Patents by Inventor Kiyoshi Nakajima

Kiyoshi Nakajima 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).

  • Patent number: 9388891
    Abstract: A multi-shaft drive device is provided that is capable of obtaining an appropriate backlash in an enmeshed state of an output side bevel gear and an input side bevel gear. An output side bevel gear (35) that is biased in the direction of an input side bevel gear by a coil spring contacts a shaft support bush attached to a wall portion (17) in an enmeshed state with the input side bevel gear. A bias direction stroke end of the output side bevel gear (35) is accordingly restricted. Moreover, the wall portion (17) is provided to a gear holder (15) fixed to a device case (10) that supports the input side bevel gear, thereby enabling the axial direction position of the output side bevel gear (35) to always be positioned at a uniform position to enmesh appropriately with the input side bevel gear.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: July 12, 2016
    Assignee: NHK SPRING CO., LTD.
    Inventors: Ryohei Shigematsu, Takafumi Hirata, Takahiro Fujii, Kiyoshi Nakajima, Shinji Iino, Soichi Nakayama
  • Patent number: 9328791
    Abstract: Provided is a solenoid-type variable damping force damper that improves the strength of the piston and prevents wire break in the electromagnetic coil. A piston includes a piston main body, an expansion-side valve plate, a contraction-side valve plate, an electromagnetic coil, and a bolt. The piston main body is an integrally formed component made of a ferromagnetic material, and includes a hollow cylindrical outer yoke that is in slidable contact with an inner peripheral surface of a cylinder, a columnar inner yoke having an outer peripheral surface opposing an inner peripheral surface of the outer yoke via first and second gaps, and a connection member connecting the outer yoke and the inner yoke with each other at an axially middle position of the piston and separating the first and second gaps from each other. The electromagnetic coil is fitted in the second gap of the piston main body.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: May 3, 2016
    Assignee: Honda Motor Co., Ltd.
    Inventor: Kiyoshi Nakajima
  • Patent number: 9303711
    Abstract: A damper includes: an inner cylinder defining an inner chamber, having a slidable contact piston; an outer cylinder outside the inner cylinder and defining a reservoir chamber between the inner outer cylinders; and a damping-force control device controlling damping force by controlling a flow rate of an operating oil between the inner reservoir chambers. The control device includes a valve seat externally, projecting from the outer cylinder, having an opening for a first communicating channel connected to the inner chamber and an opening for a second communicating channel connected to the reservoir chamber, a valve element opening and closing on the valve seat by electromagnetic force, and a cap defining a variable pressure chamber between the cap and the valve element, and integrally holds the valve element and the valve seat. The variable pressure chamber can be connected to the first and the second communicating channels.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: April 5, 2016
    Assignee: Honda Motor Co., Ltd.
    Inventor: Kiyoshi Nakajima
  • Patent number: 9103398
    Abstract: A solenoid-type variable damping force damper prevents excessive opening of a valve plate when the damper operates at a high speed, thereby achieving reduced electric power consumption. A valve body of an expansion-side valve plate is opened by pressure of hydraulic oil flowing in from an expansion-side first communication oil passage, but at this time, the oil pressures on the side of the upper surface and on the side of the under surface of the valve body are substantially equal to each other within the expansion-side pressure accumulation chamber, owing partly to a flow of the hydraulic oil passing through flow rate adjustment holes. Therefore, even when the damper undergoes an expanding action at a high speed and the hydraulic oil flows in from the expansion-side first communication oil passage at a high inflow rate, the valve body of the expansion-side valve plate is less likely to open excessively.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: August 11, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventor: Kiyoshi Nakajima
  • Patent number: 9027442
    Abstract: Output gears are disposed so as to be movable toward and counter to plural second input gears to which rotation of the motor is transmitted, and so as to be biased toward the plural second input gears. A cam, which has plural recesses provided at the periphery thereof, is disposed at the inside of the output gear. The cam is rotated, and a pin of the output gear enters the recess, so that the output gear is moved toward the second input gear, and the output gear is engaged with the second input gear.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: May 12, 2015
    Assignee: NHK Spring Co., Ltd.
