1251 patents
Page 28 of 63
Utility
Hydraulic system for working machine
29 Mar 22
A hydraulic system includes a first hydraulic actuator, a second hydraulic actuator, a first pump to supply operation fluid to the first hydraulic actuator, a second pump to supply operation fluid to the second hydraulic actuator, a second control valve to control operation fluid to be supplied from the second pump to the second hydraulic actuator, and a first control valve including a main control valve to control operation fluid to be supplied from the first pump to the first hydraulic actuator, and a subordinate control valve configured to control operation fluid to be supplied from the second pump to the second control valve and to the first hydraulic actuator.
Hisayuki Hiramatsu, Kazuaki Shobu
Filed: 25 Jun 18
Utility
Prime mover and working machine having the same
29 Mar 22
A prime mover includes an engine, a fan to generate a cooling airflow around the engine, an air-intake tube to supply outside air to the engine, a connection tube to supply, to the air-intake tube, a blow-by gas generated in the engine, and a wind shielding member to shield the connection tube from the cooling airflow, the wind shielding member being arranged around the connection tube.
Yuki Takano, Makoto Noguchi, Tetsuji Matsushita
Filed: 11 Apr 19
Utility
Working Machine
24 Mar 22
A working machine includes: a support bracket provided on a machine body and including a boom pivotal support portion and a cylinder pivotal support portion; a boom pivotally supported by the boom pivotal support portion; a boom cylinder pivotally supported at the cylinder pivotal support portion and the boom, and causing the boom to swing upward and downward; a hydraulic hose extended through the support bracket from the rear of the support bracket to the front of the support bracket and connected to the boom cylinder; a first clamp to retain the hydraulic hose on the support bracket; and a second clamp to retain the hydraulic hose on the boom cylinder.
Kazuaki SHOBU, Hiroshi HORII, Hitoshi IWAMURA, Shoichi KAWANO, Shohei DOI
Filed: 30 Nov 21
Utility
Vehicle Speed Control System
24 Mar 22
A vehicle speed control system that controls a vehicle speed of an agricultural vehicle that performs work using a work device while traveling using a traveling device, the agricultural vehicle performs work travel a plurality of times with non-work travel interposed therebetween, the vehicle speed control system including: a control unit configured to perform work travel control in which a vehicle speed is set according to a load on a motive power source that drives the traveling device and the work device; and a storage unit in which a vehicle speed that is set during the work travel is stored as an optimum vehicle speed, the control unit performs initial work travel control in which a vehicle speed at a time when the work travel is started after the non-work travel is set using the optimum vehicle speed that is stored during the work travel performed before the non-work travel.
Takashi Nakabayashi, Tomohiko Sano, Osamu Yoshida, Shotaro Kawahata, Masayuki Horiuchi
Filed: 23 Dec 19
Utility
Hydraulic System for Working Machine
24 Mar 22
A hydraulic system includes a hydraulic pump, a first hydraulic actuator, a second hydraulic actuator, a first control valve to control the first hydraulic actuator, a second control valve to control the second hydraulic actuator, a pressure increasing portion to increasing a pressure of the operation fluid, a first discharge fluid tube connected to any one of the first control valve and the second control valve and connected to the pressure increasing portion, a second discharge fluid tube connected to the first discharge fluid tube and configured to discharge the operation fluid, a float switching valve having an allowance position, a prevention position, and a float position, the allowance position blocking the second discharge fluid tube and allowing the operation fluid to flow to the pressure increasing portion, the prevention position unblocking the second discharge fluid tube and preventing the operation fluid from flowing to the pressure increasing portion.
Yuji FUKUDA, Keigo HONDA
Filed: 1 Dec 21
Utility
Working Machine
24 Mar 22
A working machine includes a machine body, an engine on the machine body, a motor/generator to perform an assisting action in which the motor/generator functions as a motor to assist the engine in driving and an electricity generating action in which the motor/generator functions as a generator to generate electricity using power from the engine, a battery to store electricity generated by the motor/generator, an operation actuator to perform an operation of the machine body, a starting action determiner to determine, upon operation of the operation actuator, whether the operation corresponds to a starting action for the machine body, a first setter to set, if the starting action determiner determines that the operation of the operation actuator corresponds to the starting action, a torque of the motor/generator for the assisting action or the electricity generating action to a first torque, and a second setter to set, if the starting action determiner determines that the operation of the operation actuator does not correspond to the starting action, the torque for the assisting action or the electricity generating action to a second torque differing from the first torque set by the first setter.
