Patents by Inventor Kazuo Furukawa

Kazuo Furukawa 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).

  • Publication number: 20240145574
    Abstract: A manufacturing method of a circuitry including a planar diode that can improve manufacturing precision of a connection between the planar diode and a circuit element connected to an electrode of the planar diode is provided. The manufacturing method of the circuitry including the planar diode includes: forming an insulating layer having a first pattern shape on a substrate; and monolithically forming a functional material layer having a second pattern shape complementary to the first pattern shape on the substrate. The functional material layer includes a material that functions as a planar diode having a rectifying property based on a shape and a size. The second pattern shape has a shape of a circuitry including the planar diode, a first circuit element connected to a first electrode of the planar diode, and a second circuit element connected to a second electrode of the planar diode.
    Type: Application
    Filed: March 9, 2022
    Publication date: May 2, 2024
    Inventors: Shinji NOZAKI, Kazuo UCHIDA, Minoru FURUKAWA, Yuji TAKEDA
  • Patent number: 9835217
    Abstract: A coil spring modeling apparatus includes a first attachment member disposed on a lower spring seat, a second attachment member disposed on an upper spring seat, an actuator unit formed of a Stewart-platform-type parallel mechanism, a hydraulic pressure supply device, a torsion detection mechanism, and a controller. The torsion detection mechanism is constituted of displacement gauges such as a linear variable differential transformer. The displacement gauges are provided on hydraulic cylinders, and detect amounts of displacement relative to the reference lengths of the hydraulic cylinders, respectively. The controller calculates a relative torsional angle between the first attachment member and the second attachment member based on the detected displacement.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: December 5, 2017
    Assignees: NHK SPRING CO., LTD., NHK INTERNATIONAL CORPORATION
    Inventors: Takahiro Nakamura, Kazuo Furukawa, Senri Moriyama, Ryuichi Sato, Shinichi Nishizawa
  • Patent number: 9811067
    Abstract: A coil spring modeling apparatus includes a first attachment member disposed on a lower spring seat, a second attachment member disposed on an upper spring seat, an actuator unit formed of a Stewart-platform-type parallel mechanism, a spring height detection mechanism, and a controller. The spring height detection mechanism is constituted of displacement gauges such as a linear variable differential transformer. These gauges are provided on hydraulic cylinders, and detect amounts of displacement relative to the reference lengths of the hydraulic cylinders, respectively. A hydraulic pressure supply device is controlled by the controller and supplies fluid pressure according to the displacement detected by the gauges to the respective hydraulic cylinders.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: November 7, 2017
    Assignees: NHK SPRING CO., LTD., NHK INTERNATIONAL CORPORATION
    Inventors: Takahiro Nakamura, Kazuo Furukawa, Senri Moriyama, Ryuichi Sato, Shinichi Nishizawa
  • Patent number: 9470590
    Abstract: A coil spring modeling apparatus includes an actuator unit formed of a Stewart-platform-type parallel mechanism, a first inner load cell accommodated in a first attachment member, a second inner load cell accommodated in a second attachment member, and a rotation support mechanism. The actuator unit is rotatably supported by the rotation support mechanism about an axis. The first inner load cell is arranged on the first seat adapter coaxially with the rotation support mechanism, and detects an axial force acting on the lower spring seat and a moment. The second inner load cell is arranged under the second seat adapter coaxially with the rotation support mechanism, and detects an axial force acting on the upper spring seat and a moment.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: October 18, 2016
    Assignees: NHK SPRING CO., LTD., NHK INTERNATIONAL CORPORATION
    Inventors: Takahiro Nakamura, Kazuo Furukawa, Senri Moriyama, Ryuichi Sato, Shinichi Nishizawa
  • Publication number: 20160239004
    Abstract: A coil spring modeling apparatus includes a first attachment member disposed on a lower spring seat, a second attachment member disposed on an upper spring seat, an actuator unit formed of a Stewart-platform-type parallel mechanism, a spring height detection mechanism, and a controller. The spring height detection mechanism is constituted of displacement gauges such as a linear variable differential transformer. These gauges are provided on hydraulic cylinders, and detect amounts of displacement relative to the reference lengths of the hydraulic cylinders, respectively. A hydraulic pressure supply device is controlled by the controller and supplies fluid pressure according to the displacement detected by the gauges to the respective hydraulic cylinders.