    Inventors: Ryohei Shigematsu, Kiyoshi Nakajima, Kenji Murakami, Takahiro Fujii, Shinji Iino, Hiroshi Yagame
  • Publication number: 20140246301
    Abstract: A conversion-to-oil apparatus is not provided with rotary members in a heating unit and in a decomposing unit in the process of changing plastic into oil, a residue tank and catalyst, wherein plastic gel is fed into a first buffer tank 2 including a cylinder disposed vertically, a second buffer tank 3 including a cylinder disposed vertically and finally a vaporizing vessel 4 including a cylinder 4a disposed laterally, a liquid surface L·S in the vaporizing vessel 4 being adjusted at a diagonal center position in the vertical direction of the cylinder by controlling both the feeding amount of plastic gel and the temperature of the liquid surface so as to be a temperature of 400° C. to 410° C., so that the rotary members, the residue tank and the catalyst become unnecessary to make the structure of the apparatus compact.
    Type: Application
    Filed: October 19, 2012
    Publication date: September 4, 2014
    Inventors: Akinori Ito, Kiyoshi Nakajima
  • Publication number: 20140216870
    Abstract: A solenoid-type variable damping force damper prevents excessive opening of a valve plate when the damper operates at a high speed, thereby achieving reduced electric power consumption. A valve body of an expansion-side valve plate is opened by pressure of hydraulic oil flowing in from an expansion-side first communication oil passage, but at this time, the oil pressures on the side of the upper surface and on the side of the under surface of the valve body are substantially equal to each other within the expansion-side pressure accumulation chamber, owing partly to a flow of the hydraulic oil passing through flow rate adjustment holes. Therefore, even when the damper undergoes an expanding action at a high speed and the hydraulic oil flows in from the expansion-side first communication oil passage at a high inflow rate, the valve body of the expansion-side valve plate is less likely to open excessively.
    Type: Application
    Filed: August 31, 2012
    Publication date: August 7, 2014
    Applicant: HONDA MOTOR CO., LTD.
    Inventor: Kiyoshi Nakajima
  • Patent number: 8770358
    Abstract: A first hydraulic fluid passage includes an annular fluid passage, an inlet hole and a notch of a magnetic passage forming ring, another notch and a communication hole of a non-magnetic passage forming ring, an outlet hole and a discharge hole of a valve plate, another discharge hole of a valve plate retainer, and a first fluid passage of a one-way valve retainer. On the other hand, a second hydraulic fluid passage includes a second fluid passage of the one-way valve retainer, and the annular fluid passage.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: July 8, 2014
    Assignee: Honda Motor Co., Ltd
    Inventor: Kiyoshi Nakajima
  • Publication number: 20140182986
    Abstract: Provided is a solenoid-type variable damping force damper that improves the strength of the piston and prevents wire break in the electromagnetic coil. A piston includes a piston main body, an expansion-side valve plate, a contraction-side valve plate, an electromagnetic coil, and a bolt. The piston main body is an integrally formed component made of a ferromagnetic material, and includes a hollow cylindrical outer yoke that is in slidable contact with an inner peripheral surface of a cylinder, a columnar inner yoke having an outer peripheral surface opposing an inner peripheral surface of the outer yoke via first and second gaps, and a connection member connecting the outer yoke and the inner yoke with each other at an axially middle position of the piston and separating the first and second gaps from each other. The electromagnetic coil is fitted in the second gap of the piston main body.
    Type: Application
    Filed: August 27, 2012
    Publication date: July 3, 2014
    Applicant: HONDA MOTOR CO., LTD.
    Inventor: Kiyoshi Nakajima
  • Publication number: 20130341140
    Abstract: A damper includes: an inner cylinder defining an inner chamber, having a slidable contact piston; an outer cylinder outside the inner cylinder and defining a reservoir chamber between the inner outer cylinders; and a damping-force control device controlling damping force by controlling a flow rate of an operating oil between the inner reservoir chambers. The control device includes a valve seat externally, projecting from the outer cylinder, having an opening for a first communicating channel connected to the inner chamber and an opening for a second communicating channel connected to the reservoir chamber, a valve element opening and closing on the valve seat by electromagnetic force, and a cap defining a variable pressure chamber between the cap and the valve element, and integrally holds the valve element and the valve seat. The variable pressure chamber can be connected to the first and the second communicating channels.