Daiki TAMBA, Yukifumi YAMANAKA
Filed: 6 Dec 21
Utility
Working Machine
24 Mar 22
A working machine includes a machine body, an engine on the machine body, a motor/generator to perform an assisting action in which the motor/generator functions as a motor to assist the engine in driving and an electricity generating action in which the motor/generator functions as a generator to generate electricity using power from the engine, a working device to function using power from the engine and the motor/generator, a work operation actuator for operation of the working device, an action controller to cause the assisting action to be performed when a rotation speed of the engine is equal to or less than a first rotation speed and cause the electricity generating action to be performed when the rotation speed of the engine is equal to or greater than a second rotation speed greater than the first rotation speed, and a speed controller to change the first rotation speed or the second rotation speed according to an operation amount of the work operation actuator.
Daiki TAMBA, Yukifumi YAMANAKA
Filed: 7 Dec 21
Utility
Power system for a work vehicle
22 Mar 22
A working machine includes: a first generator having: a rotor to be rotated by power from a PTO shaft; a rotor coil provided to the rotor; and a stator coil to generate electricity when magnetizing current is applied to the rotor coil; a working device to be operated by the electricity generated by the first generator; and a converter device to convert surplus electricity not consumed by the working device into the magnetizing current to be applied to the rotor coil.
Masaru Kawane, Sumio Yagyu, Takao Nakagawa, Yukifumi Yamanaka, Go Takaki
Filed: 30 Jun 20
Utility
Hydraulic system in work machine
22 Mar 22
A hydraulic system in a work machine includes a hydraulic pump to supply pilot hydraulic oil.
Yuji Fukuda
Filed: 17 Apr 20
Utility
Ventilator-equipped engine
22 Mar 22
The ventilator-equipped engine is configured to: guide a blow-by gas generated in a crankcase to an intake passage through an inside of a cylinder head, an inside of a head cover, and a pressure regulating valve; and to directly introduce fresh air into an internal space of the cylinder head by providing a fresh air introduction passage that extends across the intake passage and the cylinder head.
Hiroaki Isoshima, Takeshi Kawasaki, Yuichiro Yamada
Filed: 11 Dec 20
Utility
Heat insulating material
22 Mar 22
A heat insulating material includes a central portion to cover a first base or a second base of an exhaust gas purifier of an engine, and a first rectangular portion and a second rectangular portion which have substantially rectangular shapes and which are connected to the central portion substantially symmetrically with respect to a center of the central portion.
Taketo Kimura, Hayato Kawano
Filed: 23 Mar 21
Utility
Satellite radio wave sensitivity distribution management system and method for work vehicle
22 Mar 22
A satellite radio wave sensitivity distribution management system for a work vehicle that travels automatically in a work site by satellite navigation technology includes a satellite positioning module that outputs satellite position data and reception sensitivity based on satellite information from a satellite, a sensitivity reduction event detection section that detects occurrence of a sensitivity reduction event, a sensitivity reduction event information generation section that generates sensitivity reduction event information including an occurrence location of the sensitivity reduction event, an occurrence time of the sensitivity reduction event, and satellite identification data, a sensitivity reduction event information storage section, a reception obstacle determination section that determines a reception obstacle as the cause of the sensitivity reduction event, and a sensitivity reduction management section that manages a sensitivity reduction area and a sensitivity reduction time zone.
Naohiro Ishikawa, Akisato Hori, Akira Chabata, Yasushi Watabe
Filed: 20 Dec 17
Utility
Coupling Device
17 Mar 22
A coupling device includes: a first connector that connects to a work vehicle; a second connector that connects to a work device; an actuator that changes a connecting position of at least one of the first connector and the second connector; and a control device that controls the actuator.
