Patents by Inventor Masaaki Toda
Masaaki Toda 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: 11044226Abstract: A conversion device for interconversion of wired communication and wireless communication includes a wired IF, a wireless IF, a converter that retains a first MAC address of a communication terminal connected to the wired IF and uses the first MAC address to convert wired communication in which the communication terminal is a destination into wireless communication and convert wireless communication in which the communication terminal is a source into wired communication between the wired IF and the wireless IF, and a controller that receives a communication packet including an IP address and a second MAC address through the wireless IF, and when the second MAC address included in the received communication packet is the same as the first MAC address, sets the IP address included in the received communication packet as an IP address of the conversion device.Type: GrantFiled: December 19, 2017Date of Patent: June 22, 2021Assignee: MURATA MACHINERY, LTD.Inventors: Tetsuya Kuwahara, Eiji Sugihara, Yuya Kamitake, Masaaki Toda
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Publication number: 20190386952Abstract: A conversion device for interconversion of wired communication and wireless communication includes a wired IF, a wireless IF, a converter that retains a first MAC address of a communication terminal connected to the wired IF and uses the first MAC address to convert wired communication in which the communication terminal is a destination into wireless communication and convert wireless communication in which the communication terminal is a source into wired communication between the wired IF and the wireless IF, and a controller that receives a communication packet including an IP address and a second MAC address through the wireless IF, and when the second MAC address included in the received communication packet is the same as the first MAC address, sets the IP address included in the received communication packet as an IP address of the conversion device.Type: ApplicationFiled: December 19, 2017Publication date: December 19, 2019Inventors: Tetsuya KUWAHARA, Eiji SUGIHARA, Yuya KAMITAKE, Masaaki TODA
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Patent number: 8562219Abstract: A gap width out of the radial bearing gap is axially differed; a narrow width part which has a relatively smaller gap width in the radial bearing gap is arranged on the side relatively closer to a barycentric position of the rotating body, and a wide width part which has a relatively larger gap width in the radial bearing gap is arranged on a side relatively distant from the barycentric position of the rotating body; and a region facing at least the radial bearing gap of the bearing member is formed to an electroformed part made of deposited metal.Type: GrantFiled: June 8, 2012Date of Patent: October 22, 2013Assignee: NTN CorporationInventors: Masaharu Hori, Masaaki Toda, Kenji Hibi, Tetsuya Yamamoto
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Patent number: 8529132Abstract: Provided is a fluid dynamic bearing device in which an assembly of a bearing sleeve to a housing is facilitated and which has excellent moment rigidity. A fluid dynamic bearing device (1) includes radial bearing parts (R1 and R2) and thrust bearing parts (T1 and T2). Thrust bearing surfaces (C and D) are respectively provided to first and second step surfaces (2d and 2e) of a housing (2), and the thrust bearing parts (T1 and T2) are respectively formed between the thrust bearing surfaces (C and D) and end surfaces (6b and 7b) of seal members (6 and 7) provided while protruding to an outer diameter side of a shaft member (5).Type: GrantFiled: May 28, 2007Date of Patent: September 10, 2013Assignee: NTN CorporationInventors: Masaharu Hori, Masaaki Toda
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Patent number: 8420449Abstract: Aspects of the invention are directed to laser patterning apparatus capable of performing laser patterning on a thin film formed on a flexible substrate with a good yield and a laser patterning method thereof. The thin film formed on the flexible substrate can be patterned by laser using a laser patterning apparatus that can include a processing stage that has a reference processing surface on which the flexible substrate having the thin film formed thereon is disposed, a wrinkle removing device that is configured as a mechanism for stretching an outer periphery of a processing region of the flexible substrate so that tension is applied outward in the width direction and forward and backward in the transporting direction, and a laser scanner that scans a predetermined line of the thin film formed on the flexible substrate while emitting a laser beam thereto.Type: GrantFiled: September 16, 2011Date of Patent: April 16, 2013Assignee: Fuji Electric Co., Ltd.Inventors: Masaaki Toda, Satoshi Sawayanagi
