Patents by Inventor Tomomi YOKOYAMA
Tomomi YOKOYAMA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12297830Abstract: A scroll compressor includes a movable scroll, a fixed scroll having a suction passage, a suction pipe, and a suction check valve to open and close an open end of the suction pipe. The suction check valve includes a valve body, a valve seat, and a compression spring to bias the valve body toward the open end of the suction pipe. The valve body includes a first bottom portion, and a first circumferential wall extending toward the valve seat along a peripheral portion of the first bottom portion. The valve seat includes a second bottom portion, and a second circumferential wall extending toward the valve body along a peripheral portion of the second bottom portion. One of the first and second circumferential walls has an outside diameter smaller than an inside diameter of an open end of the other one of the first and second circumferential walls.Type: GrantFiled: April 26, 2024Date of Patent: May 13, 2025Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Taiga Arakane, Naoki Shimozono, Tomomi Yokoyama, Takafumi Yamamoto
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Publication number: 20240271620Abstract: A scroll compressor includes a movable scroll, a fixed scroll having a suction passage, a suction pipe, and a suction check valve to open and close an open end of the suction pipe. The suction check valve includes a valve body, a valve seat, and a compression spring to bias the valve body toward the open end of the suction pipe. The valve body includes a first bottom portion, and a first circumferential wall extending toward the valve seat along a peripheral portion of the first bottom portion. The valve seat includes a second bottom portion, and a second circumferential wall extending toward the valve body along a peripheral portion of the second bottom portion. One of the first and second circumferential walls has an outside diameter smaller than an inside diameter of an open end of the other one of the first and second circumferential walls.Type: ApplicationFiled: April 26, 2024Publication date: August 15, 2024Inventors: Taiga ARAKANE, Naoki SHIMOZONO, Tomomi YOKOYAMA, Takafumi YAMAMOTO
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Patent number: 11808499Abstract: A refrigerant replacement method for a refrigeration apparatus is intended to replace a first refrigerant charged into a refrigerant circuit of the refrigeration apparatus with a second refrigerant. The second refrigerant is used together with a refrigerating machine oil having a higher additive content by percentage than another refrigerating machine oil to be used together with the first refrigerant. The method includes: a refrigerant recovery step of recovering the first refrigerant from the refrigerant circuit; an oil charging step of additionally charging a refrigerating machine oil having a predetermined additive content by percentage into the refrigerant circuit; and a refrigerant charging step of charging the second refrigerant into the refrigerant circuit. The predetermined additive content by percentage is higher than the additive content by percentage of the refrigerating machine oil to be used together with the second refrigerant.Type: GrantFiled: July 6, 2022Date of Patent: November 7, 2023Assignee: Daikin Industries, Ltd.Inventors: Naoki Shimozono, Tomomi Yokoyama, Ryuuji Takeuchi, Masaru Tanaka
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Patent number: 11525445Abstract: A compressor assembly becomes a compressor as a result of a terminal guard being attached. The compressor assembly includes a body, and a terminal guard mounting seat attached to an outer surface of the body. The terminal guard is attachable to the terminal guard mounting seat. A compressor includes the compressor assembly and the terminal guard. The compressor can be manufactured by attaching the terminal guard mounting seat to the outer surface, administering metal spraying to at least part of the outer surface after attaching the terminal guard mounting seat, and attaching the terminal guard to the terminal guard mounting seat after the administering metal spraying.Type: GrantFiled: July 25, 2017Date of Patent: December 13, 2022Assignee: Daikin Industries, Ltd.Inventors: Naoki Shimozono, Mikio Kajiwara, Tomomi Yokoyama, Kouji Kojima, Tsuyoshi Fukunaga, Mahoba Ogawa, Yasuhiro Yamamoto
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Publication number: 20220341640Abstract: A refrigerant replacement method for a refrigeration apparatus is intended to replace a first refrigerant charged into a refrigerant circuit of the refrigeration apparatus with a second refrigerant. The second refrigerant is used together with a refrigerating machine oil having a higher additive content by percentage than another refrigerating machine oil to be used together with the first refrigerant. The method includes: a refrigerant recovery step of recovering the first refrigerant from the refrigerant circuit; an oil charging step of additionally charging a refrigerating machine oil having a predetermined additive content by percentage into the refrigerant circuit; and a refrigerant charging step of charging the second refrigerant into the refrigerant circuit. The predetermined additive content by percentage is higher than the additive content by percentage of the refrigerating machine oil to be used together with the second refrigerant.Type: ApplicationFiled: July 6, 2022Publication date: October 27, 2022Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Naoki SHIMOZONO, Tomomi YOKOYAMA, Ryuuji TAKEUCHI, Masaru TANAKA
