Patents by Inventor Tomoki Ito

Tomoki Ito 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: 10311984
    Abstract: The shaft sealing structure includes a seal ring that has abutment portions formed by dividing the seal ring along the axial direction and that is provided around a main shaft in a ring-like manner; a support member that is provided in the seal ring along the circumferential direction of the main shaft; and a thermoswitch that is connected to the support member between the abutment portions and that presses the support member toward the center of the main shaft when the temperature rises to a temperature higher than that during normal operation, in which the seal ring is fixed at a position separated from the main shaft during the normal operation and is moved by the support member toward the center of the main shaft when the temperature rises to a temperature higher than that during the normal operation.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: June 4, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kentarou Saeki, Hidekazu Uehara, Akihiko Umeda, Masaru Sakai, Hiroshi Kuzumi, Yasuhiro Ikeda, Toshihiko Matsuo, Takanobu Otani, Hiroomi Sakuma, Hitoshi Ito, Yasushi Takayama, Tomoki Hanada, Yuji Harada
  • Publication number: 20190006957
    Abstract: A bridge circuit converts input direct-current voltage and outputs alternating-current voltage. A filter circuit attenuates a high-frequency component of the alternating-current voltage output from the bridge circuit. A clamping circuit is disposed between the bridge circuit and the filter circuit, and is capable of short-circuiting the output side of the bridge circuit. A control circuit has a first mode in which a switching element causes the alternating-current voltage to be output to the filter circuit at three or more voltage levels, and a second mode in which the switching element causes the alternating-current voltage to be output to the filter circuit at two voltage levels. When power conversion devices have their alternating-current side output paths connected and operate in parallel, at least one of the power conversion devices operating in parallel operates in the second mode.
    Type: Application
    Filed: November 28, 2016
    Publication date: January 3, 2019
    Inventors: Tomoki ITO, Yusuke IWAMATSU
  • Publication number: 20180177124
    Abstract: A cutter blade of a lawn mower includes a blade body and flaps. The blade body includes a shape with a sweepback angle inclined in a reverse-rotation direction of the cutter blade. The flap pivotal axis is provided along a blade edge without intersecting with a blade rotational axis. A flap pivotal axis is provided at a position offset from a line perpendicular to the blade rotational axis and in parallel to the pivotal axis, in a rotation direction of the cutter blade.
    Type: Application
    Filed: December 22, 2017
    Publication date: June 28, 2018
    Inventors: Koji Kuriyagawa, Hajime Yoshimura, Tomoki Ito, Hideaki Kobayashi
  • Patent number: 9902448
    Abstract: In a utility vehicle having a body and driven wheels rotatably fastened to the body, auxiliary driven wheels, having an outer diameter smaller than that of the driven wheels and a width equal to or smaller than that of the driven wheels, are coaxially fixed to the driven wheels.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: February 27, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takaaki Kato, Tomoki Ito, Susumu Okubo
  • Publication number: 20170210105
    Abstract: The present invention is to provide a biaxially-stretched layer polyamide film which is excellent in bag breakage resistance, impact resistance and bending fatigue resistance, particularly in bending fatigue resistance under low-temperature environments, is excellent in an effect such as bag breakage prevention during transportation or storage of products when used as a packaging material for packaging foods or the like, can exhibit both high heat seal strength and good appearance even when being automatically filled with a liquid soup, a seasoning agent, or the like at a high speed, and further has improved volume reduction performance and environmental friendliness as compared with conventional polyamide films, and is thus suitable for various packaging applications, particularly for packaging bags for filling liquid materials such as soup and sauce. The biaxially-stretched layer polyamide film comprising: an A layer of a mixed polymer containing 97 to 70 wt. % of an aliphatic homopolyamide, 3 to 20 wt.
    Type: Application
    Filed: June 15, 2015
    Publication date: July 27, 2017
    Applicant: TOYOBO CO., LTD.
    Inventors: Takuro ENDO, Tomoki ITO
  • Publication number: 20170184829
    Abstract: Comprising a first lens group G1 having positive refractive power, disposed at the most object side, and an image side lens group disposed at a side closer to an image than the first lens group G1, upon zooming, at least a distance between the first lens group G1 and the image side lens group being varied, the image side lens group comprising a vibration reduction lens group GVR which is moved so as to have a component in a direction perpendicular to the optical axis and a focusing lens group GF which is moved along the optical axis upon focusing, thereby providing a variable magnification optical system which has a higher optical performance, an optical apparatus and a method for manufacturing a variable magnification optical system.
    Type: Application
    Filed: January 29, 2017
    Publication date: June 29, 2017
    Inventor: Tomoki ITO
  • Publication number: 20170068076
    Abstract: The art is formed of, disposed in order from an object, a first lens group (G1) having positive refractive power, a second lens group (G2) having negative refractive power, and a third lens group (G3) having positive refractive power, in which at least a part of the second lens group (G2) or at least a part of the third lens group (G3) is configured to be movable, as a vibration-proof lens group for correcting an image blur, so as to have a component in a direction perpendicular to an optical axis, and the following conditional expression is satisfied: 4.40<f1/(?f2)<8.00 where f1 denotes a focal length of the first lens group (G1), and f2 denotes a focal length of the second lens group (G2).
