Patents Assigned to Takeuchi Mfg. Co., Ltd.
  • Patent number: 10280949
    Abstract: A travel control device is provided with hydraulic pumps of a variable capacity type that are driven by an engine; hydraulic motors that are driven by discharged oil from the hydraulic pumps; traveling devices that are rotation-driven by the hydraulic motors; a travel operation lever that is operated so as to instruct a traveling operation; a first control valve for generating a charged hydraulic pressure by adjusting the discharged oil from a charge pump and a second control valve for generating a capacity control hydraulic pressure in accordance with the operation of the travel operation lever. The first control valve is designed to pressure-adjust and generate a charged hydraulic pressure in accordance with the rotation speed of the engine, and the hydraulic pump is subjected to a variable capacity control process by a capacity control hydraulic pressure that is pressure-adjusted and generated by the second control valve.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: May 7, 2019
    Assignee: Takeuchi Mfg. Co., Ltd.
    Inventors: Hiroki Kondo, Shumpei Okutani, Takeshi Kakuryu, Takato Takizawa, Tomonori Sato
  • Patent number: 9815332
    Abstract: A working vehicle according to the present invention is configured with a fuel tank, a fuel sensor for detecting an amount of fuel stored in the fuel tank, and an informing device (a controller, informing switch, and speaker) for informing the stored amount of fuel detected by the fuel sensor, by changing the informing pattern in response to this stored amount of fuel. The working vehicle is also configured with an exhaust gas purification system for purifying exhaust gas using urea water, a urea water tank, a urea water sensor for detecting the amount of urea water stored in the urea water tank, and an informing device (the controller, informing switch, and speaker) for informing a stored amount of urea water detected by the urea water sensor, by changing the informing pattern in response to this stored amount of urea water.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: November 14, 2017
    Assignee: TAKEUCHI MFG. CO., LTD.
    Inventors: Yuuki Jinno, Shumpei Okutani
  • Publication number: 20170241448
    Abstract: A travel control device is provided with hydraulic pumps of a variable capacity type that are driven by an engine; hydraulic motors that are driven by discharged oil from the hydraulic pumps; traveling devices that are rotation-driven by the hydraulic motors; a travel operation lever that is operated so as to instruct a traveling operation; a first control valve for generating a charged hydraulic pressure by adjusting the discharged oil from a charge pump and a second control valve for generating a capacity control hydraulic pressure in accordance with the operation of the travel operation lever. The first control valve is designed to pressure-adjust and generate a charged hydraulic pressure in accordance with the rotation speed of the engine, and the hydraulic pump is subjected to a variable capacity control process by a capacity control hydraulic pressure that is pressure-adjusted and generated by the second control valve.
    Type: Application
    Filed: February 7, 2017
    Publication date: August 24, 2017
    Applicant: Takeuchi Mfg. Co., Ltd.
    Inventors: Hiroki KONDO, Shumpei OKUTANI, Takeshi KAKURYU, Takato TAKIZAWA, Tomonori SATO
  • Patent number: 9695570
    Abstract: In a state in which an arm 21 is oscillated to a lowest position, each control link 22 is arranged to be horizontally extended backward where the control link 22 is pivotally connected to a point A, and is pivotally connected to the arm 21 at a point D. An arm cylinder 23 is arranged to be vertically extended upward where the arm cylinder 23 is pivotally connected to a point B, and is pivotally connected to the arm 21 at a point E. The lift link 24 is arranged to be vertically extended upward where the lift link 24 is pivotally connected to a point C, and is pivotally connected to the arm 21 at a point F. The points E and F are located above the point D.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: July 4, 2017
    Assignee: TAKEUCHI MFG. CO., LTD.
    Inventor: Shusaku Ito
  • Publication number: 20170050562
    Abstract: A working vehicle according to the present invention is configured with a fuel tank, a fuel sensor for detecting an amount of fuel stored in the fuel tank, and an informing device (a controller, informing switch, and speaker) for informing the stored amount of fuel detected by the fuel sensor, by changing the informing pattern in response to this stored amount of fuel. The working vehicle is also configured with an exhaust gas purification system for purifying exhaust gas using urea water, a urea water tank, a urea water sensor for detecting the amount of urea water stored in the urea water tank, and an informing device (the controller, informing switch, and speaker) for informing a stored amount of urea water detected by the urea water sensor, by changing the informing pattern in response to this stored amount of urea water.
