Patents by Inventor Toshiaki Hamada

Toshiaki Hamada 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: 11913775
    Abstract: The present invention provides an intra-hoistway measurement system automatically measuring dimensions within an elevator hoistway prior to elevator installation to reduce labor of workers. An intra-hoistway measurement system according to the present invention includes: a reference laser device that is mounted to a structure on a ceiling or in an upper portion of the hoistway for an elevator and emits a laser beam toward a lowermost part; a mobile measuring device that has a plane measuring device to measure horizontal dimensions within the hoistway; and a moving device that is mounted to the structure on the ceiling or in the upper portion of the hoistway and moves the mobile measuring device up and down. The mobile measuring device has a reference laser detection device that detects the laser beam emitted from the reference laser device, and an attitude detection device that detects its own attitude.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: February 27, 2024
    Assignee: HITACHI BUILDING SYSTEMS CO., LTD.
    Inventors: Toshiaki Hatano, Daisuke Matsuka, Makoto Hattori, Yuta Hamada, Hirofumi Taguchi, Masato Itou
  • Patent number: 11752809
    Abstract: In a tire 22, a length from a center PM in an axial direction of a boundary 60 between a core 48 and an apex 50 to an outer edge PA of the apex 50 is not less than 10 mm and not greater than 15 mm. In a state where the tire 22 is mounted on a normal rim and an internal pressure of the tire 22 is adjusted to 10% of a normal internal pressure, a main body portion 54 of a carcass ply 52 extending along an inner surface 62 of the apex 50 is tilted relative to the axial direction, and an angle of the main body portion 54 relative to the axial direction is not less than 40° and not greater than 60°.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: September 12, 2023
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Toshiaki Hamada, Masahiro Tatsuta, Hiroki Uno, Hiroto Takenaka
  • Publication number: 20220371372
    Abstract: Provided is a pneumatic tire having excellent abrasion resistance and excellent handling stability on an extremely cold road while having a reduced weight. The present disclosure relates to a pneumatic tire, including a tread having a hardness at ?20° C. of 90 or less, a hardness at 30° C. of 60 or more, and a maximum thickness of 8.5 mm or less, and a carcass including one carcass ply.
    Type: Application
    Filed: May 7, 2020
    Publication date: November 24, 2022
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Masaki OSHIMO, Ryoji MATSUI, Toshiaki HAMADA
  • Publication number: 20200156646
    Abstract: A road degradation information collecting device includes: a position detection unit that detects a traveling position of a vehicle; a speed detection unit that detects a speed of the vehicle; a degradation detection unit that detects degradation in a road surface of a road where the vehicle is traveling; a timing calculation unit that calculates a timing at which the vehicle passes through a position separated by a predetermined distance from a degradation position that is the traveling position at which the degradation is detected among traveling positions detected by the position detection unit on the basis of the speed detected by the speed detection unit; and a recording control unit that records a captured image obtained by imaging the road surface with an imaging unit the vehicle at the timing calculated by the timing calculation unit, on a storage unit in correlation with the degradation position.
    Type: Application
    Filed: November 15, 2019
    Publication date: May 21, 2020
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Toshiro Umemura, Toshiaki Hamada, Shuji Yamamoto
  • Publication number: 20200001665
    Abstract: In a tire 22, a length from a center PM in an axial direction of a boundary 60 between a core 48 and an apex 50 to an outer edge PA of the apex 50 is not less than 10 mm and not greater than 15 mm. In a state where the tire 22 is mounted on a normal rim and an internal pressure of the tire 22 is adjusted to 10% of a normal internal pressure, a main body portion 54 of a carcass ply 52 extending along an inner surface 62 of the apex 50 is tilted relative to the axial direction, and an angle of the main body portion 54 relative to the axial direction is not less than 40° and not greater than 60°.
    Type: Application
    Filed: June 24, 2019
    Publication date: January 2, 2020
    Applicant: Sumitomo Rubber Industries, Ltd.
