Patents by Inventor Koichiro Tsukane
Koichiro Tsukane 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).
-
Publication number: 20230203790Abstract: A shovel includes a lower traveling body, an upper turning body turnably mounted on the lower traveling body, and a controller configured to control a projection device that projects light onto a ground surface. The controller is attached to the upper turning body, and is configured to control the projection device so as to enable visualization of the relationship between the current shape of the ground surface and the shape of a target surface.Type: ApplicationFiled: February 28, 2023Publication date: June 29, 2023Inventors: Yusuke SANO, Chunnan WU, Yoshiyasu ITSUJI, Koichiro TSUKANE, Takumi ITOH, Keiji HONDA
-
Patent number: 11655611Abstract: A shovel that corrects the movement of an attachment regardless of the operating state of the attachment by an operator is provided. The shovel includes a traveling body, a turning body turnably mounted on the traveling body, an attachment attached to the turning body, a hydraulic actuator configured to drive the attachment, and a controller. The controller is configured to control the hydraulic actuator to minimize a change in orientation of the traveling body or of the turning body, in response to a change in moment caused by an aerial movement of the attachment.Type: GrantFiled: December 17, 2019Date of Patent: May 23, 2023Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.Inventors: Yusuke Sano, Junichi Okada, Kazunori Hiranuma, Yoshiyasu Itsuji, Koichiro Tsukane, Keiji Honda
-
Patent number: 11613873Abstract: A shovel includes a lower traveling body, an upper turning body turnably mounted on the lower traveling body, and a controller configured to control a projection device that projects light onto a ground surface. The controller is attached to the upper turning body, and is configured to control the projection device so as to enable visualization of the relationship between the current shape of the ground surface and the shape of a target surface.Type: GrantFiled: September 6, 2019Date of Patent: March 28, 2023Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.Inventors: Yusuke Sano, Chunnan Wu, Yoshiyasu Itsuji, Koichiro Tsukane, Takumi Itoh, Keiji Honda
-
Publication number: 20200115882Abstract: A shovel that corrects the movement of an attachment regardless of the operating state of the attachment by an operator is provided. The shovel includes a traveling body, a turning body turnably mounted on the traveling body, an attachment attached to the turning body, a hydraulic actuator configured to drive the attachment, and a controller. The controller is configured to control the hydraulic actuator to minimize a change in orientation of the traveling body or of the turning body, in response to a change in moment caused by an aerial movement of the attachment.Type: ApplicationFiled: December 17, 2019Publication date: April 16, 2020Inventors: Yusuke SANO, Junichi OKADA, Kazunori HIRANUMA, Yoshiyasu ITSUJI, Koichiro TSUKANE, Keiji HONDA
-
Patent number: 10604916Abstract: A shovel may has a first pump that discharges a first hydraulic oil, a second pump that discharges a second hydraulic oil, a pump/motor that discharges a third hydraulic oil, an arm cylinder that at least the first hydraulic oil can flow into, and a boom cylinder that at least the second hydraulic oil can flow into. When the arm cylinder and the boom cylinder operate simultaneously, the arm cylinder is actuated by the first hydraulic oil or the third hydraulic oil, and the boom cylinder is actuated by the second hydraulic oil.Type: GrantFiled: September 8, 2016Date of Patent: March 31, 2020Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.Inventors: Eisuke Matsuzaki, Hiroshi Ishiyama, Koichiro Tsukane, Kazushi Ishida
-
Publication number: 20200018045Abstract: A shovel includes a lower traveling body, an upper turning body turnably mounted on the lower traveling body, and a controller configured to control a projection device that projects light onto a ground surface. The controller is attached to the upper turning body, and is configured to control the projection device so as to enable visualization of the relationship between the current shape of the ground surface and the shape of a target surface.Type: ApplicationFiled: September 6, 2019Publication date: January 16, 2020Inventors: Yusuke SANO, Chunnan WU, Yoshiyasu ITSUJI, Koichiro TSUKANE, Takumi ITOH, Keiji HONDA
-
Patent number: 10337538Abstract: A shovel includes a first pump 14L; a second pump 14R; a hydraulic swing motor 21; a pump/motor 14A configured to generate an engine-assist torque in response to hydraulic oil from the hydraulic swing motor 21 during swing deceleration; an accumulator 80 configured to accumulate the hydraulic oil flowing out of the hydraulic swing motor 21 during swing deceleration; a regeneration valve 22G configured to switch open/close of transfer from a discharge port 21L to the pump/motor 14A and the accumulator 80; and a controller configured to control the regeneration valve 22G. During swing deceleration, the controller adjusts an open area of the regeneration valve 22G in such a way that a swing flowing-out pressure becomes a swing braking target pressure, and causes the hydraulic oil flowing out of the hydraulic swing motor 21 to flow into the pump/motor 14A and the accumulator 80 at the same pressure.Type: GrantFiled: April 5, 2017Date of Patent: July 2, 2019Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.Inventors: Eisuke Matsuzaki, Hiroshi Ishiyama, Koichiro Tsukane
-