    Type: Application
    Filed: October 9, 2015
    Publication date: February 23, 2017
    Applicant: TAKEUCHI MFG. CO., LTD.
    Inventors: Yuuki JINNO, Shumpei OKUTANI
  • Publication number: 20160024748
    Abstract: In a state in which an arm 21 is oscillated to a lowest position, each control link 22 is arranged to be horizontally extended backward where the control link 22 is pivotally connected to a point A, and is pivotally connected to the arm 21 at a point D. An arm cylinder 23 is arranged to be vertically extended upward where the arm cylinder 23 is pivotally connected to a point B, and is pivotally connected to the arm 21 at a point E. The lift link 24 is arranged to be vertically extended upward where the lift link 24 is pivotally connected to a point C, and is pivotally connected to the arm 21 at a point F. The points E and F are located above the point D.
    Type: Application
    Filed: June 29, 2015
    Publication date: January 28, 2016
    Applicant: TAKEUCHI MFG. CO., LTD.
    Inventor: Shusaku ITO
  • Patent number: 8100210
    Abstract: An electrically driven industrial vehicle comprising a revolving body (11) attached to a undercarriage (7) so as to be able to turn horizontally; a power shovel device (20) for receiving a hydraulic drive force and operating, the power shovel device being mounted on the revolving body (11); and a hydraulic drive force generating unit provided to the revolving body (11), for generating hydraulic drive force for operating the power shovel device (20). The hydraulic drive force generating unit has a hydraulic fluid tank (73) for storing hydraulic fluid; a hydraulic pump (14) for feeding the hydraulic fluid in the hydraulic fluid tank to the power shovel device (20); an electric motor (13) for driving the hydraulic pump; and a lithium ion battery (50) for feeding electrical drive power to the electric motor.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: January 24, 2012
    Assignee: Takeuchi Mfg. Co., Ltd
    Inventors: Akio Takeuchi, Yoshihide Shimada, Masao Yoshioka, Yutaka Yamazaki, Akira Yamamoto
  • Patent number: 8030860
    Abstract: A power shovel vehicle including a hydraulic pump that outputs hydraulic oil for operating a hydraulic actuator, an electric motor for driving the hydraulic pump, a main battery for supplying direct current electric power, an inverter for converting the direct current electric power into alternating current electric power and operating the electric motor, a second relay for making and breaking the connection between the main battery and the inverter, an operating device for operating the hydraulic actuator, a controller for controlling operation of the hydraulic actuator and inverter, and turning on and off the second relay, a first relay for making and breaking the connection between the main battery and the controller, a power source monitoring controller for monitoring conditions of the main battery and turning on and off the first relay, a hydraulic sensor for detecting the discharge pressure of the hydraulic pump, and an electric current sensor for measuring a load current flowing into the inverter.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: October 4, 2011
    Assignee: Takeuchi Mfg Co., Ltd.
    Inventor: Masao Yoshioka
  • Patent number: 7973499
    Abstract: A crawler type power shovel vehicle (1) operated by a hydraulic actuator (20), constructed from an electric motor (31) for driving a hydraulic pump (32) for supplying hydraulic oil to the hydraulic actuator (20), a battery (50) for supplying direct current power, an inverter (41) for operating the electric motor (31) by converting the direct current power into alternating current power and supplying it to the motor, a controller (40) for causing the inverter (41) to control operation of the electric motor (31), and a voltage/current sensor (42) for detecting the magnitude of a load current flowing from the battery (50) into the inverter (41). The controller (40) stops the motor (31) when the magnitude of the load current detected by the voltage/current sensor (42) continuously exceeds a predetermined threshold for a predetermined time period.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: July 5, 2011
    Assignee: Takeuchi Mfg. Co., Ltd.