    Type: Application
    Filed: March 2, 2012
    Publication date: December 26, 2013
    Applicant: HONDA MOTOR CO., LTD.
    Inventor: Kiyoshi NAKAJIMA
  • Publication number: 20130327180
    Abstract: A multi-shaft drive device is provided that is capable of obtaining an appropriate backlash in an enmeshed state of an output side bevel gear and an input side bevel gear. An output side bevel gear (35) that is biased in the direction of an input side bevel gear by a coil spring contacts a shaft support bush attached to a wall portion (17) in an enmeshed state with the input side bevel gear. A bias direction stroke end of the output side bevel gear (35) is accordingly restricted. Moreover, the wall portion (17) is provided to a gear holder (15) fixed to a device case (10) that supports the input side bevel gear, thereby enabling the axial direction position of the output side bevel gear (35) to always be positioned at a uniform position to enmesh appropriately with the input side bevel gear.
    Type: Application
    Filed: January 26, 2012
    Publication date: December 12, 2013
    Applicant: NHK Spring Co., Ltd
    Inventors: Ryohei Shigematsu, Takafumi Hirata, Takahiro Fujii, Kiyoshi Nakajima, Shinji Iino, Soichi Nakayama
  • Publication number: 20130192418
    Abstract: Force of used spring can be weak, wear amount of power transmission member (gear or the like) can be reduced, and generation of strange noises can inhibited. When the dial cam is rotated and the recess of the outer peripheral surface faces the front end portion of the pin of the connection shaft, the connection shaft, which is biased by the force of the coil spring, is connected to the bevel gear, which engages with the bevel gear and is rotated, via the clutch teeth. Thus, the connection shaft is rotated, and the output shaft is rotated together with the connection shaft. That is, the power of the motor is transmitted to the output shaft. Since the coil spring is used for connecting the connection shaft to the bevel gear, the force of the coil spring can be reduced.
    Type: Application
    Filed: October 11, 2011
    Publication date: August 1, 2013
    Applicant: NHK SPRING CO., LTD.
    Inventors: Ryohei Shigematsu, Kenji Murakami, Kiyoshi Nakajima, Takafumi Hirata, Takahiro Fujii, Shinji Iino
  • Patent number: 8338950
    Abstract: An electronic component has a substrate, a die bonding pad provided on an upper surface of the substrate, a semiconductor element bonded onto the die bonding pad by a die bonding resin, a conductive pattern disposed adjacent to the die bonding pad, and a coating member covering the conductive pattern. At least an outer peripheral portion of a surface of the die bonding pad is made of an inorganic material. The inorganic material of the outer peripheral portion is exposed. The die bonding pad and the conductive pattern are separated by an air gap such that the coating member does not come into contact with the die bonding pad.
    Type: Grant
    Filed: February 17, 2009
    Date of Patent: December 25, 2012
    Assignee: OMRON Corporation
    Inventors: Kazuyuki Ono, Yoshio Tanaka, Kiyoshi Nakajima, Naoto Kuratani, Tomofumi Maekawa
  • Patent number: 8314485
    Abstract: An electronic component has a board, a semiconductor element mounted on an upper surface of the board, a ground electrode formed in a region surrounding the semiconductor element on the upper surface of the board, a conductive cap that overlaps the board such that the semiconductor element is covered therewith, and a conductive joining member that joins a whole periphery of a lower surface of the conductive cap to the ground electrode. The conductive cap includes a pressing portion on the lower surface thereof The lower surface of the conductive cap and the ground electrode are joined by the conductive joining member on an outer peripheral side of the pressing portion.