    Type: Application
    Filed: February 12, 2015
    Publication date: August 18, 2016
    Applicants: NHK SPRING CO., LTD., NHK INTERNATIONAL CORPORATION
    Inventors: Takahiro NAKAMURA, Kazuo FURUKAWA, Senri MORIYAMA, Ryuichi SATO, Shinichi NISHIZAWA
  • Publication number: 20160238473
    Abstract: A coil spring modeling apparatus includes an actuator unit formed of a Stewart-platform-type parallel mechanism, a first inner load cell accommodated in a first attachment member, a second inner load cell accommodated in a second attachment member, and a rotation support mechanism. The actuator unit is rotatably supported by the rotation support mechanism about an axis. The first inner load cell is arranged on the first seat adapter coaxially with the rotation support mechanism, and detects an axial force acting on the lower spring seat and a moment. The second inner load cell is arranged under the second seat adapter coaxially with the rotation support mechanism, and detects an axial force acting on the upper spring seat and a moment.
    Type: Application
    Filed: February 12, 2015
    Publication date: August 18, 2016
    Applicants: NHK INTERNATIONAL CORPORATION, NHK SPRING CO., LTD.
    Inventors: Takahiro NAKAMURA, Kazuo FURUKAWA, Senri MORIYAMA, Ryuichi SATO, Shinichi NISHIZAWA
  • Publication number: 20160238098
    Abstract: A coil spring modeling apparatus includes a first attachment member disposed on a lower spring seat, a second attachment member disposed on an upper spring seat, an actuator unit formed of a Stewart-platform-type parallel mechanism, a hydraulic pressure supply device, a torsion detection mechanism, and a controller. The torsion detection mechanism is constituted of displacement gauges such as a linear variable differential transformer. The displacement gauges are provided on hydraulic cylinders, and detect amounts of displacement relative to the reference lengths of the hydraulic cylinders, respectively. The controller calculates a relative torsional angle between the first attachment member and the second attachment member based on the detected displacement.
    Type: Application
    Filed: February 12, 2015
    Publication date: August 18, 2016
    Applicants: NHK INTERNATIONAL CORPORATION, NHK SPRING CO., LTD.
    Inventors: Takahiro NAKAMURA, Kazuo FURUKAWA, Senri MORIYAMA, Ryuichi SATO, Shinichi NISHIZAWA
  • Patent number: 8627642
    Abstract: A clippings collecting-discharging device includes: a bucket on a lawn mowing unit divided into a main body part including a clippings flow inlet and a movable part connected to an upper end of the main body part, and can be operated between a closed position where the main body part and the movable part abut against each other and an open position where the movable part is rotated upward and separated from the main body part; a discharge plate in the bucket positioned near the inlet in a lying posture when the bucket is closed; and a discharge mechanism where the discharge plate stands up toward an opening between the main body part and the movable part while interlocking with the operation of the bucket, which position is changed to the open position.
    Type: Grant
    Filed: January 4, 2012
    Date of Patent: January 14, 2014
    Assignee: Mamiya-Op Co., Ltd.
    Inventors: Koji Takahashi, Tomoji Utsugi, Kazuo Furukawa
  • Publication number: 20130047570
    Abstract: A clippings collecting-discharging device saves labor in an operation for discharging collected clippings. The clippings collecting-discharging device includes: a bucket on a lawn mowing unit divided into a main body part including a clippings flow inlet and a movable part connected to an upper end of the main body part, and can be operated between a closed position where the main body part and the movable part abut against each other and an open position where the movable part is rotated upward and separated from the main body part; a discharge plate in the bucket positioned near the inlet in a lying posture when the bucket is closed; and a discharge mechanism where the discharge plate stands up toward an opening, between the main body part and the movable part while interlocking with the operation of the bucket, which position is changed to the open position.
    Type: Application
    Filed: January 4, 2012
    Publication date: February 28, 2013
    Applicant: MAMIYA-OP Co., Ltd.