    Inventor: Masao Yoshioka
  • Patent number: 7900722
    Abstract: A shovel loader (1) has a vehicle body frame (9), a travel device (5), a loader device (20), and a drive power generation section for generating drive power for making the travel device (5) travel. The vehicle body frame (9) has a pair of side frames (9a, 9a) arranged on both the left and right sides of the shovel loader (1). The loader device (20) is made up of a pair of lift arms (21,21) vertically swingably attached to the pair of side frames (9a, 9a) and of a bucket (29) vertically swingably attached to the forward end of the pair of lift arms (21,21). The drive power generation section has a pair of electric motors (71,71) for individually transmitting drive power to the pair of travel devices (5,5) and capable of being controlled independent of each other so that a vehicle (10) can be made to travel in a manner the left and right are independent of each other, and also has a battery (50) for supplying electric power to the electric motors (71,71).
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: March 8, 2011
    Assignee: Takeuchi Mfg. Co., Ltd.
    Inventors: Yoshihide Shimada, Masao Yoshioka, Yutaka Yamazaki
  • Publication number: 20100224426
    Abstract: A shovel loader (1) has a vehicle body frame (9), a travel device (5), a loader device (20), and a drive power generation section for generating drive power for making the travel device (5) travel. The vehicle body frame (9) has a pair of side frames (9a, 9a) arranged on both the left and right sides of the shovel loader (1). The loader device (20) is made up of a pair of lift arms (21,21) vertically swingably attached to the pair of side frames (9a, 9a) and of a bucket (29) vertically swingably attached to the forward end of the pair of lift arms (21,21). The drive power generation section has a pair of electric motors (71,71) for individually transmitting drive power to the pair of travel devices (5,5) and capable of being controlled independent of each other so that a vehicle (10) can be made to travel in a mariner the left and right are independent of each other, and also has a battery (50) for supplying electric power to the electric motors (71,71).
    Type: Application
    Filed: March 9, 2007
    Publication date: September 9, 2010
    Applicant: TAKEUCHI MFG. CO., LTD.
    Inventors: Yoshihide Shimada, Masao Yoshioka, Yutaka Yamazaki
  • Publication number: 20090314557
    Abstract: An electrically driven industrial vehicle comprising a revolving body (11) attached to a undercarriage (7) so as to be able to turn horizontally; a power shovel device (20) for receiving a hydraulic drive force and operating, the power shovel device being mounted on the revolving body (11); and a hydraulic drive force generating unit provided to the revolving body (11), for generating hydraulic drive force for operating the power shovel device (20). The hydraulic drive force generating unit has a hydraulic fluid tank (73) for storing hydraulic fluid; a hydraulic pump (14) for feeding the hydraulic fluid in the hydraulic fluid tank to the power shovel device (20); an electric motor (13) for driving the hydraulic pump; and a lithium ion battery (50) for feeding electrical drive power to the electric motor.
    Type: Application
    Filed: February 2, 2007
    Publication date: December 24, 2009
    Applicant: TAKEUCHI MFG. CO., LTD.
    Inventors: Akio Takeuchi, Yoshihide Shimada, Masao Yoshioka, Yutaka Yamazaki, Akira Yamamoto
  • Publication number: 20090261761
    Abstract: A crawler type power shovel vehicle (1) operated by a hydraulic actuator (20), constructed from an electric motor (31) for driving a hydraulic pump (32) for supplying hydraulic oil to the hydraulic actuator (20), a battery (50) for supplying direct current power, an inverter (41) for operating the electric motor (31) by converting the direct current power into alternating current power and supplying it to the motor, a controller (40) for causing the inverter (41) to control operation of the electric motor (31), and a voltage/current sensor (42) for detecting the magnitude of a load current flowing from the battery (50) into the inverter (41). The controller (40) stops the motor (31) when the magnitude of the load current detected by the voltage/current sensor (42) continuously exceeds a predetermined threshold for a predetermined time period.
    Type: Application
    Filed: May 24, 2007
    Publication date: October 22, 2009
    Applicant: TAKEUCHI MFG. CO., LTD.
    Inventor: Masao Yoshioka
  • Publication number: 20090173554
    Abstract: A crawler type power shovel vehicle (1) driven by a hydraulic actuator (20).
    Type: Application
    Filed: May 24, 2007
    Publication date: July 9, 2009
    Applicant: TAKEUCHI MFG. CO., LTD.