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Publication number: 20120243813Abstract: Provided is a fluid dynamic bearing device which has excellent moment rigidity and an improved working efficiency in assembling and parts control, and in which a bearing sleeve can be easily manufactured. A plurality of bearing sleeves are axially disposed in the fluid dynamic bearing device. The bearing sleeves (3, 4) are formed with different axial lengths from each other.Type: ApplicationFiled: June 8, 2012Publication date: September 27, 2012Applicant: NTN CORPORATIONInventors: Masaharu Hori, Masaaki Toda, Kenji Hibi, Tetsuya Yamamoto
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Patent number: 8215843Abstract: A fluid dynamic bearing device includes a bearing sleeve including a radial bearing surface, a shaft member to be inserted to an inner circumference of the bearing member, and a radial bearing part for non-contact supporting the shaft member in a radial direction by a dynamic pressure action of a fluid generated in a radial bearing gap between the radial bearing surface of the bearing member and an outer circumferential surface of the shaft member. Additionally, a plurality of bearing sleeves are axially arranged, and each bearing sleeve is formed having different axial length with respect to one another.Type: GrantFiled: March 22, 2007Date of Patent: July 10, 2012Assignee: NTN CorporationInventors: Masaharu Hori, Masaaki Toda, Kenji Hibi, Tetsuya Yamamoto
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Patent number: 8177434Abstract: A fluid dynamic bearing device includes a housing injection molded with a bearing sleeve as an insert. Accordingly, the molding of the housing and the assembly of the housing and the bearing sleeve can be performed in a single step. In addition to this, by simply increasing the die precisions the housing and the bearing sleeve can be fixed easily with high precision. Since the housing is opened at both ends, it is possible to sandwich the bearing sleeve, and accordingly, the bearing sleeve can be accurately positioned inside the dies with reliability.Type: GrantFiled: February 28, 2007Date of Patent: May 15, 2012Assignee: NTN CorporationInventors: Kenji Ito, Yoshiharu Inazuka, Isao Komori, Masaharu Hori, Masaaki Toda
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Publication number: 20120070932Abstract: Aspects of the invention are directed to laser patterning apparatus capable of performing laser patterning on a thin film formed on a flexible substrate with a good yield and a laser patterning method thereof. The thin film formed on the flexible substrate can be patterned by laser using a laser patterning apparatus that can include a processing stage that has a reference processing surface on which the flexible substrate having the thin film formed thereon is disposed, a wrinkle removing device that is configured as a mechanism for stretching an outer periphery of a processing region of the flexible substrate so that tension is applied outward in the width direction and forward and backward in the transporting direction, and a laser scanner that scans a predetermined line of the thin film formed on the flexible substrate while emitting a laser beam thereto.Type: ApplicationFiled: September 16, 2011Publication date: March 22, 2012Applicant: FUJI ELECTRIC CO., LTD.Inventors: Masaaki TODA, Satoshi SAWAYANAGI
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Patent number: 8120220Abstract: To provide a fluid dynamic pressure bearing device that achieves high rigidity against moment without degradation in assembly precision and bearing performance, bearing sleeves are arranged in an axial direction and coaxiality of radial bearing surfaces formed on inner peripheral surfaces of the bearing sleeves is set to 3 ?m or less. This secures width precision between the radial bearing gaps to prevent a degradation in bearing performance and a failure such as wear etc. caused by contact between a shaft member and the bearing sleeves. Further, a first radial bearing surface and a second radial bearing surface are provided on at least one sleeve, and this allows a sleeve assembly constructed from the bearing sleeves to be supported at least three positions in the axial direction in a process of assembling the sleeve assembly.Type: GrantFiled: November 9, 2006Date of Patent: February 21, 2012Assignee: NTN CorporationInventors: Nobuyoshi Yamashita, Masaaki Toda, Kimihiko Bitou, Masaharu Hori