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Patent number: 11421686Abstract: A compressor includes a casing, a compression mechanism, and a motor that drives the compression mechanism. The casing is configured to cover an internal space. The internal space includes a first space and a second space larger than the first space. The casing has a first casing part covering the first space and a second casing part covering the second space. At least one of the first space and the second space is a high-pressure space configured to contain high-pressure fluid. A metallic coating may be formed on an outer surface of at least the first casing part. Alternatively, a resin coating may be formed on an outer surface of the casing.Type: GrantFiled: July 26, 2017Date of Patent: August 23, 2022Assignee: Daikin Industries, Ltd.Inventors: Naoki Shimozono, Mikio Kajiwara, Tomomi Yokoyama, Kouji Kojima, Tsuyoshi Fukunaga, Mahoba Ogawa, Yasuhiro Yamamoto
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Publication number: 20210332818Abstract: A compressor includes a casing, a compression mechanism, and a motor that drives the compression mechanism. The casing is configured to cover an internal space. The internal space includes a first space and a second space larger than the first space. The casing has a first casing part covering the first space and a second casing part covering the second space. At least one of the first space and the second space is a high-pressure space configured to contain high-pressure fluid. A metallic coating may be formed on an outer surface of at least the first casing part. Alternatively, a resin coating may be formed on an outer surface of the casing.Type: ApplicationFiled: July 26, 2017Publication date: October 28, 2021Inventors: Naoki SHIMOZONO, Mikio KAJIWARA, Tomomi YOKOYAMA, Kouji KOJIMA, Tsuyoshi FUKUNAGA, Mahoba OGAWA, Yasuhiro YAMAMOTO
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Patent number: 11134356Abstract: A speech providing device includes a memory that stores instructions, and a processor that executes the instructions. The instructions cause the processor to perform acquiring a position of a user and a direction that the user is facing, and providing a speech corresponding to an area existing in a direction that the user is facing on the basis of the position of the user, to the user.Type: GrantFiled: April 30, 2019Date of Patent: September 28, 2021Assignees: Yamaha Corporation, Fujitsu LimitedInventors: Jun Usui, Yukio Tada, Takahiro Asano, Toru Kamiwada, Hiroki Uchida, Tomomi Yokoyama
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Patent number: 11125231Abstract: A compressor includes a casing and a metallic coating. The casing includes a low-pressure casing part covering a low-pressure space and a high-pressure casing part covering a high-pressure space. The metallic coating is formed at least on a part of an outer surface of the casing. The metallic coating includes a low-pressure part coating formed in the low-pressure casing part, a high-pressure part coating formed in the high-pressure casing part, and a welded part coating formed in a welded part. At least either the average thickness of the low-pressure part coating or the average thickness of the welded part coating is greater than the average thickness of the high-pressure part coating.Type: GrantFiled: July 26, 2017Date of Patent: September 21, 2021Assignee: Daikin Industries, Ltd.Inventors: Naoki Shimozono, Mikio Kajiwara, Tomomi Yokoyama, Kouji Kojima, Tsuyoshi Fukunaga, Mahoba Ogawa, Yasuhiro Yamamoto
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Publication number: 20210285449Abstract: A compressor assembly becomes a compressor as a result of a terminal guard being attached. The compressor assembly includes a body, and a terminal guard mounting seat attached to an outer surface of the body. The terminal guard is attachable to the terminal guard mounting seat. A compressor includes the compressor assembly and the terminal guard. The compressor can be manufactured by attaching the terminal guard mounting seat to the outer surface, administering metal spraying to at least part of the outer surface after attaching the terminal guard mounting seat, and attaching the terminal guard to the terminal guard mounting seat after the administering metal spraying.Type: ApplicationFiled: July 25, 2017Publication date: September 16, 2021Inventors: Naoki SHIMOZONO, Mikio KAJIWARA, Tomomi YOKOYAMA, Kouji KOJIMA, Tsuyoshi FUKUNAGA, Mahoba OGAWA, Yasuhiro YAMAMOTO
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Publication number: 20190338774Abstract: A compressor includes a casing and a metallic coating. The casing includes a low-pressure casing part covering a low-pressure space and a high-pressure casing part covering a high-pressure space. The metallic coating is formed at least on a part of an outer surface of the casing. The metallic coating includes a low-pressure part coating formed in the low-pressure casing part, a high-pressure part coating formed in the high-pressure casing part, and a welded part coating formed in a welded part. At least either the average thickness of the low-pressure part coating or the average thickness of the welded part coating is greater than the average thickness of the high-pressure part coating.Type: ApplicationFiled: July 26, 2017Publication date: November 7, 2019Inventors: Naoki SHIMOZONO, Mikio KAJIWARA, Tomomi YOKOYAMA, Kouji KOJIMA, Tsuyoshi FUKUNAGA, Mahoba OGAWA, Yasuhiro YAMAMOTO
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Publication number: 20190261123Abstract: A speech providing device includes a memory that stores instructions, and a processor that executes the instructions. The instructions cause the processor to perform acquiring a position of a user and a direction that the user is facing, and providing a speech corresponding to an area existing in a direction that the user is facing on the basis of the position of the user, to the user.Type: ApplicationFiled: April 30, 2019Publication date: August 22, 2019Inventors: Jun USUI, Yukio TADA, Takahiro ASANO, Toru KAMIWADA, Hiroki UCHIDA, Tomomi YOKOYAMA