Patents by Inventor Kenji Orito
Kenji Orito 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: 11248654Abstract: On an inner peripheral surface of a bearing hole into which a shaft is inserted, concave oil supply surfaces arranged dispersively like separated islands and a sliding surface continuous around the oil supply surfaces to hold an outer peripheral surface of the shaft are formed: a maximum height difference between the sliding surface and the oil supply surfaces is not less than 0.01% and not more than 0.5% of an inner diameter Di of the sliding surface; a surface aperture area ratio of pores at the sliding surface is not more than 10%; a surface aperture area ratio of pores at the oil supply surfaces is more than 10% and less than 40%; and an area of each of the oil supply surfaces is not less than 0.03 mm2 and not more than 0.2×Di2 (mm2).Type: GrantFiled: November 14, 2018Date of Patent: February 15, 2022Assignees: MITSUBISHI MATERIALS CORPORATION, DIAMET CORPORATIONInventors: Hajime Kouno, Yoshinari Ishii, Tsuneo Maruyama, Jyun Katou, Kenji Orito
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Patent number: 11073178Abstract: An oil-impregnated sintered bearing comprises a bearing hole. In the bearing, sliding surfaces supporting an outer circumferential surface of a shaft and an oil supply surface whose diameter is larger than that of the sliding surfaces are formed on an inner circumferential surface of the bearing hole into which the shaft is inserted. The sliding surfaces and the oil supply surfaces are adjacent to each other in the axial direction of the bearing hole. A height gap “d1” between the sliding surfaces and the oil supply surface is not less than 0.01% and not more than 15% of an inner diameter of the sliding surfaces. A surface opening percentage of the sliding surfaces is not higher than 10%. A surface opening percentage of the oil supply surface is higher than 10%. An average circle-equivalent diameter of opening parts of pores on the sliding surfaces is not larger than 20 ?m.Type: GrantFiled: December 20, 2017Date of Patent: July 27, 2021Assignee: DIAMET CORPORATIONInventors: Hajime Kouno, Yoshinari Ishii, Tsuneo Maruyama, Jyun Katou, Kenji Orito
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Publication number: 20200325934Abstract: On an inner peripheral surface of a bearing hole into which a shaft is inserted, concave oil supply surfaces arranged dispersively like separated islands and a sliding surface continuous around the oil supply surfaces to hold an outer peripheral surface of the shaft are formed: a maximum height difference between the sliding surface and the oil supply surfaces is not less than 0.01% and not more than 0.5% of an inner diameter Di of the sliding surface; a surface aperture area ratio of pores at the sliding surface is not more than 10%; a surface aperture area ratio of pores at the oil supply surfaces is more than 10% and less than 40%; and an area of each of the oil supply surfaces is not less than 0.03 mm2 and not more than 0.2×Di2 (mm2).Type: ApplicationFiled: November 14, 2018Publication date: October 15, 2020Applicants: MITSUBISHI MATERIALS CORPORATION, DIAMET CORPORATIONInventors: Hajime Kouno, Yoshinari Ishii, Tsuneo Maruyama, Jyun Katou, Kenji Orito
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Publication number: 20190360528Abstract: In order to supply sufficient amount of oil to one or more sliding surfaces and to prevent the supplied oil from moving from the sliding surface(s) to an inside so as to achieve lower friction and improve sliding performance of a bearing, in an oil-impregnated sintered bearing 1, sliding surfaces 3 supporting an outer circumferential surface of a shaft 11 and an oil supply surface 4 in which a diameter is larger than that of the sliding surfaces 3 are formed on an inner circumferential surface of a bearing hole 2 into which the shaft 11 is inserted, to be adjacent in an axial direction of the bearing hole 2, a height gap “d1” between the sliding surfaces 3 and the oil supply surface 4 is not less than 0.Type: ApplicationFiled: December 20, 2017Publication date: November 28, 2019Applicants: MITSUBISHI MATERIALS CORPORATION, DIAMET CORPORATIONInventors: Hajime Kouno, Yoshinari Ishii, Tsuneo Maruyama, Jyun Katou, Kenji Orito
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Patent number: 9815116Abstract: This method for producing porous sintered aluminum includes: mixing aluminum powder with a sintering aid powder containing titanium to obtain a raw aluminum mixed powder; mixing the raw aluminum mixed powder with a water-soluble resin binder, water, and a plasticizer containing at least one selected from polyhydric alcohols, ethers, and esters to obtain a viscous composition; drying the viscous composition in a state where air bubbles are mixed therein to obtain a formed object prior to sintering; and heating the formed object prior to sintering in a non-oxidizing atmosphere, wherein when a temperature at which the raw aluminum mixed powder starts to melt is expressed as Tm (° C.), a temperature T (° C.) of the heating fulfills Tm?10 (° C.)?T?685 (° C.).Type: GrantFiled: November 24, 2014Date of Patent: November 14, 2017Assignee: MITSUBISHI MATERIALS CORPORATIONInventors: Koji Hoshino, Ji-bin Yang, Kenji Orito, Shinichi Ohmori
