Patents by Inventor Koichi Maeda
Koichi Maeda 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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Publication number: 20060183000Abstract: A cutting tool made of surface-coated cemented carbide having the hard coating layer formed on the surface of a cemented carbide substrate, wherein the hard coating layer has a top layer and a bottom layer, the top layer includes a structure having the thin layer A and the thin layer B being stacked alternately, with the thin layer A having the composition of [Ti1-(A+B)AlASiB]N (A is in a range from 0.01 to 0.06 and B is in a range from 0.25 to 0.35 in an atomic ratio) and the thin layer B having the composition of [Ti1-(C+D)AlCSiD]N (C is in a range from 0.30 to 0.45 and D is in a range from 0.10 to 0.15), and the bottom layer comprises single phase structure having the composition of [Ti1-(E+F)AlESiF]N (E is in a range from 0.50 to 0.60 and F is in a range from 0.01 to 0.09).Type: ApplicationFiled: February 9, 2006Publication date: August 17, 2006Applicants: Mitsubishi Materials Corporation, Mitsubishi Materials Kobe Tools CorporationInventors: Akihiro Kondo, Yusuke Tanaka, Koichi Maeda
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Patent number: 7074285Abstract: The invention provides a high-speed tool steel gear cutting tool in which fracture or chipping does not occur at the cutting edge, and which realizes excellent cutting performance over long periods. Moreover, a method of manufacturing a gear cutting tool including: a step for quenching a tool material comprising high-speed tool steel and which has been rough processed to a shape corresponding to a final shape of a gear cutting tool, to transform a structure of the tool material into martensite, a step for temperling the tool material after quenching to transform any residual austenite dispersingly distributed throughout a matrix of the martensite structure formed by the quenching, into martensite, and a step for finishing the tool material after tempering to a final shape, is characterized in that the tool material after quenching is subjected to sub-zero treatment involving cooling and holding at a temperature of less than ?150 ° C.Type: GrantFiled: June 11, 2003Date of Patent: July 11, 2006Assignee: Mitsubishi Materials Kobe Tools CorporationInventors: Yasuyuki Yamada, Natsuki Ichimiya, Koichi Maeda, Yusuke Tanaka, Kazuaki Tanaka
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Patent number: 6978876Abstract: An escalator step riser is improved by adding grooves to the cleat surfaces, and, at the same time, a skid-inhibiting function is realized at the rear edge of the step. For escalator step (1), cleats (5a) are formed with a pitch twice that of tread (4) on riser (3). On each cleat (5a) of the riser (3), one or more grooves (6) are formed in the longitudinal direction. In addition, skid-inhibiting surface (7), made of synthetic resin and having a prescribed width, is attached in a quick connecting/disconnecting manner on the rear edge of step (2). A serrated irregular portion (7c) is formed on the upper surface of cleats (7a), (7b) of the non-slip surface (7).Type: GrantFiled: September 6, 2000Date of Patent: December 27, 2005Assignee: Otis Elevator CompanyInventors: Yoshio Tsukahara, Kazuhiko Motomura, Takashi Tanaka, Koichi Maeda
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Patent number: 6863269Abstract: A fluid filled vibration damping device includes an elastic body connecting a first and a second mounting member to close one opening of the second mounting member, and a lid member is fixed caulkwise to a shoulder of the second mounting member to close the other opening of the second mounting member, thereby providing a fluid chamber filled with a noncomporessible fluid. A partition member of outside diameter smaller than the inside diameter of the cylindrical caulking portion is formed with engaging projections rising up with a uplift cutout form. The engaging projections is fit into the second mounting member with the partition member superimposed on the shoulder so that the second mounting member is positioned in an axis-perpendicular direction to the second mounting member. Cutout openings left after the engaging projections have been formed are closed by a sealing portion.Type: GrantFiled: March 24, 2004Date of Patent: March 8, 2005Assignee: Tokai Rubber Industries, Ltd.Inventors: Kei Okumura, Hajime Maeno, Koichi Maeda
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Patent number: 6854721Abstract: A vibration-damping device for damping vibrations of a vibrative member, which includes a damper mass member having a rigid abutting portion, a spring member for elastically connecting the damper mass member to the vibrative member to cooperate with the damper mass member to constitute a second vibration system whose natural frequency is tuned to a frequency band of the vibrations of the vibrative member, and an independent mass member disposed so as to be opposed to the rigid abutting portion in a vibration input direction with a given gap therebetween without being adhesive to the rigid abutting portion. The independent mass member is independently displaceable relative to and brought into abutting contact directly and elastically with said rigid abutting portion in said vibration input direction.Type: GrantFiled: February 13, 2002Date of Patent: February 15, 2005Assignee: Tokai Rubber Industries, Ltd.Inventors: Rentaro Kato, Hajime Maeno, Koichi Hasegawa, Koichi Maeda, Takahiro Aoi
