Patents by Inventor Hirotaka Shibata

Hirotaka Shibata 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: 11924740
    Abstract: A signal forwarding system includes: a plurality of signal forwarding devices forming a plurality of communication routes between a slave station and a master station; and a route control device that determines a communication route, wherein the route control device includes at least: a communication route calculation unit that calculates a communication route in response to a route switching request; and a forward destination setting instruction unit that outputs forward destination setting information based on the communication route, the signal forwarding devices include at least: a forward destination setting instruction acquisition unit that acquires the forward destination setting information; a forward destination set unit that changes a forward destination based on the forward destination setting information; and a forward unit that outputs input traffic based on the forward destination, and any of the route control device and the signal forwarding devices includes: a traffic monitor unit; a non-signa
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: March 5, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Naotaka Shibata, Hiroyuki Uzawa, Hirotaka Ujikawa, Yoichi Fukada, Jun Terada
  • Patent number: 11615125
    Abstract: A relevance searching method performed by a computer, the relevance searching method includes generating a combined database by combining a plurality of databases each including a plurality of elements and relevance information indicating direct relevance between two elements in the plurality of elements; and searching for relevance between two elements that do not have direct relevance by using the combined database.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: March 28, 2023
    Assignee: FUJITSU LIMITED
    Inventors: Kenichi Kobayashi, Shinichiro Tago, Hirotaka Shibata, Haruyasu Ueda
  • Publication number: 20200342015
    Abstract: A relevance searching method performed by a computer, the relevance searching method includes generating a combined database by combining a plurality of databases each including a plurality of elements and relevance information indicating direct relevance between two elements in the plurality of elements; and searching for relevance between two elements that do not have direct relevance by using the combined database.
    Type: Application
    Filed: April 16, 2020
    Publication date: October 29, 2020
    Applicant: FUJITSU LIMITED
    Inventors: Kenichi KOBAYASHI, Shinichiro Tago, Hirotaka Shibata, Haruyasu Ueda
  • Patent number: 6889795
    Abstract: An electric power steering device in which a motor shaft and a rack bar form a diagonal intersection. The power transmission includes: a drive gear rotating in tandem with the motor shaft and forming a bevel gear with linearly extending teeth; a ball screw mechanism disposed co-axial with the rack bar and converting a rotational motion to a linear motion; and a driven gear rotating in tandem with a nut of the ball screw mechanism, meshing with and moving in tandem with the drive gear, and forming a bevel gear with linearly extending teeth. The drive gear and/or the driven gear can be adjusted so that backlash between the two elements can be adjusted in a continuous, non-stepped manner.
    Type: Grant
    Filed: September 24, 2003
    Date of Patent: May 10, 2005
    Assignee: Toyoda Koki Kabushiki Kaisha
    Inventors: Hirotaka Shibata, Mikio Suzuki, Osamu Watanabe, Masanari Torii, Susumu Honaga
  • Publication number: 20040094352
    Abstract: An electric power steering device in which a motor shaft and a rack bar form a diagonal intersection. Power transmission means include: a drive gear rotating in tandem with the motor shaft and forming a bevel gear with linearly extending teeth; a ball screw mechanism disposed co-axial with the rack bar and converting a rotational motion to a linear motion; and a driven gear rotating in tandem with a nut of the ball screw mechanism, meshing with and moving in tandem with the drive gear, and forming a bevel gear with linearly extending teeth. The drive gear and/or the driven gear can be adjusted so that backlash between the two elements can be adjusted in a continuous, non-stepped manner.
    Type: Application
    Filed: September 24, 2003
    Publication date: May 20, 2004
    Applicant: Toyoda Koki Kabushiki Kaisha
    Inventors: Hirotaka Shibata, Mikio Suzuki, Osamu Watanabe, Masanari Torii, Susumu Honaga
  • Patent number: 5702993
    Abstract: A triaxial fabric composed of carbon fiber strands is provided, which has a crimp releasing ratio (L'-L)/L satisfying ?(L.sub.0 -L)/L.sub.0 !.times.0.7.gtoreq.(L'-L)/L.gtoreq.0. Since the crimps of the fiber strands composing the fabric are preliminarily fixed, fiber breakage due to abrasion in the intersecting portions of the fabric is prevented, whereby a high quality triaxial fabric is obtained. A method for the production of such a fabric is also provided.
    Type: Grant
    Filed: July 3, 1996
    Date of Patent: December 30, 1997
    Assignees: Nippon Steel Corporation, Sakase Adteck Co.
