Patents by Inventor Toshihiko Kushida
Toshihiko Kushida 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).
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Patent number: 9776453Abstract: A tightening device and a tightening method are able to check that a fastening member has been fastened to a desired set torque or greater after being tightened, without loosening the fastening member.Type: GrantFiled: October 31, 2014Date of Patent: October 3, 2017Assignees: FUJI JUKOGYO KABUSHIKI KAISHA, TONE CO., LTD.Inventors: Katsuhiro Fujimoto, Toshihiko Kushida, Tatsuo Hirai, Yukio Torigai, Tatsuo Nakahata, Manabu Saito, Masao Watanabe
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Patent number: 9645026Abstract: A tightening device is able to check that a fastening member has been fastened to a desired set torque or greater after being tightened, without loosening the fastening member.Type: GrantFiled: October 24, 2014Date of Patent: May 9, 2017Assignees: TONE CO., LTD., FUJI JUKOGYO KABUSHIKI KAISHAInventors: Katsuhiro Fujimoto, Toshihiko Kushida, Tatsuo Hirai, Yukio Torigai, Tatsuo Nakahata, Manabu Saito, Masao Watanabe
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Publication number: 20150122522Abstract: A tightening device and a tightening method are able to check that a fastening member has been fastened to a desired set torque or greater after being tightened, without loosening the fastening member.Type: ApplicationFiled: October 31, 2014Publication date: May 7, 2015Applicants: FUJI JUKOGYO KABUSHIKI KAISHA, TONE CO., LTD.Inventors: KATSUHIRO FUJIMOTO, TOSHIHIKO KUSHIDA, TATSUO HIRAI, YUKIO TORIGAI, TATSUO NAKAHATA, MANABU SAITO, MASAO WATANABE
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Publication number: 20150114138Abstract: A tightening device is able to check that a fastening member has been fastened to a desired set torque or greater after being tightened, without loosening the fastening member.Type: ApplicationFiled: October 24, 2014Publication date: April 30, 2015Applicants: TONE CO., LTD., FUJI JUKOGYO KABUSHIKI KAISHAInventors: KATSUHIRO FUJIMOTO, TOSHIHIKO KUSHIDA, TATSUO HIRAI, YUKIO TORIGAI, TATSUO NAKAHATA, MANABU SAITO, MASAO WATANABE
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Patent number: 8264374Abstract: There is provided a wireless data transmitting and receiving system that wirelessly transmits a signal regarding a torque acting on a rotary shaft and/or a rotation angle of the rotary shaft from a data transmitting unit disposed in the rotary shaft to a data receiving unit.Type: GrantFiled: April 14, 2010Date of Patent: September 11, 2012Assignee: Maeda Metal Industries, Ltd.Inventors: Takayoshi Obatake, Yasunobu Kaneyama, Toshihiko Kushida, Tatsuo Hirai
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Patent number: 8200287Abstract: An antenna switching method of a wireless communication system capable of efficiently transmitting various signals from a plurality of transmitting antennas to a receiving unit is provided. The method includes a received signal intensity measuring step of operating an antenna switch (23) and obtaining received signal intensities of all the transmitting antennas (24, 25), a step of comparing the obtained received signal intensities of all the transmitting antennas and determining a transmitting antenna wherein the received signal intensity is the highest, a step of operating the antenna switch so that the transmitting antenna wherein the received signal intensity is the highest is connected to a transmitting circuit 22 and fixing the transmitting antenna, and a step of transmitting signals thereafter from the transmitting circuit via the fixed transmitting antenna.Type: GrantFiled: October 26, 2010Date of Patent: June 12, 2012Assignee: Maeda Metal Industries, Ltd.Inventors: Toshihiko Kushida, Takayoshi Obatake
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Patent number: 7992455Abstract: A tightening torque measuring unit capable of reducing errors with respect to either a clockwise or counterclockwise direction as soon as possible is provided. A tightening torque measuring unit 10, installed in a tightening device, includes a torque sensor 12 that detects a tightening torque and an amplifier that amplifies an output from the torque sensor 12. The amplifier 40 or 42 applies a different gain to the output from the torque sensor depending on whether the tightening direction of the tightening apparatus is clockwise or counterclockwise.Type: GrantFiled: June 8, 2009Date of Patent: August 9, 2011Assignee: Maeda Metal Industries, Ltd.Inventors: Toshihiko Kushida, Tatsuo Hirai
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Publication number: 20110105038Abstract: An antenna switching method of a wireless communication system capable of efficiently transmitting various signals from a plurality of transmitting antennas to a receiving unit is provided. The method includes a received signal intensity measuring step of operating an antenna switch (23) and obtaining received signal intensities of all the transmitting antennas (24, 25), a step of comparing the obtained received signal intensities of all the transmitting antennas and determining a transmitting antenna wherein the received signal intensity is the highest, a step of operating the antenna switch so that the transmitting antenna wherein the received signal intensity is the highest is connected to a transmitting circuit 22 and fixing the transmitting antenna, and a step of transmitting signals thereafter from the transmitting circuit via the fixed transmitting antenna.Type: ApplicationFiled: October 26, 2010Publication date: May 5, 2011Inventors: Toshihiko Kushida, Takayoshi Obatake
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Publication number: 20100265097Abstract: There is provided a wireless data transmitting and receiving system that wirelessly transmits a signal regarding a torque acting on a rotary shaft and/or a rotation angle of the rotary shaft from a data transmitting unit disposed in the rotary shaft to a data receiving unit.Type: ApplicationFiled: April 14, 2010Publication date: October 21, 2010Inventors: TAKAYOSHI OBATAKE, Yasunobu Kaneyama, Toshihiko Kushida, Tatsuo Hirai
