Patents by Inventor Kenichi Muramoto

Kenichi Muramoto 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: 11673447
    Abstract: An operator seat is arranged in a cab. An air-conditioning unit is arranged in front of the operator seat. A lower window through which the outside can be seen from the inside of the cab is arranged in front of the operator seat and laterally to the air-conditioning unit.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: June 13, 2023
    Assignee: KOMATSU LTD.
    Inventors: Hirofumi Wada, Masato Kitashou, Yuuki Shimasaki, Kazunari Shinagawa, Takushi Izawa, Kenichi Muramoto, Junichirou Imai, Izumi Nakade, Hidenori Tatsuta, Masahiko Hamaguchi
  • Publication number: 20210354766
    Abstract: An operator seat is arranged in a cab. An air-conditioning unit is arranged in front of the operator seat. A lower window through which the outside can be seen from the inside of the cab is arranged in front of the operator seat and laterally to the air-conditioning unit.
    Type: Application
    Filed: June 4, 2018
    Publication date: November 18, 2021
    Applicant: KOMATSU LTD.
    Inventors: Hirofumi WADA, Masato KITASHOU, Yuuki SHIMASAKI, Kazunari SHINAGAWA, Takushi IZAWA, Kenichi MURAMOTO, Junichirou IMAI, Izumi NAKADE, Hidenori TATSUTA, Masahiko HAMAGUCHI
  • Patent number: 10744948
    Abstract: A climbing device body (21) can assume by a rotation operation an erect, retracted position allowing a first end portion (21A) to be positioned above and a second end portion (21B) to be positioned below and a tilted, deployed position allowing the second end portion (21B) to be positioned sideways of the vehicular body outer than the first end portion (21A). A handrail (22) is engaged with the rotation operation to be capable of assuming a raised state allowing a gripping portion (22a) to assume a first position distant from the climbing device body (21) in a deployed position and a folded state allowing the gripping portion (22a) to assume a second position close to the climbing device body (21) in a retracted position.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: August 18, 2020
    Assignee: KOMATSU LTD.
    Inventors: Masahiko Hamaguchi, Kenichi Muramoto, Yuuki Shimasaki, Masataka Setoguchi, Jun Ito
  • Patent number: 10562564
    Abstract: A work vehicle is articulated with a front frame and a rear frame linked to the front frame. The work vehicle includes a hydraulic actuator, a control valve, an operation member and a force imparting component. The hydraulic actuator is configured to be hydraulically driven to change a steering angle of the front frame with respect to the rear frame. The control valve is configured to control flow of fluid supplied to the hydraulic actuator. The operation member is linked to the control valve and configured to be operated by an operator. The force imparting component is configured to impart an assist force or a counterforce to an operation of the operation member.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: February 18, 2020
    Assignee: KOMATSU LTD.
    Inventors: Masanori Ikari, Masanobu Nakabayashi, Yuita Takenaka, Masahiko Hamaguchi, Jun Itou, Kenichi Muramoto
  • Patent number: 10392777
    Abstract: An operator's compartment is located above a climbing device and has a door. A sensing unit recognizes an operator. A door driving unit automatically opens the door in response the sensing unit sensing the operator.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: August 27, 2019
    Assignee: KOMATSU LTD.
    Inventors: Masahiko Hamaguchi, Kenichi Muramoto, Yuuki Shimasaki, Masataka Setoguchi, Jun Ito
  • Patent number: 10370821
    Abstract: A work vehicle includes a console box disposed to a side of an operator's seat, and a support including a rotational axis disposed in a left and right direction below the console box. The console box is configured to be rotatable in a forth and back direction. The support rotatably supports the console box around the rotational axis and between an operating position in which the console box is horizontally disposed and a retracted position in which the console box is inclined at a position in which the console box has been rotated rearward from the operating position. A spacing in a horizontal direction between front and rear ends of the console box disposed in the retracted position is less than a spacing in the horizontal direction between front and rear ends of the console box disposed in the operating position.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: August 6, 2019
    Assignee: KOMATSU LTD.
    Inventors: Kenichi Muramoto, Yasunari Kato, Yuuki Shimasaki, Jun Itou, Masahiko Hamaguchi
  • Publication number: 20180361938
    Abstract: A climbing device body (21) can assume by a rotation operation an erect, retracted position allowing a first end portion (21A) to be positioned above and a second end portion (21B) to be positioned below and a tilted, deployed position allowing the second end portion (21B) to be positioned sideways of the vehicular body outer than the first end portion (21A). A handrail (22) is engaged with the rotation operation to be capable of assuming a raised state allowing a gripping portion (22a) to assume a first position distant from the climbing device body (21) in a deployed position and a folded state allowing the gripping portion (22a) to assume a second position close to the climbing device body (21) in a retracted position.
    Type: Application
    Filed: August 23, 2018
    Publication date: December 20, 2018
    Applicant: KOMATSU LTD.