Kohei Okura, Shinnosuke Ishikawa, Noriyuki Koshida
Filed: 1 Sep 21
Utility
Work Machine
17 Mar 22
A work machine includes: a work vehicle; a work device coupled to the work vehicle; a control device that executes at least one of: a first control to control the work device based on a first command from the work vehicle; and a second control to control the work vehicle based on a second command from the work device; and a switching device that switches the control device between the first control and the second control.
Kohei Okura, Shinnosuke Ishikawa, Noriyuki Koshida
Filed: 3 Sep 21
Utility
Agriculture Assistance System
17 Mar 22
An agriculture assistance system includes a data setting unit configured or programmed to associate agricultural data at a predetermined position in an agricultural field to a plurality of areas set in the agricultural field, and to set the associated agricultural data as data corresponding to the respective areas, an area setting unit configured or programmed to set the areas in the agricultural field, and a map display unit configured or programmed to display the data corresponding to the respective areas.
Shuji TAKEDA, Yoshiharu YOSHIMOTO, Masayuki YAO, Tomohiro NISHIKAWA, Kazuya HIRAZAWA
Filed: 22 Nov 21
Utility
Working Machine
17 Mar 22
In a working machine, a stroke of an arm cylinder caused when a distance of a tip portion of an arm from a machine body is equal to a predetermined limit distance is defined as a stroke Y1, a stroke of a boom cylinder caused when the stroke of the arm cylinder is equal to the stroke Y1 and a height of the tip portion of the arm is equal to a height of a boom pivot shaft is defined as a stroke X1, and when the stroke of the boom cylinder is between X1 and a stroke end thereof in a direction to swing the boom upward, the controller restricts the stroke of the arm cylinder to swing the arm in a dumping direction to prevent the arm from swinging further in the dumping direction from a position where the stroke of the arm cylinder is equal to Y1.
Hiroshi Horii
Filed: 26 Nov 21
Utility
Electric Work Vehicle
17 Mar 22
An electric work vehicle includes: a carrier 32 in which a battery can be stored and a support portion 40 is provided; a carrier storage portion provided in a vehicle body and capable of holding the carrier 32; a guide portion 21, 22 that is capable of supporting, via the support portion 40, the carrier 32 operated so as to be lifted from the ground, in a state in which the carrier is lifted from the ground, and guiding the carrier 32 toward the carrier storage portion; and a positioning portion 42 configured to, when the carrier 32 placed on the ground is operated so as to be lifted and the support portion 40 has reached a position at which the support portion 40 can be supported by the guide portion 21, 22, stop the operation of lifting the carrier 32.
Masahiro Yamada, Hirokazu Ito, Makoto Odagiri
Filed: 4 Jun 21
Utility
Working machine
15 Mar 22
A working machine includes a machine body having a front and a rear opposite to the front in a front-rear direction and an engine mounted in the machine body.
Keigo Honda, Hiroaki Nakagawa, Daisuke Sakurai, Hiroshi Fujiwara
Filed: 25 May 20
Utility
Electric work vehicle
15 Mar 22
An electric work vehicle includes a vehicle body having traveling wheels, a traveling motor capable of driving the traveling wheels, and a battery unit having, at one end portion thereof, a pair of left and right leg wheels, the battery unit being detachably attachable to a battery storage section of the vehicle body and being capable of supplying electric power to the traveling motor.
Kazuaki Matsuda, Hirokazu Ito, Masahiro Yamada, Tomohiko Hisakuni
Filed: 29 Oct 19
Utility
Work management system and work management method
15 Mar 22
A work management system includes a generator attached to a structure body that is provided to a transmission case of a working machine, configured to be driven by power transmitted from a PTO shaft, and configured to transmit power to a working device provided in the working machine, an information obtaining portion configured to obtain operation information representing operation of the working device that is activated by the power from the generator, a work management portion configured to manage working of the working device based on the operation information obtained by the information obtaining portion, and a controller portion configured to control the working device based on the operation information obtained by the information obtaining portion.
Sumio Yagyu, Takao Nakagawa, Masaru Kawane, Piet Jan Van Der Marel
Filed: 27 Dec 19