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Publication number: 20090308178Abstract: A tightening torque measuring unit capable of reducing errors with respect to either a clockwise or counterclockwise direction as soon as possible is provided. A tightening torque measuring unit 10, installed in a tightening device, includes a torque sensor 12 that detects a tightening torque and an amplifier that amplifies an output from the torque sensor 12. The amplifier 40 or 42 applies a different gain to the output from the torque sensor depending on whether the tightening direction of the tightening apparatus is clockwise or counterclockwise.Type: ApplicationFiled: June 8, 2009Publication date: December 17, 2009Inventors: Toshihiko Kushida, Tatsuo Hirai
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Patent number: 7595601Abstract: An abrupt fall in a current value immediately after an abrupt rise at the time when an starting switch is turned ON is detected, when the current value rises due to starting of nut fastening and then the current value abruptly falls, it is determined that an inward flange of a washer is sheared, and when the current value reaches a value corresponding to a primary fastening torque, the motor is stopped.Type: GrantFiled: April 11, 2007Date of Patent: September 29, 2009Assignee: Maeda Metal Industries, Ltd.Inventor: Toshihiko Kushida
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Publication number: 20080251268Abstract: An abrupt fall in a current value immediately after an abrupt rise at the time when an starting switch is turned ON is detected, when the current value rises due to starting of nut fastening and then the current value abruptly falls, it is determined that an inward flange of a washer is sheared, and when the current value reaches a value corresponding to a primary fastening torque, the motor is stopped.Type: ApplicationFiled: April 11, 2007Publication date: October 16, 2008Inventor: TOSHIHIKO KUSHIDA
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Patent number: 7135791Abstract: A controller compares a minimum value of power source voltage which decreases in association with starting current generated upon start of a motor with a threshold value in a storing unit. When the minimum value is less than the threshold value, the controller notifies of shortage of the power source terminal voltage, and stops the motor. The controller also compares a value obtained by integrating the power source voltage which decreases in association with starting current generated upon start of the motor for only predetermined time with the threshold value in the storing unit, when the integral value is less than the threshold value, notifies of shortage of the power source terminal voltage, and stops the motor.Type: GrantFiled: November 23, 2005Date of Patent: November 14, 2006Assignee: Maeda Metal industries, Ltd.Inventors: Toshihiko Kushida, Yukio Torigai
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Publication number: 20060113934Abstract: A controller compares a minimum value of power source voltage which decreases in association with starting current generated upon start of a motor with a threshold value in a storing unit. When the minimum value is less than the threshold value, the controller notifies of shortage of the power source terminal voltage, and stops the motor. The controller also compares a value obtained by integrating the power source voltage which decreases in association with starting current generated upon start of the motor for only predetermined time with the threshold value in the storing unit, when the integral value is less than the threshold value, notifies of shortage of the power source terminal voltage, and stops the motor.Type: ApplicationFiled: November 23, 2005Publication date: June 1, 2006Applicant: Maeda Metal Industries, Ltd.Inventors: Toshihiko Kushida, Yukio Torigai
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Patent number: 7011000Abstract: A bolt or nut tightening device comprising a tightening socket (4) and a reaction force receiving member (5), the tightening socket (4) being rotatingly drivable upon a speed reduction by a motor (2) and a reduction mechanism (3) which are incorporated in the device, the motor (2) being coupled to a controller (7), the controller (7) being operable to deenergize the motor (2) in response to a tightening completion signal of detecting means (70) for detecting the completion of tightening of a bolt or nut and to reversely rotate the motor (2) only for a moment upon lapse of a predetermined period of time taken for inertial rotation of the motor (2) to reduce to an extent neglectable for the reverse rotation of the motor (2) after the deenergization, whereby the propping action of the reaction force receiving member (5) is nullified.Type: GrantFiled: June 20, 2005Date of Patent: March 14, 2006Assignee: Maeda Metal Industries, Ltd.Inventors: Toshihiko Kushida, Yukio Torigai
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Publication number: 20050279198Abstract: A bolt or nut tightening device comprising a tightening socket (4) and a reaction force receiving member (5), the tightening socket (4) being rotatingly drivable upon a speed reduction by a motor (2) and a reduction mechanism (3) which are incorporated in the device, the motor (2) being coupled to a controller (7), the controller (7) being operable to deenergize the motor (2) in response to a tightening completion signal of detecting means (70) for detecting the completion of tightening of a bolt or nut and to reversely rotate the motor (2) only for a moment upon lapse of a predetermined period of time taken for inertial rotation of the motor (2) to reduce to an extent neglectable for the reverse rotation of the motor (2) after the deenergization, whereby the propping action of the reaction force receiving member (5) is nullified.Type: ApplicationFiled: June 20, 2005Publication date: December 22, 2005Applicant: MAEDA METAL INDUSTRIES, LTD.Inventors: Toshihiko Kushida, Yukio Torigai
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Patent number: D569207Type: GrantFiled: May 26, 2006Date of Patent: May 20, 2008Assignee: Maeda Metal Industries, Ltd.Inventors: Yukio Torigai, Toshihiko Kushida, Katsuhiro Fujimoto