Patents by Inventor Keisuke Takahashi
Keisuke Takahashi 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: 20110103848Abstract: A development agent supply device is provided, which includes a development agent holding member configured to rotate around an axis parallel to a first direction such that a development agent holding surface, which faces an intended device to be supplied with development agent in a first position, moves in a second direction perpendicular to the first direction, a transfer board configured to charge and transfer development agent thereon to a second position to face the development agent holding surface, and a facing member disposed to face the development agent holding surface in a position between the first position and the second position in the second direction, the facing member being configured to charge development agent held on the development agent holding surface under an alternating electric field generated between the facing member and the development agent holding member.Type: ApplicationFiled: September 29, 2010Publication date: May 5, 2011Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Kazuna TAGUCHI, Keisuke TAKAHASHI, Kenjiro NISHIWAKI
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Publication number: 20110076926Abstract: A gear grinding tool, which includes a helical tooth with grinding faces on surfaces thereof, grinds tooth faces of a gear as a workpiece with the grinding faces. The grinding face includes a rough grinding face for performing a rough grinding process. The grinding face includes a rough grinding face for performing a rough grinding process, and the rough grinding face includes a forming line for performing a finishing process.Type: ApplicationFiled: September 28, 2010Publication date: March 31, 2011Applicant: HONDA MOTOR CO., LTD.Inventors: Tatsuya Ito, Naoki Iwasa, Hiroshi Ogawa, Keisuke Takahashi, Yuichi Tomizawa, Yasutaka Matsuo, Masahiro Izumida
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Publication number: 20110023667Abstract: A non-round hole boring device capable of machining a work in a desired cross sectional shape by a simple configuration. The non-round hole boring device (1) comprises cylindrical arbors (11, 21), shafts (12, 22) stored in the arbors (11, 21), respectively, a cutting tool (13) attached to the outer peripheral surface of the arbor (11), a cam (121) formed on the shaft (12) and pressing the cutting tool (13), a first rotary encoder (252), a second rotary encoder (241), an arbor motor (23) for rotatingly driving the arbors (11, 21), a shaft motor (24) for rotatingly driving the shafts (12, 22), and a controller (40). The controller (40) advances or retards the phases of the rotating angles of the shafts (12, 22) relative to the phases of the rotating angles of the arbors (11, 21), respectively, while rotating the arbors (11, 21) and the shafts (12, 22) in synchronism with each other, respectively.Type: ApplicationFiled: March 3, 2009Publication date: February 3, 2011Applicant: HONDA MOTOR CO., LTD.Inventors: Masao Kume, Jin Fukumitsu, Naoya Matsunaga, Keisuke Takahashi
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Publication number: 20110018500Abstract: A charging device to charge a secondary battery that includes a DC/DC circuit to generate a charging current supplied to the secondary battery, an impedance measurement circuit to measure an impedance of the secondary battery, a first control circuit to output a duty-cycle decrease signal in accordance with the measured impedance, a charging-current monitor circuit to detect the charging current outputted from the DC/DC circuit when the duty cycle of the pulses generated by the DC/DC circuit is decreased by the duty-cycle decrease signal, and, a second control circuit to compare the charging current detected by the charging-current monitor circuit and a charging-current threshold and to output to the DC/DC circuit a frequency change signal that increases a switching operation frequency in the DC/DC circuit.Type: ApplicationFiled: July 20, 2010Publication date: January 27, 2011Applicant: RICOH COMPANY, LTD.Inventor: Keisuke TAKAHASHI
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Patent number: 7848670Abstract: A developing device includes an image carrier, a developer carrier, a biasing unit disposed upstream of a developing area, and a controller configured to control the biasing unit, and a cleaning member disposed downstream of the developing area to remove the liquid developing agent remaining on the developer carrier. A latent image held on the image carrier may be developed with the liquid developing agent, including charged toner and a carrier liquid, at the developing area where the developer carrier faces the image carrier. The controller causes the biasing unit to apply a first bias voltage to the surface of the liquid developing agent held on the developer carrier during developing, or a second bias voltage thereto during cleaning.Type: GrantFiled: August 17, 2007Date of Patent: December 7, 2010Assignee: Brother Kogyo Kabushiki KaishaInventor: Keisuke Takahashi