    Inventors: Koji TAKAHASHI, Tomoji Utsugi, Kazuo Furukawa
  • Publication number: 20080164963
    Abstract: TASK To improve the attenuation effect of a magnetic actuator against external disturbances. SOLUTION So that an attenuation effect owing to an electromotive force may be obtained in the magnetic actuator when a moveable part (coil support member and lens holder) supported by sheet springs is displaced, an electric resonance circuit is formed by connecting an accessory coil 26 in parallel to a drive coil 11 mounted on the moveable part, and the resonance frequency of the circuit electric resonance circuit is made to agree with that of a spring mass system of the magnetic actuator. As the drive frequency is typically in a range that substantially differs from the resonance frequency, a large damping force, effective against the resonant condition owing to external disturbances, can be obtained without substantially affecting the drive property.
    Type: Application
    Filed: April 28, 2005
    Publication date: July 10, 2008
    Applicant: NHK SPRING CO., LTD.
    Inventors: Jun Tominaga, Atsuo Matsumoto, Kazuo Furukawa
  • Publication number: 20070158011
    Abstract: An ultrasonic welding structure for pressing a horn (3) against a columnar heating target consisting of a resin (10), applying a high frequency vibration from the horn (3) to the heating target, and thereby fusion-bonding the heating target to a predetermined bonding target, wherein the bonding target includes an insertion hole for inserting the heating target, and the insertion hole of the bonding target includes a notch formed in an inner edge of the insertion hole on a side facing the resonator. The notch of the insertion hole can be formed to serve as an acceptance unit that accepts the heating target in a molten state. Alternatively, the notch of the insertion hole can be formed to serve as a stress relaxing unit that relaxes a stress generated within the bonding target by contacting with the inner edge of the insertion hole.
    Type: Application
    Filed: February 3, 2005
    Publication date: July 12, 2007
    Inventors: Jun Tominaga, Ryohei Shigematsu, Kazuo Furukawa
  • Patent number: 5058545
    Abstract: An oil pan for an internal combustion engine having an engine lubrication system. The oil pan comprises a shallow bottom section and a sump. The shallow bottom section includes an inclined surface which gradually becomes lower in level toward the sump and toward the downstream of the oil flow caused by the rotation of the crankshaft. Therefore, the lubrication oil dropped on the shallow bottom section is effectively returned into the sump through the lower side of the inclined surface under the action of a force caused by the rotation of the crankshaft or the like.
    Type: Grant
    Filed: August 31, 1990
    Date of Patent: October 22, 1991
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Toshihiro Hirai, Shuji Kurosaka, Kazuo Furukawa
  • Patent number: 4962636
    Abstract: A mower is provided which includes a pair of link mechanisms for mounting a cutter unit on the side of a mower body in suspended form. Each link mechanism includes a pair of lifting links. The paired lifting links are pivotably connected to the side of the mower body at opposing end portions. The other end portions of the paired lifting links are connected together so that the paired lifting links can be rotated upward and downward about the respective pivot points. The cutter unit is supported by respective intermediate portions of the lifting links in suspended form, and lifted by rotating the lifting links of the paired link mechanisms upward and downward in a linked relation.
    Type: Grant
    Filed: March 30, 1989
    Date of Patent: October 16, 1990
    Assignee: Kubota Ltd.
    Inventors: Keiichi Sampei, Yosihito Dei, Kazuo Furukawa, Katsumi Fukumoto, Yoshihiro Kato
  • Patent number: 4941863
    Abstract: A stepless speed change mechanism in a belt transmission device comprising a first belt passed through a groove in a drive pulley and a first groove in an intermediate pulley, and a second belt passed through a second groove in the intermediate pulley and a groove in a driven pulley for transmitting rotation from the drive pulley to the driven pulley via the intermediate pulley. The first groove and the second groove of the intermediate pulley have an axial width gradually decreasing radially inwardly of the pulley. A partition provided between and defining the first and second grooves of the intermediate pulley is movable axially of the pulley to thereby vary the pitch diameter of each of the first and second grooves and steplessly change the speed of rotation to be transmitted from the drive pulley to the driven pulley.
    Type: Grant
    Filed: March 28, 1989
    Date of Patent: July 17, 1990
    Assignee: Kubota Ltd.