    Inventors: Toshiaki HAMADA, Masahiro TATSUTA, Hiroki UNO, Hiroto TAKENAKA
  • Publication number: 20080283325
    Abstract: An object of the invention is to increase driving force of driving wheels at starting a vehicle, when the vehicle runs on a ?-sprit road. At first, a road surface for a driving wheel is detected, which has a higher coefficient of friction than that of a road surface for the other driving wheel. An operation for controlling grounded load of the driving wheels is carried out during a period, in which differential rotations of the driving wheels are limited. The grounded load of the driving wheel which is traveling on a high-? road is increased, whereas the grounded load of the other driving wheel which is traveling on a low-? road is decreased.
    Type: Application
    Filed: May 14, 2008
    Publication date: November 20, 2008
    Inventors: Hiroyuki Kodama, Yoshiyuki Yasui, Masahiro Inden, Toshiaki Hamada, Katsuhiko Sato
  • Patent number: 6860570
    Abstract: A vehicular parking brake apparatus includes right and left-side brakes connected to an electric motor via a cable and an equalizer, so that the operating forces of the brakes become equal. In this case, the operating forces of the right and left brakes are commonly controlled based on one of the wheels that exhibits a greater rate of slip. Therefore, it is possible to avoid a rate of slip of the right and left wheels from becoming excessively great. The electric motor is controlled taking into account a transfer delay of the cable. Therefore, the slip rates of the right and left wheels can be quickly converged to a proper state. Thus, in a case where a parking brake is operated during the running of the vehicle, the operating force of the parking brake is controlled so that the state of slip of the wheels is a proper state.
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: March 1, 2005
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki Kaisha
    Inventors: Akihiro Yanaka, Shoichi Shono, Toshiaki Hamada, Yoshikazu Tachiiri
  • Publication number: 20040246637
    Abstract: A motor condition detection apparatus detects motor driving voltage of driving electric source supplied to a motor and detects voltage of a control device for driving and controlling the motor. The apparatus calculates voltage difference between the motor driving voltage and the voltage of the control device. The apparatus provisionally determines the motor locking condition based on the voltage difference during driving of the motor and the apparatus stops driving the motor after the motor locking condition is provisionally determined. The apparatus detects regenerative voltage of the motor when driving of the motor is stopped and finally determines the motor locking condition based on the regenerative voltage.
    Type: Application
    Filed: March 26, 2004
    Publication date: December 9, 2004
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Wataru Tanaka, Toshiaki Hamada
  • Patent number: 6631796
    Abstract: A vehicle parking brake system having an AUTO selector for selectively establishing an automatic mode and a manual mode, parking brake units, and an electronic control unit operable in the automatic mode to automatically activate the parking brake units to apply a parking brake to vehicle rear left and right wheels (RW1, RW2) when the vehicle is in a parked state, and to automatically de-activate the parking brake units to remove the parking brake from the vehicle wheel, and in the manual mode to selectively apply and remove the parking brake to and from the vehicle wheels according to operations of a MANUAL MODE control switch.
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: October 14, 2003
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Akihiro Yanaka, Shoichi Shono, Toshiaki Hamada
  • Patent number: 6474750
    Abstract: A vehicle brake control device includes a brake member, a wheel brake cylinder mounted on a wheel, and a master cylinder. The master cylinder generates a master cylinder hydraulic pressure in response to an operating force applied to the brake member. The brake control device also includes an automatic pressure increasing control device, a braking force control device, a coefficient of friction detecting device that detects a coefficient of friction of the road, and an automatic pressure increasing restraining device. The automatic pressure increasing control device controls automatic pressure increasing operation of the master cylinder based on the operating force applied to the brake member. The braking force control device controls the increased master cylinder hydraulic pressure supplied to the wheel brake cylinder.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: November 5, 2002
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Wataru Tanaka, Toshiaki Hamada, Hirofumi Nitta
  • Patent number: 6430493
