Patents by Inventor Tadashi Arimura

Tadashi Arimura 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: 9750936
    Abstract: A control device of an electrostimulator is used in the electrostimulator including an electrode, an angular velocity sensor, and a notifier. The control device includes a controller that controls electrostimulation which is output from the electrode and that counts the number of times of movements as the number of times of the reciprocating movements of the target site; and a storage that stores preset information. The storage stores a first threshold value and a second threshold value. The controller causes the notifier to display movement information including the number of times of the movements, based on a state in which an angular velocity reaches the second threshold value after reaching the first threshold value.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: September 5, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Sachiko Atsumi, Tadashi Arimura, Hiroyuki Kaizo
  • Patent number: 9737706
    Abstract: A control device of an electrostimulator is used in the electrostimulator including an electrode and an angular velocity sensor. The control device includes a controller that controls electrostimulation which is output from the electrode and a storage that stores a first threshold value and a second threshold value. The first threshold value is greater than the second threshold value. The controller causes the electrode to output electrostimulation based on a state in which angular velocity reaches one threshold value of the first threshold value and the second threshold value, and then, reaches the other threshold value.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: August 22, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Sachiko Atsumi, Tadashi Arimura, Hiroyuki Kaizo
  • Patent number: 9701000
    Abstract: An impact rotation tool including a drive source, an impact force generation unit that generates an impact force for converting power from the drive source to pulsed torque, a shaft that transmits the pulsed torque to a bit used to perform a tightening task, a torque measurement unit that measures torque applied to the shaft as measured torque, a rotation angle measurement unit that measures a rotation angle of the shaft, a tightening torque calculation unit that calculates an angular acceleration from the rotation angle to calculate a tightening torque based on the angular acceleration and the measured torque, and a controller that controls the drive source based on the tightening torque.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: July 11, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Fumiaki Sekino, Kenichirou Inagaki, Toshiharu Ohashi, Tadashi Arimura, Ryuji Otani, Mitsumasa Mizuno
  • Patent number: 9687972
    Abstract: An impact rotation tool includes a drive source that generates power. An impact force generation unit generates impact force by changing the power generated by the drive source to pulsed torque. A shaft transmits the pulsed torque to the distal tool with the generated impact force. A torque detector generates a signal corresponding to the torque applied to the shaft. A determination unit determines whether or not a torque value obtained from a signal corresponding to the torque has reached a predetermined torque value. A control unit controls the drive source to a predetermined driving state when the determination unit determines that the torque value has reached the predetermined torque value. The determination unit is arranged on the shaft.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: June 27, 2017
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Fumiaki Sekino, Toshiharu Ohashi, Tadashi Arimura, Kenichirou Inagaki
  • Patent number: 9579776
    Abstract: An electric power tool includes a voltage step-up condition setting operation unit that serves as a human machine interface and a voltage converter capable of performing a voltage step-up operation to raise a voltage supplied from a power supply and supply a raised voltage to a motor. The voltage converter is further capable of changing a voltage step-up level in the voltage step-up operation in accordance with the operation of the voltage step-up condition setting operation unit. A driving state detection unit generates a driving state signal corresponding to a driving state of the electric power tool. A control unit controls a stop timing of the motor in accordance with the driving state signal.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: February 28, 2017
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tadashi Arimura, Toshiharu Ohashi, Hiroyuki Kaizo, Fumiaki Sekino, Kenichirou Inagaki
  • Publication number: 20160346538
    Abstract: A control device of an electrostimulator is used in the electrostimulator including an electrode and an angular velocity sensor. The control device includes a controller that controls electrostimulation which is output from the electrode and a storage that stores a first threshold value and a second threshold value. The first threshold value is greater than the second threshold value. The controller causes the electrode to output electrostimulation based on a state in which angular velocity reaches one threshold value of the first threshold value and the second threshold value, and then, reaches the other threshold value.
    Type: Application
    Filed: April 20, 2016
    Publication date: December 1, 2016
    Inventors: SACHIKO ATSUMI, TADASHI ARIMURA, HIROYUKI KAIZO
  • Publication number: 20160346539
    Abstract: A control device of an electrostimulator is used in the electrostimulator including an electrode, an angular velocity sensor, and a notifier. The control device includes a controller that controls electrostimulation which is output from the electrode and that counts the number of times of movements as the number of times of the reciprocating movements of the target site; and a storage that stores preset information. The storage stores a first threshold value and a second threshold value. The controller causes the notifier to display movement information including the number of times of the movements, based on a state in which an angular velocity reaches the second threshold value after reaching the first threshold value.