    Inventors: Keiichi Sampei, Masami Kawasaki, Yosihito Dei, Katsumi Fukumoto, Kazuo Furukawa
  • Patent number: 4934989
    Abstract: A belt transmission in which a transmission belt is reeved around each of a reversible drive pulley and a driven pulley and which includes a pair of tension pulleys provided respectively on the taut side and the slack side of the belt in contact therewith. The two tension pulleys are biased by an elastic body to tension the belt. A first link is connected to one of the tension pulleys, and a second link to the other tension pulley. The two links are each pivotally movable in a direction for the corresponding tension pulley to tension the belt and in a direction for the tension pulley to relieve the tension. The two links are pivotally movable about a common axis. When the direction of rotation of the drive pulley is changed, reversing the taut side and the slack side of the belt, the tension imparted to the belt by the tension pulleys is automatically adjusted properly by the pivotal movement of the two links.
    Type: Grant
    Filed: March 28, 1989
    Date of Patent: June 19, 1990
    Assignee: Kubots, Ltd.
    Inventors: Kazuo Furukawa, Keiichi Sampei, Yoshihiro Kato, Yosihito Dei, Katsumi Fukumoto
  • Patent number: 4829754
    Abstract: A front mower includes a cutter unit having ground contact wheels and liftably attached to the front of a vehicle by a link assembly and a hydraulic piston-cylinder assembly for lifting or lowering the cutter unit. The link assembly includes a pair of first links each having a rear end pivoted to the vehicle and a pair of second links each having a front end pivoted to the deck of the mower, the front end of each first link being inflexibly and removably fixed to the rear end of each second link by a locking pin. A spring is provided between each first link and the vehicle. The cutter unit can be attached to and removed from the vehicle without removing the spring.
    Type: Grant
    Filed: December 16, 1987
    Date of Patent: May 16, 1989
    Assignee: Kubota Ltd.
    Inventors: Teruo Shimamura, Takao Sakatsuji, Kazuo Furukawa
  • Patent number: 4233669
    Abstract: A memory control system comprises a memory unit including a plurality of chips each having a shift register type memory having a plurality of information loops, the number of chips being larger than a predetermined number, the predetermined number of bits out of those bits which are read from or written into the information loops of the respective chips at the same timing constituting a unit information; and an additional memory which stores information indicative of normal loop condition or defective loop condition for each of the information loops in each of the chips and information indicative of whether the number of normal loops in each information loop group corresponding to the bits which are read or written at the same timing is larger than said predetermined number or not.
    Type: Grant
    Filed: April 19, 1978
    Date of Patent: November 11, 1980
    Assignees: Nippon Telegraph and Telephone Public Corporation, Hitachi, Ltd.
    Inventors: Kazuo Furukawa, Sumio Furukawa
  • Patent number: 4183090
    Abstract: A magnetic bubble memory equipment includes means for receiving address information for a plurality of access requests as a whole, and means for executing address matching operations in parallel for a plurality of addresses. Read-out or write-in command information is fetched for each of the access requests in the sequential order as the coincidence is found in the matching of address and data transfer is sequentially executed in accordance with the command information, thereby to reduce the effective access time for the plurality of the access requests.
    Type: Grant
    Filed: April 18, 1978
    Date of Patent: January 8, 1980
    Assignee: Hitachi, Ltd.
    Inventors: Kazuo Furukawa, Takeshi Masuda, Masakatu Nunotani, Norio Amano
  • Patent number: 4145736
    Abstract: A control device which controls a plurality of controlled devices by time shared control in a microprogram control system and has one control memory, a plurality of microinstruction registers, the outputs of which are applied to the controlled devices, circuits for memorizing microinstruction execution requests corresponding to microinstruction type and the controlled devices, and a selecting circuit for selecting a microinstruction register for storing a microinstruction read out from said control memory in each machine cycle and the controlled devices to be controlled. The field of the microinstruction indicates the execution and type of the next microinstruction after the next machine cycle to a given controlled device.
    Type: Grant
    Filed: February 14, 1977
    Date of Patent: March 20, 1979
    Assignees: Nippon Telegraph and Telephone Public Corporation, Nippon Electric Co., Ltd., Hitachi, Ltd., Oki Electric Industry Co., Ltd., Fujitsu Limited
    Inventors: Takahiko Yamada, Shigeki Yamada, Yoshio Sakurai, Kazuo Furukawa, Syoji Kajitsuka, Toshio Awaji