Patents by Inventor Tomokazu Goto

Tomokazu Goto 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: 11926510
    Abstract: This crane is provided with: a operable functional unit; an actuator; a generation unit that generates a first control signal including a first deceleration signal section composed of a control signal for decelerating a speed of the operable functional unit from a first speed to a second speed and a first constant-speed signal section composed of a control signal for maintaining the speed of the operable functional unit at the second speed; a filter unit for filtering the first control signal to generate a second control signal; and a control unit that controls the actuator so as to decelerate the operable functional unit based on the second control signal, then controls the actuator so as to maintain the speed at the second speed, and controls the actuator so as to zero the speed when a load has been moved to a location satisfying a prescribed condition.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: March 12, 2024
    Assignee: TADANO LTD.
    Inventors: Tomokazu Goto, Shinsuke Kanda, Kazuma Mizuki
  • Patent number: 11542126
    Abstract: This crane is provided with: a boom; a wire rope suspended down from a leading end section of the boom; a suspender that is fixed to a lower end of the wire rope and is for suspending a slinging tool for hanging a load; a calculation unit that calculates a first load, which is the weight of a member that is suspended down from the suspender; a slinging tool database unit that stores information pertaining to the slinging tool corresponding to the first load; a determination unit that determines whether a load is being suspended from the suspender; and a control unit that acquires the information pertaining to the slinging tool corresponding to the first load from the slinging tool database unit if the load is being suspended, and sets the vertical length of the slinging tool on the basis of the acquired information pertaining to the slinging tool.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: January 3, 2023
    Assignee: TADANO LTD.
    Inventors: Tomokazu Goto, Shinsuke Kanda, Kazuma Mizuki
  • Patent number: 11434111
    Abstract: A crane calculates the resonance frequency of the fluctuation of a suspended load determined from the hanging length of a main wire rope or a sub wire rope, generates a control signal for actuators, in accordance with the operation of a turning operation tool, a hoisting operation tool and the like, and generates a filtering control signal for the actuators in which a frequency component in any frequency range has been attenuated from the control signal at any ratio in reference to the resonance frequency. When the actuators are controlled by the operation of the respective operation tool and when the actuators are controlled regardless of the operation of the respective operation tool, the frequency range to be attenuated and the attenuation ratio are switched to different settings.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: September 6, 2022
    Assignee: TADANO LTD.
    Inventors: Shinsuke Kanda, Kazuma Mizuki, Tatsuya Yanagisawa, Tomokazu Goto
  • Patent number: 11267681
    Abstract: This crane is provided with: a operable functional unit; an operation unit for receiving an operation input for operating the operable functional unit; an actuator that drives the operable functional unit; a first generation unit that generates a first control signal for the actuator on the basis of the operation input; a switch unit that can be switched between a first state and a second state; a first filter unit that filters the first control signal to generate a second control signal when the switch unit is in the second state; and a control unit that controls the actuator on the basis of the first control signal when the switch unit is in the first state, and controls the actuator on the basis of the second control signal when the switch unit is in the second state.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: March 8, 2022
    Assignee: TADANO LTD.
    Inventors: Tomokazu Goto, Shinsuke Kanda, Kazuma Mizuki
  • Publication number: 20210053800
    Abstract: This crane is provided with: a operable functional unit; an operation unit for receiving an operation input for operating the operable functional unit; an actuator that drives the operable functional unit; a first generation unit that generates a first control signal for the actuator on the basis of the operation input; a switch unit that can be switched between a first state and a second state; a first filter unit that filters the first control signal to generate a second control signal when the switch unit is in the second state; and a control unit that controls the actuator on the basis of the first control signal when the switch unit is in the first state, and controls the actuator on the basis of the second control signal when the switch unit is in the second state.
    Type: Application
    Filed: February 28, 2019
    Publication date: February 25, 2021
    Applicant: TADANO LTD.