    Type: Application
    Filed: May 9, 2016
    Publication date: December 1, 2016
    Inventors: SACHIKO ATSUMI, TADASHI ARIMURA, HIROYUKI KAIZO
  • Patent number: 9472969
    Abstract: An adapter includes a converter unit which increases at least one of voltage and current outputted from a battery pack and supply the increased the voltage and/or the current to a load, and a characteristic detection unit which detects at least one of the voltage outputted from the battery pack, the current outputted from the battery pack, a temperature of the battery pack, a voltage inputted to the load, a current inputted to the load and a temperature of the converter unit. The adapter further includes a control unit configured to control the converter unit to increase each of said at least one of the voltage and the current outputted from the battery pack to a corresponding reference value and perform a control operation of suppressing such increase to prevent an occurrence of over-current or over-discharge based on at least one detection result.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: October 18, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hiroyuki Kaizo, Tadashi Arimura, Toshiharu Ohashi
  • Patent number: 9270211
    Abstract: An electric power tool includes a power supply, a motor capable of being driven in a forward rotation mode or a reverse rotation mode, and a voltage step-up unit capable of performing a voltage step-up operation to raise a voltage supplied from the power supply and supply a raised voltage to the motor. The voltage step-up unit is configured to change the voltage step-up operation in accordance with whether a rotation mode of the motor is the forward rotation mode or the reverse rotation mode.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: February 23, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hiroyuki Kaizo, Tadashi Arimura, Toshiharu Ohashi
  • Patent number: 9089956
    Abstract: An impact power tool includes an impact mechanism for applying a striking impact to an output shaft by using an output power of a motor. A strike detection unit detects the striking impact applied by the impact mechanism to obtain a striking timing and a striking speed detection unit calculates a striking speed from the striking timing obtained by the strike detection unit and a rotation angle of the motor obtained by a rotation angle detection unit. A control unit counts the number of striking impact detected by the strike detection unit and stops the motor if the number of striking impact reaches a predetermined strike number. The control unit is designed to correct the predetermined strike number when the striking speed obtained in the striking speed detection unit is equal to or lower than a specified striking speed.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: July 28, 2015
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Tadashi Arimura, Mitsumasa Mizuno, Toshiharu Ohashi, Masaaki Sakaue
  • Patent number: 9088239
    Abstract: A voltage increasing control circuit is connected to a power supply to regulate power supplied to a load. The voltage increasing control circuit includes a voltage increasing unit configured to increase voltage that is supplied from the power supply, and supply the voltage to the load. A power estimation unit determines whether or not to increase the power supplied to the load. A voltage control unit controls the voltage increasing unit. When the power estimation unit determines to increase the power supplied to the load, the voltage control unit controls the voltage increasing unit to increase the power supplied to the load.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: July 21, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hiroyuki Kaizo, Toshiharu Ohashi, Tadashi Arimura
  • Publication number: 20150021062
    Abstract: An impact rotation tool including a drive source, an impact force generation unit that generates an impact force for converting power from the drive source to pulsed torque, a shaft that transmits the pulsed torque to a bit used to perform a tightening task, a torque measurement unit that measures torque applied to the shaft as measured torque, a rotation angle measurement unit that measures a rotation angle of the shaft, a tightening torque calculation unit that calculates an angular acceleration from the rotation angle to calculate a tightening torque based on the angular acceleration and the measured torque, and a controller that controls the drive source based on the tightening torque.
    Type: Application
    Filed: July 16, 2014
    Publication date: January 22, 2015
    Inventors: Fumiaki SEKINO, Kenichirou INAGAKI, Toshiharu OHASHI, Tadashi ARIMURA, Ryuji OTANI, Mitsumasa MIZUNO
  • Publication number: 20140262390
    Abstract: An electric power tool includes a voltage step-up condition setting operation unit that serves as a human machine interface and a voltage converter capable of performing a voltage step-up operation to raise a voltage supplied from a power supply and supply a raised voltage to a motor. The voltage converter is further capable of changing a voltage step-up level in the voltage step-up operation in accordance with the operation of the voltage step-up condition setting operation unit. A driving state detection unit generates a driving state signal corresponding to a driving state of the electric power tool. A control unit controls a stop timing of the motor in accordance with the driving state signal.
    Type: Application
    Filed: March 10, 2014
    Publication date: September 18, 2014
    Applicant: Panasonic Corporation
    Inventors: Tadashi ARIMURA, Toshiharu OHASHI, Hiroyuki KAIZO, Fumiaki SEKINO, Kenichirou INAGAKI
  • Publication number: 20140265948
    Abstract: An electric power tool includes a power supply, a motor capable of being driven in a forward rotation mode or a reverse rotation mode, and a voltage step-up unit capable of performing a voltage step-up operation to raise a voltage supplied from the power supply and supply a raised voltage to the motor. The voltage step-up unit is configured to change the voltage step-up operation in accordance with whether a rotation mode of the motor is the forward rotation mode or the reverse rotation mode.