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Patent number: 9589732Abstract: This method for producing porous sintered aluminum includes: mixing aluminum powder with a sintering aid powder containing a sintering aid element to obtain a raw aluminum mixed powder; forming the raw aluminum mixed powder into a formed object prior to sintering having pores; and heating the formed object prior to sintering in a non-oxidizing atmosphere to produce porous sintered aluminum, wherein the sintering aid element is titanium, and when a temperature at which the raw aluminum mixed powder starts to melt is expressed as Tm (° C.), then a temperature T (° C.) of the heating fulfills Tm-10 (° C.)?T?685 (° C.).Type: GrantFiled: March 30, 2010Date of Patent: March 7, 2017Assignee: MITSUBISHI MATERIALS CORPORATIONInventors: Koji Hoshino, Ji-bin Yang, Kenji Orito, Shinichi Ohmori
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Patent number: 9242297Abstract: This method for producing porous sintered aluminum includes: mixing aluminum powder with a sintering aid powder containing titanium to obtain a raw aluminum mixed powder; mixing the raw aluminum mixed powder with a water-soluble resin binder, water, and a plasticizer containing at least one selected from polyhydric alcohols, ethers, and esters to obtain a viscous composition; drying the viscous composition in a state where air bubbles are mixed therein to obtain a formed object prior to sintering; and heating the formed object prior to sintering in a non-oxidizing atmosphere, wherein when a temperature at which the raw aluminum mixed powder starts to melt is expressed as Tm (° C.), a temperature T (° C.) of the heating fulfills Tm?10 (° C.)?T?685 (° C.).Type: GrantFiled: March 30, 2010Date of Patent: January 26, 2016Assignee: MITSUBISHI MATERIALS CORPORATIONInventors: Koji Hoshino, Ji-bin Yang, Kenji Orito, Shinichi Ohmori
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Publication number: 20150078949Abstract: This method for producing porous sintered aluminum Includes: mixing aluminum powder with a sintering aid powder containing titanium to obtain a raw aluminum mixed powder; mixing the raw aluminum mixed powder with a water-soluble resin binder, water, and a plasticizer containing at least one selected from polyhydric alcohols, ethers, and esters to obtain a viscous composition; drying the viscous composition in a state where air bubbles are mixed therein to obtain a formed object prior to sintering; and heating the formed object prior to sintering in a non-oxidizing atmosphere, wherein when a temperature at which the raw aluminum mixed powder starts to melt is expressed as Tm (° C.), a temperature T (° C.) of the heating fulfills Tm?10 (° C.)?T?685 (° C.Type: ApplicationFiled: November 24, 2014Publication date: March 19, 2015Inventors: Koji Hoshino, Ji-bin Yang, Kenji Orito, Shinichi Ohmori
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Patent number: 8691328Abstract: This method for producing an aluminum composite including porous sintered aluminum, includes: mixing aluminum powder with a sintering aid powder containing either one or both of titanium and titanium hydride to obtain a raw aluminum mixed powder; adding and mixing a water-soluble resin binder, water, a plasticizer containing at least one selected from polyhydric alcohols, ethers, and esters, and a water-insoluble hydrocarbon-based organic solvent containing five to eight carbon atoms into the raw aluminum mixed powder to obtain a viscous composition; shape-forming the viscous composition on an aluminum foil or an aluminum plate and causing the viscous composition to foam to obtain a formed object prior to sintering; and heating the formed object prior to sintering in a non-oxidizing atmosphere to obtain an aluminum composite which includes porous sintered aluminum integrally joined onto the aluminum foil or the aluminum plate, wherein when a temperature at which the raw aluminum mixed powder starts to melt isType: GrantFiled: March 30, 2010Date of Patent: April 8, 2014Assignee: Mitsubishi Materials CorporationInventors: Ji-bin Yang, Koji Hoshino, Kenji Orito, Hitoshi Maruyama