    Type: Grant
    Filed: February 16, 2009
    Date of Patent: November 20, 2012
    Assignee: OMRON Corporation
    Inventors: Kazuyuki Ono, Yoshio Tanaka, Kiyoshi Nakajima, Naoto Kuratani, Tomofumi Maekawa
  • Patent number: 8274797
    Abstract: An electronic component has a printed substrate having a die bonding portion, a semiconductor element rigidly bonded to the die bonding portion of the printed substrate by a die bonding resin, and a wire bonding terminal formed by a conductor pattern on the printed substrate that is connected to the semiconductor element by a bonding wire. A groove portion located at a level lower than the conductor pattern of the printed substrate is formed in a region located on at least a die bonding portion side in a region surrounding the wire bonding terminal.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: September 25, 2012
    Assignee: OMRON Corporation
    Inventors: Kazuyuki Ono, Yoshio Tanaka, Kiyoshi Nakajima, Naoto Kuratani, Tomofumi Maekawa
  • Patent number: 8240439
    Abstract: A vehicle damper of variable damping force including a cylinder, a piston and valves is disclosed. The valves have opening/closing parts and supporting parts. The opening/closing parts and the supporting parts are positioned separately so that a sufficient distance is obtained. Lengthening the distance from the supporting parts to the opening/closing parts makes it possible to reduce the opening and closing force of the opening/closing parts and to obtain highly responsive valves.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: August 14, 2012
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kiyoshi Nakajima, Tatsuhiro Tomari, Toru Sukigara
  • Publication number: 20120144943
    Abstract: Output gears are disposed so as to be movable toward and counter to plural second input gears to which rotation of the motor is transmitted, and so as to be biased toward the plural second input gears. A cam, which has plural recesses provided at the periphery thereof, is disposed at the inside of the output gear. The cam is rotated, and a pin of the output gear enters the recess, so that the output gear is moved toward the second input gear, and the output gear is engaged with the second input gear.
    Type: Application
    Filed: August 27, 2010
    Publication date: June 14, 2012
    Applicant: NHK SPRING CO., LTD.
    Inventors: Ryohei Shigematsu, Kiyoshi Nakajima, Kenji Murakami, Takahiro Fujii, Shinji Iino, Hiroshi Yagame
  • Publication number: 20120139111
    Abstract: An electronic component has a substrate, a die bonding pad provided on an upper surface of the substrate, a semiconductor element bonded onto the die bonding pad by a die bonding resin, a conductive pattern disposed adjacent to the die bonding pad, and a coating member covering the conductive pattern. At least an outer peripheral portion of a surface of the die bonding pad is made of an inorganic material. The inorganic material of the outer peripheral portion is exposed. The die bonding pad and the conductive pattern are separated by an air gap such that the coating member does not come into contact with the die bonding pad.
    Type: Application
    Filed: February 17, 2009
    Publication date: June 7, 2012
    Applicant: OMRON CORPORATION
    Inventors: Kazuyuki Ono, Yoshio Tanaka, Kiyoshi Nakajima, Naoto Kuratani, Tomofumi Maekawa
  • Patent number: 7922181
    Abstract: A first rotor (24; 124) and a second rotor (25; 125) are arranged in a coaxial and mutually rotatable relationship and are provided with a first driven gear (41; 141) and a second driven gear (42; 142), respectively. A drive shaft (31; 131) is also provided with a first drive gear (43; 143) and a second drive gear (44; 144) which are commonly connected to an output shaft of an electric motor (32; 132), and mesh with the first and second driven gears, respectively, at slightly different gear ratios. The first and second rotors are connected via a thread feed mechanism (36; 136) that converts a relative rotation between the first and second rotors into an axial linear movement between the first and second rotors that is used for changing a distance between a vehicle body part and a corresponding end of a suspension spring in a vehicle height adjusting system (9; 109).
    Type: Grant
    Filed: January 4, 2007
    Date of Patent: April 12, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takehiko Hakui, Hajime Hirata, Hajime Kajiwara, Kiyoshi Nakajima, Yoshimitsu Akuta, Kunimichi Hatano
  • Publication number: 20110044017
    Abstract: An electronic component has a printed substrate having a die bonding portion, a semiconductor element rigidly bonded to the die bonding portion of the printed substrate by a die bonding resin, and a wire bonding terminal formed by a conductor pattern on the printed substrate that is connected to the semiconductor element by a bonding wire. A groove portion located at a level lower than the conductor pattern of the printed substrate is formed in a region located on at least a die bonding portion side in a region surrounding the wire bonding terminal.
    Type: Application
    Filed: February 18, 2009
    Publication date: February 24, 2011
    Applicant: OMRON CORPORATION
    Inventors: Kazuyuki Ono, Yoshio Tanaka, Kiyoshi Nakajima, Naoto Kuratani, Tomofumi Maekawa