
`Sun IP Project # 22-4809
`
`Name: Jon Johanning
`
`Address: 2203 Spruce St., Philadelphia, PA 19103
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`Telephone: 610-574-6439
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`I, Jon Johanning, hereby declare that I am a professional translator, with over years of professional
`experience, and am knowledgeable and well acquainted with the Japanese language and English
`language.
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`The document “JPH0451115U (original)” in the Japanese language attached hereto is to the best of my
`ability, knowledge, and expertise, the correct English translation of the original document written in the
`Japanese language.
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`I translated the original document into the English language. I declare that all statements made herein
`on my own knowledge are true and that all statements made on information and belief are believed to
`be true, and further, that these statements were made with the knowledge that willful false statements
`and the like so made are punishable by fine or imprisonment, or both, under Section 1001 or Title 18 of
`the United States Code.
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`_________________________________________
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`Jon Johanning
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`Signed in Philadelphia, PA on November 24,2022
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`Ex.1025 / IPR2022-00350 / Page 19 of 19
`APPLE INC. v. SCRAMOGE TECHNOLOGY LTD.
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