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Publication number: 20120135142Abstract: This method for producing an aluminum composite including porous sintered aluminum, includes: mixing aluminum powder with a sintering aid powder containing either one or both of titanium and titanium hydride to obtain a raw aluminum mixed powder; adding and mixing a water-soluble resin binder, water, a plasticizer containing at least one selected from polyhydric alcohols, ethers, and esters, and a water-insoluble hydrocarbon-based organic solvent containing five to eight carbon atoms into the raw aluminum mixed powder to obtain a viscous composition; shape-forming the viscous composition on an aluminum foil or an aluminum plate and causing the viscous composition to foam to obtain a formed object prior to sintering; and heating the formed object prior to sintering in a non-oxidizing atmosphere to obtain an aluminum composite which includes porous sintered aluminum integrally joined onto the aluminum foil or the aluminum plate, wherein when a temperature at which the raw aluminum mixed powder starts to melt isType: ApplicationFiled: March 30, 2010Publication date: May 31, 2012Applicant: MITSUBISHI MATERIALS CORPORATIONInventors: Ji-bin Yang, Koji Hoshino, Kenji Orito, Hitoshi Maruyama
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Publication number: 20120107166Abstract: This method for producing porous sintered aluminum includes: mixing aluminum powder with a sintering aid powder containing titanium to obtain a raw aluminum mixed powder; mixing the raw aluminum mixed powder with a water-soluble resin binder, water, and a plasticizer containing at least one selected from polyhydric alcohols, ethers, and esters to obtain a viscous composition; drying the viscous composition in a state where air bubbles are mixed therein to obtain a formed object prior to sintering; and heating the formed object prior to sintering in a non-oxidizing atmosphere, wherein when a temperature at which the raw aluminum mixed powder starts to melt is expressed as Tm (° C.), a temperature T (° C.) of the heating fulfills Tm?10 (° C.)?T?685 (° C.).Type: ApplicationFiled: March 30, 2010Publication date: May 3, 2012Applicant: Mitsubishi Materials CorporationInventors: Koji Hoshino, Ji-bin Yang, Kenji Orito, Shinichi Ohmori
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Publication number: 20120094142Abstract: This method for producing porous sintered aluminum includes: mixing aluminum powder with a sintering aid powder containing a sintering aid element to obtain a raw aluminum mixed powder; forming the raw aluminum mixed powder into a formed object prior to sintering having pores; and heating the formed object prior to sintering in a non-oxidizing atmosphere to produce porous sintered aluminum, wherein the sintering aid element is titanium, and when a temperature at which the raw aluminum mixed powder starts to melt is expressed as Tm (° C.), then a temperature T (° C.) of the heating fulfills Tm-10 (° C.)?T?685 (° C.).Type: ApplicationFiled: March 30, 2010Publication date: April 19, 2012Applicant: Mitsubishi Materials CorporationInventors: Koji Hoshino, Ji-Bin Yang, Kenji Orito, Shinichi Ohmori
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Patent number: 7794853Abstract: Porous titanium having a low contact resistance includes porous titanium body, Au, and Ti oxide layer (3). Porous titanium includes continuous holes (1) opening on a surface and being connected to inner holes and a skeleton (2). Au adheres to at least an outer skeletal surface (4) of the porous titanium via diffusion bonding to form a network structure. The Ti oxide layer (3) is formed in a clearance between adjacent Au cords (5) of the Au network sticking. The width of an Au cord (5) of the Au network is 0.3 to 10 ?m at least at one position; and the thickness of the Ti oxide layer (3), which is formed in the clearance between adjacent Au cords (5) of the Au network is 30 to 150 nm.Type: GrantFiled: December 13, 2007Date of Patent: September 14, 2010Assignee: Mitsubishi Materials CorporationInventors: Kenji Orito, Toshiharu Hayashi, Masahiro Wada, Reiko Izumi, Koji Hoshino
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Publication number: 20100015507Abstract: Porous titanium having a low contact resistance includes porous titanium body, Au, and a Ti oxide layer (3). Porous titanium includes continuous holes (1) opening on a surface and being connected to inner holes and a skeleton (2). Au adheres to at least an outer skeletal surface (4) of the porous titanium via diffusion bonding to form a network structure. The Ti oxide layer (3) is formed in a clearance between adjacent Au codes (5) of the Au network sticking. The width of an Au code (5) of the Au network is 0.3 to 10 ?m at least at one position; and the thickness of the Ti oxide layer (3), which is formed in the clearance between adjacent Au codes (5) of the Au network is 30 to 150 nm.Type: ApplicationFiled: December 13, 2007Publication date: January 21, 2010Applicant: MITSUBISHI MATERIALS CORPORATIONInventors: Kenji Orito, Toshiharu Hayashi, Masahiro Wada, Reiko Izumi, Koji Hoshino