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Patent number: 8104964Abstract: A fluid dynamic bearing unit is provided which has a high load capacity against a moment load, whose bearing sleeves can be manufactured and fixed easily, and which can provide a required fixing power. The bearing sleeve is inserted into an inner periphery of a housing, and its bottom end is fixed to the top end of a spacer part with an adhesive. Another bearing sleeve is inserted into another part of the inner periphery of the housing, and its top end is fixed to the bottom end of the spacer part with an adhesive.Type: GrantFiled: March 19, 2007Date of Patent: January 31, 2012Assignee: NTN CorporationInventors: Masaharu Hori, Masaaki Toda, Isao Komori
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Patent number: 8016488Abstract: The fluid dynamic bearing device includes a housing, two bearing sleeves fixed to the housing at positions axially spaced apart from each other, and a shaft member inserted along inner peripheries of the bearing sleeves. The housing includes a spacer portion protruding further radially inwardly than inner peripheral surfaces to which the bearing sleeves are fixed. An axial fluid path is formed in the spacer portion, and the axial fluid path communicates to flow paths formed by axial grooves of the bearing sleeves.Type: GrantFiled: March 26, 2009Date of Patent: September 13, 2011Assignee: NTN CorporationInventors: Itsuo Murata, Masaya Soeda, Masaharu Hori, Masaaki Toda
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Publication number: 20100231074Abstract: To provide a fluid dynamic pressure bearing device that achieves high rigidity against moment without degradation in assembly precision and bearing performance, bearing sleeves are arranged in an axial direction and coaxiality of radial bearing surfaces formed on inner peripheral surfaces of the bearing sleeves is set to 3 ?m or less. This secures width precision between the radial bearing gaps to prevent a degradation in bearing performance and a failure such as wear etc. caused by contact between a shaft member and the bearing sleeves. Further, a first radial bearing surface and a second radial bearing surface are provided on at least one sleeve, and this allows a sleeve assembly constructed from the bearing sleeves to be supported at least three positions in the axial direction in a process of assembling the sleeve assembly.Type: ApplicationFiled: November 9, 2006Publication date: September 16, 2010Applicant: NTN CORPORATIONInventors: Nobuyoshi Yamashita, Masaaki Toda, Kimihiko Bitou, Masaharu Hori
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Publication number: 20100166344Abstract: Provided is a fluid dynamic bearing device in which an assembly of a bearing sleeve to a housing is facilitated and which has excellent moment rigidity. A fluid dynamic bearing device (1) includes radial bearing parts (R1 and R2) and thrust bearing parts (T1 and T2). Thrust bearing surfaces (C and D) are respectively provided to first and second step surfaces (2d and 2e) of a housing (2), and the thrust bearing parts (T1 and T2) are respectively formed between the thrust bearing surfaces (C and D) and end surfaces (6b and 7b) of seal members (6 and 7) provided while protruding to an outer diameter side of a shaft member (5).Type: ApplicationFiled: May 28, 2007Publication date: July 1, 2010Applicant: NTN CORPORATIONInventors: Masaharu Hori, Masaaki Toda
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Publication number: 20090297078Abstract: [Problems] Provided is a fluid bearing device in which bearing sleeves are positioned and fixed with respect to a housing with high accuracy. [Solving Means] To an inner periphery of a housing (7), a first bearing sleeve (8) and a second bearing sleeve (9) are fixed while being spaced apart in an axial direction. Between the bearing sleeves (8) and (9), a spacer (10) made of a resin is disposed. An axial rigidity of the spacer (10) is smaller than those of the first bearing sleeve (8) and the second bearing sleeve (9). Accordingly, in a state where the first bearing sleeve (8) and the second bearing sleeve (9) are positioned and fixed with respect to the housing (7), the spacer (10) is largely compressed in an axial direction compared to the bearing sleeves (8) and (9).Type: ApplicationFiled: December 18, 2006Publication date: December 3, 2009Applicant: NTN CORPORATIONInventors: Masaharu Hori, Masaaki Toda