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Publication number: 20100300713Abstract: A cam driving device for a processing device including a cylindrical member, a rotational shaft that has a mount hole formed on the outer peripheral surface thereof, a cam, and a tool that is mounted in the mount hole of the cylindrical member so that the tool can be protruded and retracted through the mount hole in a radial direction of the rotational shaft in accordance with a profile of the cam. The cylindrical member and the rotational shaft are axially reciprocated to process a non-circular bore, including a storage unit for storing a data table representing associating relationship between a rotational angle of the cam and a protrusion amount of the tool which is provided on the basis of the rotational angle of the cam, and a controller for advancing or retarding the rotational angle of the rotational shaft according to the data table stored in the storage unit.Type: ApplicationFiled: May 14, 2010Publication date: December 2, 2010Applicant: HONDA MOTOR CO., LTD.Inventors: Masao Kume, Keisuke Takahashi
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Publication number: 20100129120Abstract: A developing device comprises: a development roller configured to rotate while carrying liquid toner which comprises a carrier liquid and toner particles contained in the carrier liquid; a cleaning blade configured to contact with the development roller to scrape off the liquid toner carried on the development roller by the rotation of the development roller; and a cleaning roller provided adjacent to the development roller and upstream from the cleaning blade with respect to a rotating direction of the development roller. In the developing device, the development roller and the cleaning roller are configured to rotate in such a direction that outer peripheral surfaces thereof move in opposite directions to each other at a contact surface where the cleaning roller contacts with the development roller.Type: ApplicationFiled: November 19, 2009Publication date: May 27, 2010Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Seiichi SENDA, Keita SHIMIZU, Keisuke TAKAHASHI
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Publication number: 20100021369Abstract: A method for producing an alkali metal iodide salt solution including combusting a liquid for combustion so as to combust a combustible component of the liquid for combustion; and subsequently cooling a resultant gas containing a decomposition product. The method comprises the steps of (a) providing a liquid containing (i) an alkali metal iodide salt, (ii) an inorganic-salt-forming substance capable of forming, at combustion, an inorganic salt containing an alkali metal and (iii) an organic compound; (b) adding to the liquid a precipitation solvent capable of depositing the inorganic-salt-forming substance; (c) removing from the liquid the inorganic-salt-forming substance precipitated in the step (b) so as to obtain the liquid for combustion; and (d) combusting the liquid for combustion and subsequently cooling the resultant gas containing a decomposition product.Type: ApplicationFiled: March 11, 2008Publication date: January 28, 2010Inventors: Yuichiro Kinoshita, Sayaka Shiomitsu, Keisuke Takahashi
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Publication number: 20090237277Abstract: A keyboard device includes multiple key switches, a scan memory that temporarily stores a result obtained by scanning keyboard as scan data, a confirmed data memory that stores a confirmed key input, a first determination mechanism that determines whether the scan data stored in the scan memory indicates that multiple keys on a single scan line are on, a readout mechanism that reads out a data of a scan line immediately preceding the scan line that is currently scanned from the data memory, a second determination mechanism that compares the data stored in the scan memory with the readout data from the readout mechanism and determines whether a single detection line includes two keys that are on, and a key confirmation mechanism that determines a current sneak when the second mechanism detects that the single scan line includes two key switches that are on and confirms the key input.Type: ApplicationFiled: March 11, 2009Publication date: September 24, 2009Applicant: RICOH COMPANY, LTD.Inventor: Keisuke Takahashi