    Inventors: Masahiko HAMAGUCHI, Kenichi MURAMOTO, Yuuki SHIMASAKI, Masataka SETOGUCHI, Jun ITO
  • Patent number: 10099623
    Abstract: A climbing device body can assume by a rotation operation an erect, retracted position allowing a first end portion to be positioned above and a second end portion to be positioned below and a tilted, deployed position allowing the second end portion to be positioned sideways of the vehicular body outer than the first end portion. A handrail is engaged with the rotation operation to be capable of assuming a raised state allowing a gripping portion to assume a first position distant from the climbing device body in a deployed position and a folded state allowing the gripping portion to assume a second position close to the climbing device body in a retracted position.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: October 16, 2018
    Assignee: KOMATSU LTD.
    Inventors: Masahiko Hamaguchi, Kenichi Muramoto, Yuuki Shimasaki, Masataka Setoguchi, Jun Ito
  • Publication number: 20180105202
    Abstract: A work vehicle is articulated with a front frame and a rear frame linked to the front frame. The work vehicle includes a hydraulic actuator, a control valve, an operation member and a force imparting component. The hydraulic actuator is configured to be hydraulically driven to change a steering angle of the front frame with respect to the rear frame. The control valve is configured to control flow of fluid supplied to the hydraulic actuator. The operation member is linked to the control valve and configured to be operated by an operator. The force imparting component is configured to impart an assist force or a counterforce to an operation of the operation member.
    Type: Application
    Filed: October 26, 2016
    Publication date: April 19, 2018
    Inventors: Masanori IKARI, Masanobu NAKABAYASHI, Yuita TAKENAKA, Masahiko HAMAGUCHI, Jun ITOU, Kenichi MURAMOTO
  • Publication number: 20180100289
    Abstract: An operator's compartment is located above a climbing device and has a door. A sensing unit recognizes an operator. A door driving unit automatically opens the door in response the sensing unit sensing the operator.
    Type: Application
    Filed: July 22, 2016
    Publication date: April 12, 2018
    Applicant: KOMATSU LTD.
    Inventors: Masahiko HAMAGUCHI, Kenichi MURAMOTO, Yuuki SHIMASAKI, Masataka SETOGUCHI, Jun ITO
  • Publication number: 20180093614
    Abstract: A climbing device body can assume by a rotation operation an erect, retracted position allowing a first end portion to be positioned above and a second end portion to be positioned below and a tilted, deployed position allowing the second end portion to be positioned sideways of the vehicular body outer than the first end portion. A handrail is engaged with the rotation operation to be capable of assuming a raised state allowing a gripping portion to assume a first position distant from the climbing device body in a deployed position and a folded state allowing the gripping portion to assume a second position close to the climbing device body in a retracted position.
    Type: Application
    Filed: July 25, 2016
    Publication date: April 5, 2018
    Applicant: KOMATSU LTD.
    Inventors: Masahiko HAMAGUCHI, Kenichi MURAMOTO, Yuuki SHIMASAKI, Masataka SETOGUCHI, Jun ITO
  • Patent number: 9931686
    Abstract: A box-shaped protective cover that covers an upper structural portion of a body of a vibrating compactor is manufactured by executing a cutting process for fashioning a single metal plate into a shape including a first planar portion, a second planar portion, an intermediate portion, and a plurality of side flaps, a bending process for bending or curving the side flaps and the intermediate portion, and a welding process for welding a side flap of the first planar portion to a side flap of the second planar portion.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: April 3, 2018
    Assignee: MIKASA SANGYO CO., LTD.
    Inventors: Hisaharu Sunaga, Hideki Mochiki, Kenichi Nagasawa, Kenichi Muramoto, Yoshinori Miura, Yoshio Iguchi
  • Publication number: 20180058037
    Abstract: A work vehicle includes a console box disposed to a side of an operator's seat, and a support including a rotational axis disposed in a left and right direction below the console box. The console box is configured to be rotatable in a forth and back direction. The support rotatably supports the console box around the rotational axis and between an operating position in which the console box is horizontally disposed and a retracted position in which the console box is inclined at a position in which the console box has been rotated rearward from the operating position. A spacing in a horizontal direction between front and rear ends of the console box disposed in the retracted position is less than a spacing in the horizontal direction between front and rear ends of the console box disposed in the operating position.
    Type: Application
    Filed: October 30, 2015
    Publication date: March 1, 2018
    Inventors: Kenichi MURAMOTO, Yasunari KATO, Yuuki SHIMASAKI, Jun ITOU, Masahiko HAMAGUCHI
  • Publication number: 20140283645
    Abstract: The present invention provides a method of manufacturing a sufficiently strong, box-shaped protective cover for a vibrating compactor inexpensively using a small number of processes and only simple processes, and provides a protective cover for a vibrating compactor. A box-shaped protective cover that covers an upper structural portion of a body of a vibrating compactor is manufactured by executing a cutting process for fashioning a single metal plate into a shape including a first planar portion 1, a second planar portion 2, an intermediate portion 3, and a plurality of side flaps 5 (5a to 5d), a bending process for bending or curving the side flaps 5 and the intermediate portion 3, and a welding process for welding a side flap 5a (or 5b) of the first planar portion 1 to a side flap 5c (or 5d) of the second planar portion 2.