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Publication number: 20090285514Abstract: Provided is a fluid dynamic bearing device which has excellent moment rigidity and an improved working efficiency in assembling and parts control, and in which a bearing sleeve can be easily manufactured. A plurality of bearing sleeves are axially disposed in the fluid dynamic bearing device. The bearing sleeves (3, 4) are formed with different axial lengths from each other.Type: ApplicationFiled: March 22, 2007Publication date: November 19, 2009Applicant: NTN CORPORATIONInventors: Masaharu Hori, Masaaki Toda, Kenji Hibi, Tetsuya Yamamoto
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Publication number: 20090190869Abstract: The fluid dynamic bearing device includes a housing, two bearing sleeves fixed to the housing at positions axially spaced apart from each other, and a shaft member inserted along inner peripheries of the bearing sleeves. The housing includes a spacer portion protruding further radially inwardly than inner peripheral surfaces to which the bearing sleeves are fixed. An axial fluid path is formed in the spacer portion, and the axial fluid path communicates to flow paths formed by axial grooves of the bearing sleeves.Type: ApplicationFiled: March 26, 2009Publication date: July 30, 2009Applicants: NIDEC CORPORATION, NTN CORPORATIONInventors: Itsuo MURATA, Masaya SOEDA, Masaharu HORI, Masaaki TODA
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Publication number: 20090136165Abstract: A fluid dynamic bearing unit is provided which has a high load capacity against a moment load, whose bearing sleeves can be manufactured and fixed easily, and which can provide a required fixing power. The bearing sleeve is inserted into an inner periphery of a housing, and its bottom end is fixed to the top end of a spacer part with an adhesive. Another bearing sleeve is inserted into another part of the inner periphery of the housing, and its top end is fixed to the bottom end of the spacer part with an adhesive.Type: ApplicationFiled: March 19, 2007Publication date: May 28, 2009Applicant: NTN CORPORATIONInventors: Masaharu Hori, Masaaki Toda, Isao Komori
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Publication number: 20090092347Abstract: A fluid dynamic bearing device capable of exercising high bearing performance is provided at low cost. A housing 7 is injection molded with a bearing sleeve 8 as an insert. Accordingly, the molding of the housing 7 and the assembly of the housing 7 and the bearing sleeve 8 can be performed in a single step. In addition to this, by simply increasing the die precisions the housing 7 and the bearing sleeve 8 can be fixed easily with high precision. Since the housing 7 is opened at both ends, it is possible to sandwich the bearing sleeve 8, and accordingly, the bearing sleeve 8 can be accurately positioned inside the dies with reliability.Type: ApplicationFiled: February 28, 2007Publication date: April 9, 2009Applicant: NTN CORPORATIONInventors: Kenji Ito, Yoshiharu Inazuka, Isao Komori, Masaharu Hori, Masaaki Toda
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Patent number: 6991443Abstract: An oil injected screw compressor has an oil separating mechanism integrated with a compressor and hence is made compact in size. A male rotor and a female rotor are received in a rotor casing. The shafts of these rotors are arranged substantially in a horizontal direction. An inner cylindrical wall is arranged under the rotor casing with its center axis arranged substantially in a vertical direction and an outer wall is arranged substantially in a concentric position with the inner wall. A lower casing is hermetically joined to the outer wall. Oil in the working gas which is injected in the compression process of the oil injected screw compressor is primarily separated from the working gas between the inner wall and the outer wall. The primarily separated working gas flows up inside the inner wall and is guided through a manifold into an oil separating element case where the oil is secondarily separated from the working gas.Type: GrantFiled: February 11, 2004Date of Patent: January 31, 2006Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Masakazu Aoki, Masahiko Takano, Masaaki Toda