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Publication number: 20080080883Abstract: A developing device includes an image carrier, a developer carrier, a biasing unit disposed upstream of a developing area, and a controller configured to control the biasing unit, and a cleaning member disposed downstream of the developing area to remove the liquid developing agent remaining on the developer carrier. A latent image held on the image carrier may be developed with the liquid developing agent, including charged toner and a carrier liquid, at the developing area where the developer carrier faces the image carrier. The controller causes the biasing unit to apply a first bias voltage to the surface of the liquid developing agent held on the developer carrier during developing, or a second bias voltage thereto during cleaning.Type: ApplicationFiled: August 17, 2007Publication date: April 3, 2008Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventor: Keisuke Takahashi
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Patent number: 7267058Abstract: Wires (electric wires) 29 and 30 of cars are connected to each other through connecting wires mounted to a truck frame of an articulated truck. The connecting wires are inserted into a flexible protecting pipe member and an intermediate portion thereof is mounted within a concave portion formed on an upper portion of a side frame of the truck frame. And, an upper opening of the concave portion is closed by a cover plate. Connectors 22 and 23 are provided at front and rear end portions of the connecting wire for electric connection with cars. The connectors 22 and 23 are removably connected to connectors 26 and 27 of the wires 29 and 30 of the cars, which are mounted by mounting brackets 24 and 25 under the car bodies 2A and 3A.Type: GrantFiled: June 10, 2003Date of Patent: September 11, 2007Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Yoshikazu Ohashi, Naohiro Hiraoka, Keisuke Takahashi, Yoichi Kishi
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Patent number: 7209691Abstract: A developing device includes a developer carrier capable of carrying a developer, and a thickness regulating member having a resistance of 103 ? or less and regulating a thickness of a layer of a developer carried by the developer carrier.Type: GrantFiled: March 21, 2006Date of Patent: April 24, 2007Assignee: Brother Kogyo Kabushiki KaishaInventors: Keisuke Takahashi, Mitsuru Horinoe
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Publication number: 20060216073Abstract: A developing device includes a developer carrier capable of carrying a developer, and a thickness regulating member having a resistance of 103 ? or less and regulating a thickness of a layer of a developer carried by the developer carrier.Type: ApplicationFiled: March 21, 2006Publication date: September 28, 2006Inventors: Keisuke Takahashi, Mitsuru Horinoe
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Patent number: 7110688Abstract: An image forming device includes a developer bearing member, a photosensitive member, a developing-bias applying portion, a pressing-force adjusting portion, and a density adjusting portion. The photosensitive member is disposed in contact with the developer bearing member. An electrostatic latent image is formed on the photosensitive member and developed by the developer supplied from the developer bearing member for forming a developer image. The developing-bias applying portion applies a developing bias to the developer bearing member. The pressing-force adjusting portion adjusts the pressing force between the developer bearing member and the photosensitive member.Type: GrantFiled: December 22, 2004Date of Patent: September 19, 2006Assignee: Brother Kogyo Kabushiki KaishaInventors: Keisuke Takahashi, Masashi Suzuki
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Patent number: 7106999Abstract: A fixing device in an image forming device that includes a rotating heating roller, a coil provided on the outside of the heating roller, a heating mechanism using the coil to heat the heating roller through electromagnetic induction, and a pressure roller that contacts the heating roller with pressure and, together with the heating roller, pinches and conveys a recording paper in order to fix developer that has been transferred onto the recording paper, wherein a magnetic layer is formed over the pressure roller to increase the amount of magnetic flux passing through the surface of the heating roller.Type: GrantFiled: June 29, 2004Date of Patent: September 12, 2006Assignee: Brother Kogyo Kabushiki KaishaInventor: Keisuke Takahashi