    Type: Application
    Filed: March 25, 2013
    Publication date: September 25, 2014
    Applicant: MIKASA SANGYO CO., LTD.
    Inventors: Hisaharu Sunaga, Hideki Mochiki, Kenichi Nagasawa, Kenichi Muramoto, Yoshinori Miura, Yoshio Iguchi
  • Patent number: 7337765
    Abstract: An engine stop switch and a fuel open-close lock are accommodated in a throttle lever case so that they can be easily disassembled, and the engine stop switch is turned on and off and the fuel open-close cock is opened and closed adequately by the actuation of a rotary valve in response to the turning of a lever. An engine stop switch and a fuel open-close lock are integrally incorporated in a throttle lever case, a partially toothless driven gear is intermittently rotated via a partially toothless drive gear rotated by a lever, and the intermittent rotation of the partially toothless driven gear turns on/off the engine stop switch and opens/closes the fuel open/close cock.
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: March 4, 2008
    Assignee: Mikasa Sangyo Co., Ltd.
    Inventors: Giichi Tanaka, Yoshinori Harashima, Kenichi Nagasawa, Kenichi Muramoto
  • Publication number: 20070277772
    Abstract: The present invention provides a protective cover structure for a rammer for which a guard cover plate of a power engine in a rammer is molded from a synthetic resin allowing any shape to be freely obtained and having small weight, high strength, and impact absorption ability. The cover plate is configured so that it can be assembled and disassembled by simple operations, has good endurance with respect to severe vibrations and can reduce the damage of the machine body due to the adequate impact absorption ability even when the rammer tumbles. Front end sections of guard covers disposed on both sides of a power engine are joined and fixed to the front surface section of the crank chamber, lower sections of the rear portions are supported by support frames of a protective stand provided at the lower surface of the power engine, and the rear sections of the rear portions are linked integrally by a linking transverse pole.
    Type: Application
    Filed: February 8, 2007
    Publication date: December 6, 2007
    Applicant: Mikasa Sangyo Co., Ltd.
    Inventors: Giichi Tanaka, Yoshinori Harashima, Kenichi Nagasawa, Kenichi Muramoto
  • Publication number: 20070234999
    Abstract: An engine stop switch and a fuel open-close lock are accommodated in a throttle lever case so that they can be easily disassembled, and the engine stop switch is turned on and off and the fuel open-close cock is opened and closed adequately by the actuation of a rotary valve in response to the turning of a lever. An engine stop switch and a fuel open-close lock are integrally incorporated in a throttle lever case, a partially toothless driven gear is intermittently rotated via a partially toothless drive gear 4 rotated by a lever 6, and the intermittent rotation of the partially toothless driven gear turns on/off the engine stop switch and opens/closes the fuel open/close cock.
    Type: Application
    Filed: January 10, 2007
    Publication date: October 11, 2007
    Applicant: Mikasa Sangyo Co., Ltd.
    Inventors: Giichi Tanaka, Yoshinori Harashima, Kenichi Nagasawa, Kenichi Muramoto
  • Publication number: 20070137975
    Abstract: In a vibration compaction machine such as a rammer, a lining wear dust is prevented from accumulating inside a clutch drum due to oblique attachment of a centrifugal clutch, such that the input shaft side is high and the output shaft side is low because of a forward tilted posture of the machine body. Discharge ports for a lining wear dust are opened with a spacing therebetween in a corner section of a disk-shaped wall surface and an annular circumferential surface of a clutch drum in a centrifugal clutch that is disposed obliquely so that the input shaft is high and an output shaft is low, the discharge ports being obtained by cutting out portions of the annular circumferential surface close to the corner section.
    Type: Application
    Filed: November 22, 2006
    Publication date: June 21, 2007
    Applicant: Mikasa Sangyo Co., Ltd.
    Inventors: Giichi Tanaka, Yoshinori Harashima, Kenichi Nagasawa, Kenichi Muramoto
  • Patent number: D543996
    Type: Grant
    Filed: August 8, 2006
    Date of Patent: June 5, 2007
    Assignee: Mikasa Sangyo Co., Ltd.
    Inventors: Giichi Tanaka, Yoshinori Harashima, Kenichi Nagasawa, Kenichi Muramoto
  • Patent number: D571826
    Type: Grant
    Filed: August 8, 2006
    Date of Patent: June 24, 2008
    Assignee: Mikasa Sangyo Co., Ltd.
    Inventors: Giichi Tanaka, Yoshinori Harashima, Kenichi Nagasawa, Kenichi Muramoto