Publication number: 20170204887Abstract: A shovel includes a first pump 14L; a second pump 14R; a hydraulic swing motor 21; a pump/motor 14A configured to generate an engine-assist torque in response to hydraulic oil from the hydraulic swing motor 21 during swing deceleration; an accumulator 80 configured to accumulate the hydraulic oil flowing out of the hydraulic swing motor 21 during swing deceleration; a regeneration valve 22G configured to switch open/close of transfer from a discharge port 21L to the pump/motor 14A and the accumulator 80; and a controller configured to control the regeneration valve 22G. During swing deceleration, the controller adjusts an open area of the regeneration valve 22G in such a way that a swing flowing-out pressure becomes a swing braking target pressure, and causes the hydraulic oil flowing out of the hydraulic swing motor 21 to flow into the pump/motor 14A and the accumulator 80 at the same pressure.Type: ApplicationFiled: April 5, 2017Publication date: July 20, 2017Inventors: Eisuke MATSUZAKI, Hiroshi ISHIYAMA, Koichiro TSUKANE
-
Publication number: 20160376770Abstract: A shovel may has a first pump that discharges a first hydraulic oil, a second pump that discharges a second hydraulic oil, a pump/motor that discharges a third hydraulic oil, an arm cylinder that at least the first hydraulic oil can flow into, and a boom cylinder that at least the second hydraulic oil can flow into. When the arm cylinder and the boom cylinder operate simultaneously, the arm cylinder is actuated by the first hydraulic oil or the third hydraulic oil, and the boom cylinder is actuated by the second hydraulic oil.Type: ApplicationFiled: September 8, 2016Publication date: December 29, 2016Inventors: Eisuke MATSUZAKI, Hiroshi ISHIYAMA, Koichiro TSUKANE, Kazushi ISHIDA
-
Patent number: 8939699Abstract: In a construction machine, a boom assist cylinder (7A) assists an operation of a boom (4) by a hydraulic pressure, and an arm assist cylinder (8A) assists an operation of an arm (5) by a hydraulic pressure. An accumulator (16) accumulates operation oil to be supplied to the boom assist cylinder and the arm assist cylinder in a pressurized state. A first hydraulic pipe (14) connects between the boom assist cylinder and the arm assist cylinder. A second hydraulic pipe (12) connects between the arm assist cylinder and the accumulator. The second hydraulic pipe is connected to a hydraulic connection port of the arm assist cylinder so that the operation oil is supplied in a direction of closing the arm from the accumulator to the arm assist cylinder.Type: GrantFiled: April 19, 2011Date of Patent: January 27, 2015Assignee: Sumitomo Heavy Industries, Ltd.Inventor: Koichiro Tsukane
-
Publication number: 20140366717Abstract: A fluid pressure increasing/decreasing machine can continuously supply an output pressure to a destination of supply by converting an input pressure from a source of supply. A control device selects at least one input pressure chamber and at least one output pressure chamber from among at least three pressure chambers in a fluid pressure cylinder or a plurality of fluid pressure cylinders operating inter-connectedly, the input pressure chamber being supplied with the input pressure, the output pressure chamber creating the output pressure including a pressure higher than the input pressure and a pressure lower than the input pressure. A flow control valve causes the selected input pressure chamber to communicate with the source of supply, and the selected output pressure chamber to communicate with the destination of supply. At least one of the pressure chambers is capable of being either of the input pressure chamber and the output pressure chamber.Type: ApplicationFiled: September 5, 2014Publication date: December 18, 2014Inventor: Koichiro TSUKANE
-
Publication number: 20140338316Abstract: A regeneration circuit includes an oil collection passage that collects return oil from a hydraulic motor to which pressure oil discharged from a hydraulic pump is supplied, a regeneration system that recovers energy from the collected return oil, and an oil resupply passage that resupplies pressure oil from the regeneration system to the hydraulic motor. The regeneration system includes a pressure oil inflow part that converts pressure energy of the collected return oil into mechanical energy, a pressure oil outflow part that outputs low pressure oil with a pressure lower than a pressure of the collected return oil to the oil resupply passage when the pressure energy of the collected return oil is converted into the mechanical energy, and a regeneration part that accumulates the mechanical energy.Type: ApplicationFiled: March 10, 2014Publication date: November 20, 2014Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.Inventor: Koichiro TSUKANE
-
Publication number: 20130034419Abstract: In a construction machine, a boom assist cylinder (7A) assists an operation of a boom (4) by a hydraulic pressure, and an arm assist cylinder (8A) assists an operation of an arm (5) by a hydraulic pressure. An accumulator (16) accumulates operation oil to be supplied to the boom assist cylinder and the arm assist cylinder in a pressurized state. A first hydraulic pipe (14) connects between the boom assist cylinder and the arm assist cylinder. A second hydraulic pipe (12) connects between the arm assist cylinder and the accumulator. The second hydraulic pipe is connected to a hydraulic connection port of the arm assist cylinder so that the operation oil is supplied in a direction of closing the arm from the accumulator to the arm assist cylinder.Type: ApplicationFiled: April 19, 2011Publication date: February 7, 2013Inventor: Koichiro Tsukane