    Inventor: Masao Yoshioka
  • Patent number: 7360823
    Abstract: An operator cab 53, which is mounted rotatable on the vehicle body 51 of a hydraulic mini-shovel 50, comprises a cab box 1, a door 2, upper and lower link members 3 and 4, and a slide rail 5. The cab box 1 has an internal cab room 1a and an entrance 15, which leads into the cab room 1a. The door 2 closes and opens the entrance 15 when it is moved forward and rearward, respectively. The upper and lower link members 3 and 4 have fixed ends 3a and 4a, each of which is connected pivotally to the cab box 1, and moving ends 3b and 4b, each of which is connected pivotally to the front end of the door 2. The slide member 6 is connected pivotally to the rear end of the door 2 and slides along a slide rail 5, which is provided externally on the cab box 1.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: April 22, 2008
    Assignees: Takeuchi Mfg. Co., Ltd., Kyowa Sangyo Co., Ltd.
    Inventors: Shinichi Nakayama, Mitsuhisa Shinsen
  • Patent number: 7360824
    Abstract: An operator cab 53, which is mounted rotatable on the vehicle body 51 of a hydraulic mini-shovel 50, comprises a cab box 1, a door 2, upper and lower link members 3 and 4, a slide member 6, a closed door stopper 12 and an opened door stopper 11. The cab box 1 has an internal cab room 1a and an entrance 15, which leads into the cab room 1a. The door 2 closes and opens the entrance 15 when it is moved forward and rearward, respectively. The upper and lower link members 3 and 4 have fixed ends 3a and 4a, each of which is connected pivotally to the cab box 1, and moving ends 3b and 4b, each of which is connected pivotally to the front end of the door 2. The slide member 6 comprises a bumper 6a, which is provided at the rear end of the door 2, and a rocker 6b, which is connected pivotally to the bumper 6a so as to swing freely and slides along a slide rail 5, which is provided externally on the cab box 1.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: April 22, 2008
    Assignees: Takeuchi Mfg. Co., Ltd., Kyowa Sangyo Co., Ltd.
    Inventors: Shinichi Nakayama, Mitsuhisa Shinsen
  • Patent number: 7216483
    Abstract: A generating set formed so that a generator 70 connected to a rotary shaft 32 turning and supporting a conveyor 30 by utilizing the power by which a gas supplied by a supply means 60 into a bucket 50 positioned on a lower portion of the side of the conveyor 30 which is turned upward in the interior of a tower 10 is moved up with the bucket 50 in a liquid 20 stored in the interior of the tower 10 as the gas receives the buoyancy of the liquid. In this generating set, the supply means 60 is formed so as to turn compressed air into a plurality of bubbles of a very small diameter, send out these bubbles into the liquid 20 in the interior of the tower, and hold down to a low level the resistance occurring when the compressed air is sent out into the liquid 20 in the interior of the tower. An electric power energy value obtained from the generator 70 is increased with respect to a value of the energy consumed by the supply means 60.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: May 15, 2007
    Assignee: Takeuchi Mfg. Co., Ltd.
    Inventor: Akio Takeuchi
  • Patent number: 7213398
    Abstract: A conveyor (30) having a plurality of buckets (60) lined up in and fixed to an inner side of a frame (10) is supported so that the conveyor can be circulated in the shape of a loop and substantially horizontally in a substantially vertical plane via rotary shafts (20). The frame (10) is supported so that the frame can be slidingly moved in the vertical direction around guide rods (50) stood up on a river bottom. Gas-containing floats (40) are fixed to the frame (10) to float the frame on the surface of the river flowing water. The river flowing water is made to flow into the buckets (60) lined up on the outer surface of the lower circulating portion (32) of the conveyor, and the conveyor (30) is thereby circulated. A generator (70) connected to one of the rotary shafts (20) supporting the conveyor (30) is thereby rotated.
    Type: Grant
    Filed: January 16, 2004
    Date of Patent: May 8, 2007
    Assignee: Takeuchi Mfg. Co., Ltd.
    Inventor: Akio Takeuchi
  • Patent number: D609252
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: February 2, 2010
    Assignee: Takeuchi Mfg. Co., Ltd.
    Inventors: Yoshihide Shimada, Toshihiko Takeuchi
  • Patent number: D633926
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: March 8, 2011
    Assignee: Takeuchi Mfg., Co., Ltd.
    Inventors: Yoshihide Shimada, Toshihiko Takeuchi