    Inventors: Tomokazu GOTO, Shinsuke KANDA, Kazuma MIZUKI
  • Publication number: 20210047152
    Abstract: This crane is provided with: a operable functional unit; an actuator; a generation unit that generates a first control signal including a first deceleration signal section composed of a control signal for decelerating a speed of the operable functional unit from a first speed to a second speed and a first constant-speed signal section composed of a control signal for maintaining the speed of the operable functional unit at the second speed; a filter unit for filtering the first control signal to generate a second control signal; and a control unit that controls the actuator so as to decelerate the operable functional unit based on the second control signal, then controls the actuator so as to maintain the speed at the second speed, and controls the actuator so as to zero the speed when a load has been moved to a location satisfying a prescribed condition.
    Type: Application
    Filed: February 28, 2019
    Publication date: February 18, 2021
    Applicant: TADANO LTD.
    Inventors: Tomokazu GOTO, Shinsuke KANDA, Kazuma MIZUKI
  • Publication number: 20210047151
    Abstract: This crane is provided with: a boom; a wire rope suspended down from a leading end section of the boom; a suspender that is fixed to a lower end of the wire rope and is for suspending a slinging tool for hanging a load; a calculation unit that calculates a first load, which is the weight of a member that is suspended down from the suspender; a slinging tool database unit that stores information pertaining to the slinging tool corresponding to the first load; a determination unit that determines whether a load is being suspended from the suspender; and a control unit that acquires the information pertaining to the slinging tool corresponding to the first load from the slinging tool database unit if the load is being suspended, and sets the vertical length of the slinging tool on the basis of the acquired information pertaining to the slinging tool.
    Type: Application
    Filed: February 25, 2019
    Publication date: February 18, 2021
    Applicant: TADANO LTD.
    Inventors: Tomokazu GOTO, Shinsuke KANDA, Kazuma MIZUKI
  • Publication number: 20200031633
    Abstract: A crane calculates the resonance frequency of the fluctuation of a suspended load determined from the hanging length of a main wire rope or a sub wire rope, generates a control signal for actuators, in accordance with the operation of a turning operation tool, a hoisting operation tool and the like, and generates a filtering control signal for the actuators in which a frequency component in any frequency range has been attenuated from the control signal at any ratio in reference to the resonance frequency. When the actuators are controlled by the operation of the respective operation tool and when the actuators are controlled regardless of the operation of the respective operation tool, the frequency range to be attenuated and the attenuation ratio are switched to different settings.
    Type: Application
    Filed: June 13, 2018
    Publication date: January 30, 2020
    Applicant: TADANO LTD.
    Inventors: Shinsuke KANDA, Kazuma MIZUKI, Tatsuya YANAGISAWA, Tomokazu GOTO
  • Patent number: 6989401
    Abstract: The present invention relates to a novel sulfonic acid derivative of hydroxamic acid or a pharmacologically acceptable salt thereof. More particularly, the present invention relates to a sulfonic acid derivative of hydroxamic acid or a pharmacologically acceptable salt thereof, which is useful as an inhibitor of lipopolysaccharides (LPS). In addition, the present invention relates to a novel intermediate compound useful for the synthesis of this sulfonic acid derivative of hydroxamic acid.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: January 24, 2006
    Assignee: Mitsubishi Pharma Corporation
    Inventors: Kazuhiro Maeda, Shuji Sonda, Tadahiro Takemoto, Tomokazu Goto, Fujio Kobayashi, Masahiko Kajii, Naruyasu Komorita, Fumihiro Hirayama
  • Publication number: 20030176486
    Abstract: The present invention relates to a novel sulfonic acid derivative of hydroxamic acid or a pharmacologically acceptable salt thereof. More particularly, the present invention relates to a sulfonic acid derivative of hydroxamic acid or a pharmacologically acceptable salt thereof, which is useful as an inhibitor of lipopolysaccharides (LPS). In addition, the present invention relates to a novel intermediate compound useful for the synthesis of this sulfonic acid derivative of hydroxamic acid.
    Type: Application
    Filed: February 14, 2003
    Publication date: September 18, 2003
    Inventors: Kazuhiro Maeda, Shuji Sonda, Tadahiro Takemoto, Tomokazu Goto, Fujio Kobayashi, Masahiko Kajii, Naruyasu Komorita, Fumihiro Hirayama