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Patent number: 6811581Abstract: The invention provides a high-speed tool steel gear cutting tool in which fracture or chipping does not occur at the cutting edge, and which realizes excellent cutting performance over long periods. Moreover, a method of manufacturing a gear cutting tool including: a step for quenching a tool material comprising high-speed tool steel and which has been rough processed to a shape corresponding to a final shape of a gear cutting tool, to transform a structure of the tool material into martensite, a step for temperling the tool material after quenching to transform any residual austenite dispersingly distributed throughout a matrix of the martensite structure formed by the quenching, into martensite, and a step for finishing the tool material after tempering to a final shape, is characterized in that the tool material after quenching is subjected to sub-zero treatment involving cooling and holding at a temperature of less than −150° C.Type: GrantFiled: October 31, 2001Date of Patent: November 2, 2004Assignee: Mitsubishi Materials Kobe Tools CorporationInventors: Yasuyuki Yamada, Natsuki Ichimiya, Koichi Maeda, Yusuke Tanaka, Kazuaki Tanaka
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Publication number: 20040188900Abstract: A fluid filled vibration damping device includes an elastic body connecting a first and a second mounting member to close one opening of the second mounting member, and a lid member is fixed caulkwise to a shoulder of the second mounting member to close the other opening of the second mounting member, thereby providing a fluid chamber filled with a noncomporessible fluid. A partition member of outside diameter smaller than the inside diameter of the cylindrical caulking portion is formed with engaging projections rising up with a uplift cutout form. The engaging projections is fit into the second mounting member with the partition member superimposed on the shoulder so that the second mounting member is positioned in an axis-perpendicular direction to the second mounting member. Cutout openings left after the engaging projections have been formed are closed by a sealing portion.Type: ApplicationFiled: March 24, 2004Publication date: September 30, 2004Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Kei Okumura, Hajime Maeno, Koichi Maeda
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Publication number: 20040183241Abstract: A fluid filled vibration damping device including: an elastic body elastically connecting a first and a second mounting member and partially defining a pressure receiving chamber filled with a non-compressible fluid; a flexible diaphragm partially defining an equilibrium chamber filled with the non-compressible fluid and connected to the pressure-receiving chamber via an orifice passage. The first mounting member includes an elastic-body-side central member bonded to the elastic body central portion, and a rubber-layer-side central member bonded to the flexible rubber layer central portion, both mutually superposed on and fastened together by a connecting bolt. A fitting recess and projection are formed at an interface between two members, and a mounting projection projecting outward on an opposite side from the interface. The connecting bolt is off-centered from a center of the two members by a give distance.Type: ApplicationFiled: January 30, 2004Publication date: September 23, 2004Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Katsuhiro Goto, Hajime Maeno, Koichi Maeda
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Publication number: 20040183240Abstract: A fluid filled vibration damping device including: an elastic body elastically connecting a first and a second mounting member and partially defining a pressure receiving chamber filled with a non-compressible fluid and undergoing fluid pressure variation upon application of vibrational load between the first and second mounting members; a flexible diaphragm partially defining an equilibrium chamber filled with the non-compressible fluid and whose volume is variable; and an orifice passage permitting a fluid communication between the pressure-receiving chamber and the equilibrium chamber. The flexible diaphragm is constituted by a rubber elastic layer having an annular thick-walled portion and a central thick-walled portion situated at a substantially central portion of an inner area surrounded by the annular thick-walled portion, while being independent of the annular thick-walled portion.Type: ApplicationFiled: January 30, 2004Publication date: September 23, 2004Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Hajime Maeno, Koichi Maeda, Kazuhiko Kato