    Type: Application
    Filed: March 7, 2014
    Publication date: September 18, 2014
    Applicant: Panasonic Corporation
    Inventors: Hiroyuki KAIZO, Tadashi ARIMURA, Toshiharu OHASHI
  • Patent number: 8746364
    Abstract: An electric power tool includes a motor; a speed reducer for transferring a rotational power of the motor at a reduced speed; and a reduction ratio changing unit for changing a reduction ratio of the speed reducer. The speed reduction mechanism includes an axially slidable changeover member and a gear member, the changeover member being engaged with or disengaged from the gear member depending on an axial slide position thereof. The reduction ratio changing unit includes a shift actuator for axially sliding the changeover member, a driving state detector for detecting a driving state of the motor, a slide position detector for detecting a slide position of the changeover member and a controller for driving the shift actuator and for changing a drive control of the shift actuator depending on detection results of the slide position detector unit and the driving state detector unit, respectively.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: June 10, 2014
    Assignee: Panasonic Corporation
    Inventors: Masatoshi Atsumi, Kenichiro Inagaki, Tadashi Arimura, Hiroyuki Kaizo, Yutaka Yamada
  • Patent number: 8708861
    Abstract: An electric power tool includes a motor; a speed reducer for transferring a rotational power of the motor at a reduced speed; and a reduction ratio changing unit for changing a reduction ratio of the speed reducer. The speed reduction mechanism includes an axially slidable changeover member and a gear member, the changeover member being engaged with or disengaged from the gear member depending on an axial slide position thereof. The reduction ratio changing unit includes a shift actuator for axially sliding the changeover member, a driving state detector for detecting a driving state of the motor, a slide position detector for detecting a slide position of the changeover member and a controller for driving the shift actuator and for temporarily decreasing or increasing a rotational power of the motor depending on detection results of the driving state detector and the slide position detector, respectively.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: April 29, 2014
    Assignee: Panasonic Corporation
    Inventors: Kenichirou Inagaki, Yutaka Yamada, Tadashi Arimura, Masatoshi Atsumi, Hiroyuki Kaizo
  • Publication number: 20140102741
    Abstract: An impact rotation tool includes a drive source that generates power. An impact force generation unit generates impact force by changing the power generated by the drive source to pulsed torque. A shaft transmits the pulsed torque to the distal tool with the generated impact force. A torque detector generates a signal corresponding to the torque applied to the shaft. A determination unit determines whether or not a torque value obtained from a signal corresponding to the torque has reached a predetermined torque value. A control unit controls the drive source to a predetermined driving state when the determination unit determines that the torque value has reached the predetermined torque value. The determination unit is arranged on the shaft.
    Type: Application
    Filed: October 8, 2013
    Publication date: April 17, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Fumiaki SEKINO, Toshiharu OHASHI, Tadashi ARIMURA, Kenichirou INAGAKI
  • Patent number: 8672807
    Abstract: A speed-changing device includes a motor, a reduction gear train that reduces a rotation speed of the motor in accordance with a speed reduction ratio and transmits the rotation at the reduced speed, and a speed reduction ratio switching unit that switches the speed reduction ratio. The speed reduction ratio switching unit includes an actuator that switches the speed reduction ratio, a controller that controls the actuator, and a drive state detector that detects an index value representing load torque applied to the motor. The controller activates the actuator when the index value exceeds a first threshold value and activates the actuator when the index value fluctuates between the first threshold and a second threshold thereby forming an undulated pattern that satisfies a predetermined condition.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: March 18, 2014
    Assignee: Panasonic Corporation
    Inventors: Masatoshi Atsumi, Kenichirou Inagaki, Hiroyuki Kaizo, Tadashi Arimura, Yutaka Yamada
  • Publication number: 20140045653
    Abstract: A speed-changing device includes a motor, a reduction gear train that reduces a rotation speed of the motor in accordance with a speed reduction ratio and transmits the rotation at the reduced speed, and a speed reduction ratio switching unit that switches the speed reduction ratio. The speed reduction ratio switching unit includes an actuator that switches the speed reduction ratio, a controller that controls the actuator, and a drive state detector that detects an index value representing load torque applied to the motor. The controller activates the actuator when the index value exceeds a first threshold value and activates the actuator when the index value fluctuates between the first threshold and a second threshold thereby forming an undulated pattern that satisfies a predetermined condition.
    Type: Application
    Filed: November 15, 2012
    Publication date: February 13, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Masatoshi ATSUMI, Kenichirou INAGAKI, Hiroyuki KAIZO, Tadashi ARIMURA, Yutaka YAMADA
  • Publication number: 20140042981
    Abstract: An adapter includes a converter unit which increases at least one of voltage and current outputted from a battery pack and supply the increased the voltage and/or the current to a load, and a characteristic detection unit which detects at least one of the voltage outputted from the battery pack, the current outputted from the battery pack, a temperature of the battery pack, a voltage inputted to the load, a current inputted to the load and a temperature of the converter unit. The adapter further includes a control unit configured to control the converter unit to increase each of said at least one of the voltage and the current outputted from the battery pack to a corresponding reference value and perform a control operation of suppressing such increase to prevent an occurrence of over-current or over-discharge based on at least one detection result.
    Type: Application
    Filed: August 8, 2013
    Publication date: February 13, 2014
    Applicant: Panasonic Corporation
    Inventors: Hiroyuki KAIZO, Tadashi ARIMURA, Toshiharu OHASHI