    Inventors: Kenji Kubomura, Hiromi Kimura, Hirotaka Shibata
  • Patent number: 4898137
    Abstract: Several embodiments of vehicles having automatic or manual speed control. The manual speed control permits the operator to control the speed of the engine and the automatic speed control is effective when a power takeoff shaft is being driven for automatic speed control under this condition. In each embodiment, the automatic speed control includes a governor that is driven only when the power shaft takeoff is being driven. In one embodiment, a throttle valve controls the engine speed and the manual and automatic speed controls alternatively operate the throttle valve through selectively engageable couplings that are operated in response to shifting into and out of the power takeoff mode. A number of other arrangements are also illustrated and described that provide different throttle valve arrangements for controlling the speed automatically or manually.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: February 6, 1990
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Minoru Fujita, Hirotaka Shibata
  • Patent number: 4805572
    Abstract: Several embodiments of vehicles having automatic or manual speed control. The manual speed control permits the operator to control the speed of the engine and the automatic speed control is effective when a power takeoff shaft is being driven for automatic speed control under this condition. In each embodiment, the automatic speed control includes a governor that is driven only when the power shaft takeoff is being driven. In one embodiment, a throttle valve controls the engine speed and the manual and automatic speed controls alternatively operate the throttle valve through selectively engageable couplings that are operated in response to shifting into and out of the power takeoff mode. A number of other arrangements are also illustrated and described that provide different throttle valve arrangements for controlling the speed automatically or manually.
    Type: Grant
    Filed: March 31, 1986
    Date of Patent: February 21, 1989
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Minoru Fujita, Hirotaka Shibata
  • Patent number: 4744432
    Abstract: Several embodiments of balloon tired, off the road vehicles embodying improved cooling systems. In each embodiment, the engine is surrounded by a cooling shroud and a fan is provided for driving air across the engine. The fan is offset from the engine crankshaft axis and is driven by it. In some embodiments, foreign matter is precluded from entry into the shroud inlet by positioning the inlet in a protected area such as over the fender, under the body, under the fuel tank, or under the seat.
    Type: Grant
    Filed: January 22, 1986
    Date of Patent: May 17, 1988
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Hirotaka Shibata, Masahiro Nishioka
  • Patent number: 4593656
    Abstract: Several embodiments of induction systems for motor vehicles that improve running at low speeds. A plenum chamber is provided which communicates with the intake passage downstream of the throttle valve so as to improve flow dynamics particularly at these running conditions. The plenum chamber is supported by the vehicle chassis independently of the engine and communicates with the induction passage via a flexible conduit.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: June 10, 1986
    Assignee: Yamaha Hatsukoki Kabushiki Kaisha
    Inventors: Hirotaka Shibata, Takayoshi Muramatsu
  • Patent number: 4368703
    Abstract: A two stroke engine having an exhaust port formed in the cylinder wall. At the upper portion of the exhaust port, there is provided a rotary type exhaust timing control valve which is adapted to be actuated by a centrifugal governor device to control the exhaust timing in accordance with the engine speed. The centrifugal governor device has a governor shaft which extends coaxially with the engine crankshaft and directly connected at one end with the adjacent end of the crankshaft. At the other end, the crankshaft is provided with a magneto device so that the magneto does not have any magnetic influence on the centrifugal governor device.
    Type: Grant
    Filed: January 7, 1981
    Date of Patent: January 18, 1983
    Assignee: Yamaha, Hatsudoki, Kabushiki, Kaisha
    Inventor: Hirotaka Shibata
  • Patent number: 4325335
    Abstract: A two stroke engine having an exhaust port formed in the cylinder wall. At the upper portion of the exhaust port, there is provided a rotary type exhaust timing control valve which is adapted to be actuated by a centrifugal governor device to control the exhaust timing in accordance with the engine speed. The centrifugal governor device has a governor shaft which extends coaxially with the engine crankshaft and directly connected at one end with the adjacent end of the crankshaft.
    Type: Grant
    Filed: May 27, 1980
    Date of Patent: April 20, 1982
    Assignee: Yamaha, Hatsudoki, Kabushiki, Kaisha
    Inventor: Hirotaka Shibata
  • Patent number: 4171729
    Abstract: A coolant circulating system for a motorcycle having a liquid cooled engine. The system includes a radiator mounted to the front fork, an engine mounted to the frame, pipes from the engine, pipes from the radiator, and a fluid conducting, two-channel swivel connector on the steering shaft to enable the radiator and engine to be interconnected without requiring flexure of the pipes. Preferably the swivel connector is a body separate from and attachable to the steering shaft.
    Type: Grant
    Filed: May 26, 1977
    Date of Patent: October 23, 1979
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Hirotaka Shibata
  • Patent number: 4016945
    Abstract: A motorcycle driven by a water cooled engine mounted on a frame includes a radiator attached to a front fork rotated with a handle. A water circulating system between the engine and the radiator is constructed by a head pipe and a steering shaft rotatably inserted through the head pipe.
    Type: Grant
    Filed: March 3, 1976
    Date of Patent: April 12, 1977
    Assignee: Yamaha, Hatsudoki Kabushiki Kaisha
    Inventor: Hirotaka Shibata