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Patent number: 7076196Abstract: A fixing device includes a heating roller, electromagnetic induction heater for heating the heating roller, and a pressurization roller disposed in contact with the outer periphery of the heating roller. The electromagnetic induction heater has a support extending like a tube along the outer periphery of the heating roller containing both ends in an axial direction orthogonal to a rotational direction of the heating roller and both sides parallel with the axial direction outside the heating roller. A coil is wound around the outer face of the support so as to contain a center axis of the heating roller inside the tubular part. The fixing device nips and transports recording paper to which toner has been transferred in a press contact nip part between the heating roller and the pressurization roller so as to fix an image.Type: GrantFiled: September 25, 2003Date of Patent: July 11, 2006Assignee: Brother Kogyo Kabushiki KaishaInventors: Keisuke Takahashi, Kenjiro Nishiwaki
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Patent number: 7063500Abstract: A method of stacking a veneer sheet carried by a conveyer onto a pile of similar veneer sheets is disclosed. Veneer sheet is separated from the conveyer thereby to allow the sheet to drop from the conveyer toward the pile. The veneer sheet being dropped is restrained by an elongated flexible member which is lowered substantially simultaneously with the above separation and at such a speed that the flexible member is brought into frictional engagement with the veneer sheet at at least one side thereof which extends in substantially perpendicular relation to the length of the elongated flexible member. The flexible member is lowered until it is bent in pressing engagement with the veneer sheet then dropped onto the pile at the above side thereof. An apparatus for performing the method is also disclosed.Type: GrantFiled: October 31, 2005Date of Patent: June 20, 2006Assignee: Meinan Machinery Works, Inc.Inventor: Keisuke Takahashi
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Patent number: 7004078Abstract: In a truck for railroad car capable of absorbing and reducing deformation due to torsional force acting on an end beam, end portions of right and left side frames 2a and 2b of a truck frame 2 are connected by an end beam 3. An antenna support member 4 is supported by the end beam 3. The end beam 3 includes antenna brackets 3a and 3b, as right and left support brackets, connected and fixed to outer end portions of the right and left side frames 2a and 2b by fastening tools 5, and a center bar 3c connected to inner end portions of the right and left antenna brackets 3a and 3b through rubber bushes 6 and 7 and having an antenna support member 4. The rubber bushes 6 and 7 are positioned at both sides of the antenna support member 4 of the end beam 3, include elastic rubber members 6a and 7a, and absorb the torsional force acting on the end beam 3 by elastic deformation of the elastic rubber members 6a and 7a.Type: GrantFiled: October 27, 2003Date of Patent: February 28, 2006Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Takehiro Nishimura, Keisuke Takahashi, Yasufumi Okumura, Junichi Sakamoto
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Publication number: 20050211127Abstract: Wire connection and pipe connection between two cars is easily performed. Wires (electric wires) 29 and 30 of cars are connected to each other through connecting wires 21 mounted to a truck frame 4C of an articulated truck 4. The connecting wires 21 are inserted into a flexible protecting pipe member 28 and an intermediate portion thereof is mounted within a concave portion 4Da formed on an upper portion of a side frame 4D of the truck frame 4C. And, an upper opening of the concave portion 4Da is closed by a cover plate. Connectors 22 and 23 are provided at front and rear end portions of the connecting wire 21 for electric connection with cars. The connectors 22 and 23 are removably connected to connectors 26 and 27 of the wires 29 and 30 of the cars, which are mounted by mounting brackets 24 and 25 under the car bodies 2A and 3A.Type: ApplicationFiled: June 10, 2003Publication date: September 29, 2005Inventors: Yoshikazu Ohashi, Naohiro Hiraoka, Keisuke Takahashi, Yoichi Kishi
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Publication number: 20050141909Abstract: An image forming device includes a developer bearing member, a photosensitive member, a developing-bias applying portion, a pressing-force adjusting portion, and a density adjusting portion. The photosensitive member is disposed in contact with the developer bearing member. An electrostatic latent image is formed on the photosensitive member and developed by the developer supplied from the developer bearing member for forming a developer image. The developing-bias applying portion applies a developing bias to the developer bearing member. The pressing-force adjusting portion adjusts the pressing force between the developer bearing member and the photosensitive member.Type: ApplicationFiled: December 22, 2004Publication date: June 30, 2005Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Keisuke Takahashi, Masashi Suzuki