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Publication number: 20040083161Abstract: An electronic bidding proxy system capable of selecting an optimal maker or supplier quickly and efficiently even with respect to the bidding targets of a large amount of items is provided. The electronic catalog platform selects supplier candidate according to total points of each supplier calculated by applying a value of each bidding parameter described in a bidding catalog corresponding to a catalog for bidding produced from a bidding target information to a calculation formula or a template for supplier selection, produces their catalog for comparison, calculates total points of each supplier candidate according to a supplier candidate narrowing down information from a buyer's device and the template, selects a re-bidding supplier candidates, and selects an optimal supplier by regarding a re-bidding catalog corresponding to a catalog for re-bidding produced by integrating and processing their bidding catalogs and repeatedly carrying out the above described processing.Type: ApplicationFiled: July 30, 2003Publication date: April 29, 2004Inventors: Koichi Maeda, Sasamu Kakuta, Ryoichi Kasuga, Osamu Fushimi
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Patent number: 6722481Abstract: A vibration-damping device includes a housing member and a pillar-shaped mass member housed within an accommodation space of the housing member with a slight spacing therebetween so that the mass member is freely displaceable within the accommodation space to come into impact on the housing member. A rubber buffer and an abutting rubber member integrally formed with each other and fixed to at least one of axial end portions of the mass member such that the rubber buffer covers an outer circumferential surface of the end portion of the mass member, and the abutting rubber member disposed over an end face of the axial end portion of the mass member. A void is formed between the abutting rubber member and the end portion of the mass member so that the abutting rubber member undergoes shear deformation upon an impact of the mass member on the housing member at the abutting rubber member.Type: GrantFiled: September 24, 2002Date of Patent: April 20, 2004Assignee: Tokai Rubber Industries, Ltd.Inventors: Hajime Maeno, Koichi Maeda
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Publication number: 20030205304Abstract: The invention provides a high-speed tool steel gear cutting tool in which fracture or chipping does not occur at the cutting edge, and which realizes excellent cutting performance over long periods. Moreover, a method of manufacturing a gear cutting tool including: a step for quenching a tool material comprising high-speed tool steel and which has been rough processed to a shape corresponding to a final shape of a gear cutting tool, to transform a structure of the tool material into martensite, a step for temperling the tool material after quenching to transform any residual austenite dispersingly distributed throughout a matrix of the martensite structure formed by the quenching, into martensite, and a step for finishing the tool material after tempering to a final shape, is characterized in that the tool material after quenching is subjected to sub-zero treatment involving cooling and holding at a temperature of less than −150 ° C.Type: ApplicationFiled: June 11, 2003Publication date: November 6, 2003Applicant: MMC KOBELCO TOOL CO., LTD.Inventors: Yasuyuki Yamada, Natsuki Ichimiya, Koichi Maeda, Yusuke Tanaka, Kazuaki Tanaka
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Patent number: 6618515Abstract: An optical connector 10 includes slide pins 16a and 16b, held for movement in a direction of an axis of the optical connector 10, and a proximity switch 21 whose conducting state can be switched in response to the movement of the slide pins. Only when the optical connector 10 is properly connected to an optical receptacle 11, the proximity switch 21 is turned into the conducting state.Type: GrantFiled: June 21, 2001Date of Patent: September 9, 2003Assignee: Mitsubishi Cable Industries, Ltd.Inventors: Koji Kimura, Takeshi Satake, Koichi Maeda
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Patent number: 6598718Abstract: Disclosed is a vibration-damping device comprising an abutting member adapted to be fixedly disposed in a vibrative member and an independent mass member disposed relative to the abutting member such that the independent mass member is displaceable relative to the abutting member while being independent of the abutting member without being adhesive to the abutting member. The independent mass member having an abutting surface that comes into abutting contact directly and elastically with an abutting surface of the abutting member, in which at least one of the abutting surfaces of the abutting member and the independent mass member is provided with a flock coating.Type: GrantFiled: March 19, 2002Date of Patent: July 29, 2003Assignee: Tokai Rubber Industries, Ltd.Inventors: Rentaro Kato, Koichi Maeda
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Publication number: 20030057623Abstract: A vibration-damping device includes a housing member and a pillar-shaped mass member housed within an accommodation space of the housing member with a slight spacing therebetween so that the mass member is freely displaceable within the accommodation space to come into impact on the housing member. A rubber buffer and an abutting rubber member integrally formed with each other and fixed to at least one of axial end portions of the mass member such that the rubber buffer covers an outer circumferential surface of the end portion of the mass member, and the abutting rubber member disposed over an end face of the axial end portion of the mass member. A void is formed between the abutting rubber member and the end portion of the mass member so that the abutting rubber member undergoes shear deformation upon an impact of the mass member on the housing member at the abutting rubber member.Type: ApplicationFiled: September 24, 2002Publication date: March 27, 2003Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Hajime Maeno, Koichi Maeda