    Abstract: A vehicular brake control device makes it possible to detect a failure or malfunction in closing an electromagnetic valve which is placed between a master cylinder and each of wheel cylinders. The vehicular brake control device includes a pressure application device which is capable of applying a hydraulic pressure automatically, i.e., regardless of a brake pedal depression, to each of wheel cylinders by way of a hydraulic pressure control device 17 from a master cylinder 20 and an ECU 18 which drives the pressure application unit 12 and the hydraulic pressure control device 17 to adjust a braking force of each of wheels. The hydraulic pressure control device 17 includes a set of pressure-maintaining and pressure-reducing valves for each wheel. The ECU 18 has a pressure application check division 77 which begins to check the pressure application at a predetermining timing.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: August 6, 2002
    Assignee: Aisen Seiki Kabushiki Kaisha
    Inventors: Wataru Tanaka, Toshiaki Hamada, Hirofumi Nitta
  • Patent number: 6402267
    Abstract: A vehicle braking control apparatus carries out a pressure apply check to determine if the automatic pressure apply is calculated normally when the vehicle is started. The apparatus includes a fluid pressure generator that generates a master cylinder pressure in response to a pedal depression force, a fluid supplying device that supplies a braking fluid pressure to the wheel cylinders from the master cylinder, and a pressure apply device that introduces the fluid pressure to the pressure chamber of the fluid pressure generator. A controller controls the braking force of each wheel by driving the fluid pressure supplying device and controls pressurization of the master cylinder pressure by automatically controlling the pressure apply device. A pressure apply check device starts a pressure apply check to determine that the automatic pressure apply is calculated normally when the master cylinder pressure is increased up to a fixed value within a fixed time after the pressure apply check is started.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: June 11, 2002
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Wataru Tanaka, Toshiaki Hamada, Hirofumi Nitta
  • Publication number: 20020027386
    Abstract: A vehicular parking brake apparatus includes right and left-side brakes connected to an electric motor via a cable and an equalizer, so that the operating forces of the brakes become equal. In this case, the operating forces of the right and left brakes are commonly controlled based on one of the wheels that exhibits a greater rate of slip. Therefore, it is possible to avoid a rate of slip of the right and left wheels from becoming excessively great. The electric motor is controlled taking into account a transfer delay of the cable. Therefore, the slip rates of the right and left wheels can be quickly converged to a proper state. Thus, in a case where a parking brake is operated during the running of the vehicle, the operating force of the parking brake is controlled so that the state of slip of the wheels is a proper state.
    Type: Application
    Filed: August 13, 2001
    Publication date: March 7, 2002
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Akihiro Yanaka, Shoichi Shono, Toshiaki Hamada, Yoshikazu Tachiiri
  • Publication number: 20020027388
    Abstract: A vehicle brake control device includes a brake member, a wheel brake cylinder mounted on a wheel, and a master cylinder. The master cylinder generates a master cylinder hydraulic pressure in response to an operating force applied to the brake member. The brake control device also includes an automatic pressure increasing control device, a braking force control device, a coefficient of friction detecting device that detects a coefficient of friction of the road, and an automatic pressure increasing restraining device. The automatic pressure increasing control device controls automatic pressure increasing operation of the master cylinder based on the operating force applied to the brake member. The braking force control device controls the increased master cylinder hydraulic pressure supplied to the wheel brake cylinder.
    Type: Application
    Filed: August 27, 2001
    Publication date: March 7, 2002
    Inventors: Wataru Tanaka, Toshiaki Hamada, Hirofumi Nitta
  • Publication number: 20020023818
    Abstract: A vehicle parking brake system having an AUTO selector for selectively establishing an automatic mode and a manual mode, parking brake units, and an electronic control unit operable in the automatic mode to automatically activate the parking brake units to apply a parking brake to vehicle rear left and right wheels (RW1, RW2) when the vehicle is in a parked state, and to automatically de-activate the parking brake units to remove the parking brake from the vehicle wheel, and in the manual mode to selectively apply and remove the parking brake to and from the vehicle wheels according to operations of a MANUAL MODE control switch.
