Patents by Inventor Masao Itoh
Masao Itoh 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: 5711612Abstract: In a dynamic pressure bearing, a dynamic pressure-generating groove is provided to one of a thrust bearing surface and a part of a rotator facing the thrust bearing surface on one of a first and second thrust bearings, and a thrust bearing surface and a part of the rotator on the other one of the first and second thrust bearings which is not provided with the dynamic pressure-generating groove are smoothed so that the smoothed surfaces are formed.Type: GrantFiled: October 6, 1995Date of Patent: January 27, 1998Assignee: Konica CorporationInventors: Masao Itoh, Toyotsugu Itoh, Yoshio Iwamura
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Patent number: 5688053Abstract: An apparatus for supporting a rotator, comprises a radial bearing and a thrust bearing, wherein at least one of a radial bearing surface, a supported surface of the rotor facing the radial bearing surface, a thrust bearing surface and a regulated surface of the rotor facing the thrust bearing surface is a rough surface having a center-line mean roughness not less than 0.3 and a surface facing the rough surface is a smooth surface having a center-line mean roughens less than 0.3.Type: GrantFiled: August 23, 1996Date of Patent: November 18, 1997Assignee: Konica CorporationInventors: Masao Itoh, Satoshi Shibuya, Naoji Kamimura
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Patent number: 5566598Abstract: A method for cutting a surface of a base of a photoreceptor for electrophotography is disclosed. The method comprises steps of:(a) supplying an aqueous cutting fluid to the surface of the photoreceptor base;(b) cutting the surface of the photoreceptor base by a cutting tool comprising a single crystal diamond.Type: GrantFiled: July 1, 1994Date of Patent: October 22, 1996Assignee: Konica CorporationInventors: Sunao Kawada, Masataka Inagi, Masao Itoh, Toyotsugu Itoh, Takayoshi Hashimoto, Akira Ohira
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Patent number: 5538347Abstract: A dynamic pressure generating bearing includes a rotational body, a radial bearing provided adjacent to a center of the rotational body to rotatably support the rotational body around the radial bearing and at least one thrust bearing provided on one end of the radial bearing. When the rotational body is stably rotated, a minimum clearance generated between the rotational body and the thrust bearing is always greater than a minimum clearance generated between the rotational body and the radial bearing.Type: GrantFiled: March 17, 1995Date of Patent: July 23, 1996Assignee: Konica CorporationInventors: Masao Itoh, Yuko Takahashi, Yoshio Iwamura, Toyotsugu Itoh
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Patent number: 5506786Abstract: A cutting apparatus for finishing a surface of a substrate of a photoreceptor drum of an image forming apparatus estimates a finish state of the surface on real time with the finishing. The cutting apparatus has a detector to detect a cutting force to a cutting tool from the surface in finishing, a memory to store a cutting force pattern to distinguish the finish state of the surface, comparator means to compare the detected cutting force with the stored cutting force pattern and judging means to judge the finish state of the surface along with the progress of the cutting process.Type: GrantFiled: August 4, 1994Date of Patent: April 9, 1996Assignee: Konica CorporationInventors: Masao Itoh, Masataka Inagi, Sunao Kawada, Toyotsugu Itoh, Takayoshi Hashimoto
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Patent number: 5450725Abstract: A gas turbine combustor comprises a cylindrical outer casing having one end closed by a header plate. A combustor liner provided with an inner combustion chamber which is divided into a first-stage combustion region on a side of the header plate and a second-stage combustion region formed on a downstream side of the first-stage combustion region. A first-stage fuel supply unit mounted to the header plate for injecting a first-stage fuel to the first-stage combustion region and a second-stage fuel supply unit mounted to the header plate for injecting a second-stage fuel previously mixed in a lean fuel state. The first-stage fuel supply unit includes a first-stage fuel nozzle assembly, which supplies the first-stage fuel, formed by combining a diffusion combustion nozzle and a pre-mixture combustion nozzle.Type: GrantFiled: June 28, 1994Date of Patent: September 19, 1995Assignee: Kabushiki Kaisha ToshibaInventors: Takeshi Takahara, Tadashi Kobayashi, Masao Itoh
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Patent number: 5311742Abstract: A gas turbine combustor for a gas turbine power plant comprises a combustion liner connected to a turbine and provided with a main fuel nozzle assembly and a sub-fuel nozzle assembly for jetting fuel to an inside of the combustion liner through nozzle holes, a base fuel supply line, a main fuel line for supplying a fuel to the main nozzle assembly for premixing an air with the fuel jetted through the nozzle hole for carrying out a lean burning in the combustion liner, and a plurality of sub-fuel lines for supplying the fuel to the sub-fuel nozzle assembly for mixing the fuel with a combustion air for carrying out a diffusion burning in the combustion liner. The main and sub-fuel lines branch off a front end of the base fuel supply line.Type: GrantFiled: November 27, 1992Date of Patent: May 17, 1994Assignee: Kabushiki Kaisha ToshibaInventors: Atsuhiko Izumi, Masao Itoh
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Patent number: 5228369Abstract: In machining a substrate surface of a photoreceptor by the use of a cutting machine which supplies cutting lubricant from a reservoir to a cutting tool of the cutting machine, the method comprises a measurement of a cutting tool temperature by a sensor and a control of both the temperature of cutting lubricant and a flow rate thereof. The control is responsive to the cutting tool temperature and suppresses a temperature fluctuation of the cutting tool.Type: GrantFiled: December 9, 1991Date of Patent: July 20, 1993Assignee: Konica CorporationInventors: Masao Itoh, Sunao Kawada, Masataka Inagi, Takayoshi Hashimoto, Toyotsugu Itoh