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Publication number: 20030039207Abstract: The present invention is directed to the provision of a transmission apparatus and, more particularly, of a transmission apparatus equipped with an alarm transfer device that enables alarm information to be transferred on a network where a protocol having a dedicated frame for achieving network management and client maintenance and a protocol that does not have such a dedicated frame are running in mixed fashion. The transmission apparatus, which is connected to the network where transparent data transmissions are performed using a plurality of client protocols, is designed to accommodate at least one of the plurality of protocols as a primary client protocol, and the alarm transfer device transfers alarm information indicating the occurrence of a failure to a destination transmission apparatus via the network, wherein the alarm information is transferred using an alarm frame created based on a prescribed client protocol unified among the plurality of client protocols.Type: ApplicationFiled: February 20, 2002Publication date: February 27, 2003Inventors: Koichi Maeda, Kazuhiko Omura, Katsuyuki Okabe, Masakazu Ozaki
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Patent number: 6524771Abstract: There are disclosed the following three types of optical recording film: (1) an optical recording film comprising a gel having a network structure of an inorganic substance and a polymer which is from a photopolymerizable compound (A) and present in the network structure in the gel, said gel containing an optical recording-induced difference in the network structure. (2) an optical recording film, which consists essentially of a porous gel having a network structure of an inorganic substance, the porous gel containing recording-induced porosity differences in the network structure. (3) an optical recording film which consists essentially of a porous gel having a network structure of an inorganic substance or a gel obtained by densification of the porous gel, the porous gel or the gel having a recording-induced concavo-convex form on the surface thereof.Type: GrantFiled: July 13, 2001Date of Patent: February 25, 2003Assignee: Nippon Sheet Glass Co., Ltd.Inventors: Koichi Maeda, Hiroaki Yamamoto, Akio Takigawa
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Patent number: 6479193Abstract: There are disclosed the following three types of optical recording film: (1) an optical recording film comprising a gel having a network structure of an inorganic substance and a polymer which is from a photopolymerizable compound (A) and present in the network structure in the gel, said gel containing an optical recording-induced difference in the network structure. (2) an optical recording film, which consists essentially of a porous gel having a network structure of an inorganic substance, the porous gel containing recording-induced porosity differences in the network structure. (3) an optical recording film which consists essentially of a porous gel having a network structure of an inorganic substance or a gel obtained by densification of the porous gel, the porous gel or the gel having a recording-induced concavo-convex form on the surface thereof.Type: GrantFiled: March 28, 1995Date of Patent: November 12, 2002Assignee: Nippon Sheet Glass Co., Ltd.Inventors: Koichi Maeda, Hiroaki Yamamoto, Akio Takigawa
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Publication number: 20020159715Abstract: An optical connector 10 includes slide pins 16a and 16b, held for movement in a direction of an axis of the optical connector 10, and a proximity switch 21 whose conducting state can be switched in response to the movement of the slide pins. Only when the optical connector 10 is properly connected to an optical receptacle 11, the proximity switch 21 is turned into the conducting state.Type: ApplicationFiled: June 21, 2001Publication date: October 31, 2002Applicant: MITSUBISHI CABLE INDUSTRIES, LTD.Inventors: Koji Kimura, Takeshi Satake, Koichi Maeda
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Publication number: 20020139625Abstract: Disclosed is a vibration-damping device comprising an abutting member adapted to be fixedly disposed in a vibrative member and an independent mass member disposed relative to the abutting member such that the independent mass member is displaceable relative to the abutting member while being independent of the abutting member without being adhesive to the abutting member. The independent mass member having an abutting surface that comes into abutting contact directly and elastically with an abutting surface of the abutting member, in which at least one of the abutting surfaces of the abutting member and the independent mass member is provided with a flock coating.Type: ApplicationFiled: March 19, 2002Publication date: October 3, 2002Inventors: Rentaro Kato, Koichi Maeda