    Type: Application
    Filed: August 13, 2001
    Publication date: February 28, 2002
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Akihiro Yanaka, Shoichi Shono, Toshiaki Hamada
  • Patent number: 6334655
    Abstract: A braking control apparatus for vehicles which is capable of generating a braking force in response to a pedal depression force to non-controlled wheels while continuing vehicle stability control. The apparatus generates a brake fluid pressure including a pedal input pressure in response to the pedal depression force and a servo pressure in response to a fluid pressure introduced from a pressure apply unit. A fluid pressure control apparatus supplies brake fluid pressure, an electric control unit controls the braking force of each wheel by driving, and a pedal input pressure estimate portion estimates the pedal input pressure. The electric control unit controls the braking force of the non-controlled wheels during vehicle stability control based on the pedal input pressure estimated by the pedal input pressure estimate portion of the electric control unit.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: January 1, 2002
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Wataru Tanaka, Toshiaki Hamada, Hirofumi Nitta
  • Publication number: 20010054842
    Abstract: A vehicle braking control apparatus carries out a pressure apply check to determine if the automatic pressure apply is calculated normally when the vehicle is started. The apparatus includes a fluid pressure generator that generates a master cylinder pressure in response to a pedal depression force, a fluid supplying device that supplies a braking fluid pressure to the wheel cylinders from the master cylinder, and a pressure apply device that introduces the fluid pressure to the pressure chamber of the fluid pressure generator. A controller controls the braking force of each wheel by driving the fluid pressure supplying device and controls pressurization of the master cylinder pressure by automatically controlling the pressure apply device. A pressure apply check device starts a pressure apply check to determine that the automatic pressure apply is calculated normally when the master cylinder pressure is increased up to a fixed value within a fixed time after the pressure apply check is started.
    Type: Application
    Filed: March 12, 2001
    Publication date: December 27, 2001
    Inventors: Wataru Tanaka, Toshiaki Hamada, Hirofumi Nitta
  • Publication number: 20010034574
    Abstract: The present invention provides a vehicular brake control device which makes it possible to detect a failure or malfunction in closing an electromagnetic valve which is placed between a master cylinder and each of wheel cylinders. The vehicular brake control device includes a pressure application device which is capable of applying a hydraulic pressure automatically, i.e., regardless of a brake pedal depression, to each of wheel cylinders by way of a hydraulic pressure control device 17 from a master cylinder 20 and an ECU 18 which drives the pressure application unit 12 and the hydraulic pressure control device 17 to adjust a braking force of each of wheels. The hydraulic pressure control device 17 includes a set of pressure-maintaining and pressure-reducing valves for each wheel. The ECU 18 has a pressure application check division 77 which begins to check the pressure application at a predetermining timing.
    Type: Application
    Filed: March 22, 2001
    Publication date: October 25, 2001
    Inventors: Wataru Tanaka, Toshiaki Hamada, Hirofumi Nitta
  • Publication number: 20010030463
    Abstract: A braking control apparatus for vehicles which is capable of generating a braking force in response to a pedal depression force to non-controlled wheels while continuing vehicle stability control. The apparatus generates a brake fluid pressure including a pedal input pressure in response to the pedal depression force and a servo pressure in response to a fluid pressure introduced from a pressure apply unit. A fluid pressure control apparatus supplies brake fluid pressure, an electric control unit controls the braking force of each wheel by driving, and a pedal input pressure estimate portion estimates the pedal input pressure. The electric control unit controls the braking force of the non-controlled wheels during vehicle stability control based on the pedal input pressure estimated by the pedal input pressure estimate portion of the electric control unit.
    Type: Application
    Filed: March 12, 2001
    Publication date: October 18, 2001
    Inventors: Wataru Tanaka, Toshiaki Hamada, Hirofumi Nitta
  • Patent number: 6247762
    Abstract: The present invention is directed to a vehicle braking system having a stroke simulator and a servo device, which includes a pressure generator for generating a hydraulic braking pressure, a wheel brake cylinder operatively mounted on each wheel of the vehicle, a pressure control valve device which is disposed in a passage for communicating the pressure generator with the wheel brake cylinder, to control the hydraulic braking pressure supplied to the wheel brake cylinder, and an electronic controller for controlling at least in response to an amount of operation of the brake pedal. A master cylinder is provided for communicating with the wheel brake cylinder and supplying the hydraulic braking pressure into it in response to operation of the brake pedal, when at least one of the pressure generator, the pressure control valve device and the electronic controller is abnormal.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: June 19, 2001
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Akihito Kusano, Masahiro Inden, Toshiaki Hamada, Hiroshi Toda