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Patent number: 5170683Abstract: A method of surface-processing a photoreceptor base including aluminum material for electrophotography on a lathe, in which a surface of the base is cut by a cutting tool having a sintered polycrystalline diamond body while cutting fluid, composed of water, an aqueous solution of a surface-active agent or an aqueous solution of a water-soluble organic solvent, is being supplied to the surface of the base frame.Type: GrantFiled: December 16, 1991Date of Patent: December 15, 1992Assignee: Konica CorporationInventors: Sunao Kawada, Masataka Inagi, Masao Itoh, Toyotsugu Itoh, Takayoshi Hashimoto, Shinichi Kawano
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Patent number: 4817938Abstract: A bicycle ergometer includes an eddy current brake having a rotor assembly including an iron material having a carbon content of 0.12% or less and a silcon content of 0.35% or less, a stator provided in the rotor assembly, a plurality of exciting coils provided on the stator, and a power source for energizing the exciting coils. The ergometer includes an input panel for inputting physical attributes of the user, e.g., age and sex, a pulse sensor for measuring the heart rate of the user at rest and during exercise on the ergometer, an arithmetic control circuit for calculating a training program and heart rate range and for controlling the eddy current brake to present a load to the user which will maintain the user's heart rate in a predetermined range. The method of using the ergometer enables a user to select a physical strength program and a weight reduction program with the selected program reflecting the age, sex, and the present physical condition of the user.Type: GrantFiled: June 22, 1987Date of Patent: April 4, 1989Assignee: Combi Co., Ltd.Inventors: Shinroku Nakao, Masao Itoh, Akira Itoh, Hiroshi Takano
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Patent number: 4800310Abstract: A bicycle ergometer includes an eddy current brake having a flywheel rotor assembly including an inner part of iron material having a carbon content of 0.12% or less and a silicon content of 0.35% or less, a stator provided inside the rotor assembly, a plurality of exciting coils provided on the stator, and a power source for energizing the exciting coils. The outer part of the flywheel rotor can be made of concrete. The ergometer includes an input panel for inputting physical attributes of the user, e.g., age and sex, a pulse sensor for measuring the heart rate of the user at rest and during exercise on the ergometer, an arithmetic control circuit for calculating a training program and heart rate range and for controlling the eddy current brake to present a load to the user which will maintain the user's heart rate in a predetermined range.Type: GrantFiled: June 25, 1985Date of Patent: January 24, 1989Assignee: Combi Co., Ltd.Inventors: Shinroku Nakao, Masao Itoh, Akira Itoh, Hiroshi Takano
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Patent number: 4713277Abstract: A foamed metal which has an apparent specific gravity of from 0.2 to 0.8 and comprises an aggregate of polygonal closed cells of from 2 to 10 mm in average diameter. The foamed metal is not only light in weight, free of directionality and structurally strong but also excellent in sound-absorbing and electromagnetic shielding properties, and is useful as constructional, structural or functional material. A method for producing the foamed material comprises adding calcium as a thickening agent to molten aluminum or alloy thereof in an amount of from 0.2 to 8% by weight, followed by agitating to adjust the viscosity of the melet, then adding from 1 to 3% by weight of powdered titanium hydride as a foaming agent to the melt, and agitating the melt to effect foaming.Type: GrantFiled: July 18, 1986Date of Patent: December 15, 1987Assignees: Agency of Industrial Science and Technology, Shinko Kosen Kogyo Kabushiki KaishaInventors: Shigeru Akiyama, Hidetoshi Ueno, Koji Imagawa, Akira Kitahara, Sumio Nagata, Kazuo Morimoto, Tooru Nishikawa, Masao Itoh
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Patent number: 4678182Abstract: A bicycle ergometer includes an eddy current brake having a rotor assembly including an iron material having a carbon content of 0.12% or less and a silicon content of 0.35% or less, a stator provided in the rotor assembly, a plurality of exciting coils provided on the stator, and a power source for energizing the exciting coils. The ergometer includes an input panel for inputting physical attributes of the user, e.g., age and sex, a pulse sensor for measuring the heart rate of the user at rest and during exercise on the ergometer, an arithmetic control circuit for calculating a training program and heart rate range and for controlling the eddy current brake to present a load to the user which will maintain the user's heart rate in a predetermined range. The method of using the ergometer enables a user to select a physical strength program and a weight reduction program with the selected program reflecting the age, sex, and the present physical condition of the user.Type: GrantFiled: March 13, 1984Date of Patent: July 7, 1987Assignee: Combi Co., Ltd.Inventors: Shinroku Nakao, Masao Itoh, Akira Itoh, Hiroshi Takano
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Patent number: 4420397Abstract: Waste liquors containing high concentration of phenol and waste liquors containing methanol and formaldehyde in addition to phenol can economically be treated by a microorganism of geneus Aureobasidium to prevent water-pollution.Type: GrantFiled: December 17, 1981Date of Patent: December 13, 1983Assignee: Nagoya UniversityInventors: Yasuyuki Kaneko, Masao Itoh, Shinji Takahashi
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Patent number: 4367289Abstract: Coenzyme Q.sub.10 which is useful as a raw material of medicines for curing various diseases such as heart diseases, hypertension, etc. can economically be mass produced in a culture medium containing an extremely large quantity of p-hydroxybenzoic acid by using Rhodotorula sp. No. 46a strain.Type: GrantFiled: September 25, 1981Date of Patent: January 4, 1983Assignee: Nagoya UniversityInventors: Yasuyuki Kaneko, Masao Itoh, Shinji Takahashi, Masako Iritani