    Type: Application
    Filed: September 6, 2016
    Publication date: March 9, 2017
    Inventors: Tomoki ITO, Hiroshi YAMAMOTO
  • Publication number: 20160052575
    Abstract: In a utility vehicle having a body and driven wheels rotatably fastened to the body, auxiliary driven wheels, having an outer diameter smaller than that of the driven wheels and a width equal to or smaller than that of the driven wheels, are coaxially fixed to the driven wheels.
    Type: Application
    Filed: August 14, 2015
    Publication date: February 25, 2016
    Inventors: Takaaki Kato, Tomoki Ito, Susumu Okubo
  • Publication number: 20160025955
    Abstract: A zooming optical system is provided, which is constituted by, in order from an object: a first lens group having positive refractive power; a second lens group having negative refractive power; a third lens group having positive refractive power; a fourth lens group having negative refractive power; and a fifth lens group having positive refractive power. In the zooming optical system, the first lens group is moved along the optical axis upon zooming, at least a part of the second lens group to the fifth lens group being moved so as to include a component orthogonal to the optical axis, and the following conditional expressions are satisfied: 4.41<f1/(?f2)<5.33 and 2.15<f1/f3<4.95, where f1 denotes a focal length of the first lens group, f2 denotes a focal length of the second lens group, and f3 denotes a focal length of the third lens group.
    Type: Application
    Filed: July 26, 2015
    Publication date: January 28, 2016
    Inventor: Tomoki ITO
  • Patent number: 9204707
    Abstract: A shoulder harness for a portable work machine comprises a back member that is to be located on a back of an operator, said back member including a main frame, to which a downward extension frame connected with a waist belt is detachably attached; right and left shoulder belts that respectively extend from right and left upper end portions of said back member; a joint buckle that is to be located on a chest of said operator, distal ends of said right and left shoulder belts being connected to said joint buckle; a hip pad that is to be located on a side of a waist of said operator, and is provided with a locking device, to which a work machine is connected; a relay member that is located above said locking device, and is connected to said locking device by a hanging member; a rear suspension belt that is connected to said relay member and said back member; and a front suspension belt that is connected to said relay member and said joint buckle.
    Type: Grant
    Filed: August 18, 2014
    Date of Patent: December 8, 2015
    Assignee: Yamabiko Corporation
    Inventors: Tomoki Ito, Masaki Takeda, Keita Kamo
  • Patent number: 9157486
    Abstract: A pipe-shaped fixture (100) to be attached to a housing (120) of a work machine includes a fixture body (102) having a front-end projection (110) and a rear-end projection (112) that make front and rear limits of a rubber cushion (104) that encloses the fixture body (102) closely and circumferentially. The front- and rear-end projections (110, 112) are connected to each other by a plurality of longitudinally extending ridges (114) formed at circumferential intervals. The ridges (114), front- and rear-end projections (110, 112) define a plurality of concavities (116) surrounded thereby on the outer circumference of the fixture body (102). The front- and rear-end projections (110, 112) cause longitudinal vibration of an operation rod (130) relative to the housing (120) to act as a compression force on the rubber cushion (104), and thereby suppress longitudinal vibration of the operation rod (130) while maintaining effects of suppressing horizontal and vertical vibrations.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: October 13, 2015
    Assignee: Yamabiko Corporation
    Inventors: Yoichi Miyahara, Tomoki Ito, Masanori Ohtani, Shunsuke Nakadate
  • Patent number: 9091841
    Abstract: A zoom optical system ZL to be mounted on an optical apparatus such as a single lens reflex camera 1, comprising, in order from an object side, a first lens group G1 having positive refractive power, a second lens group G2 having negative refractive power, a third lens group G3 having positive refractive power, a fourth lens group G4 having negative refractive power, a fifth lens group G5 having positive refractive power, and a sixth lens group G6 having negative refractive power. The zoom optical system is configured such that at least a portion of any one lens group among these lens group G1 to G6 may be moved such that a component in a direction perpendicular to the optical axis may be included. Thus, there are provided a zoom optical system that can suppress well variation in aberrations upon zooming, an optical apparatus equipped therewith and a method for manufacturing the zoom optical system.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: July 28, 2015
    Assignee: Nikon Corporation
    Inventor: Tomoki Ito
  • Publication number: 20150053731
    Abstract: A shoulder harness for a portable work machine comprises a back member that is to be located on a back of an operator, said back member including a main frame, to which a downward extension frame connected with a waist belt is detachably attached; right and left shoulder belts that respectively extend from right and left upper end portions of said back member; a joint buckle that is to be located on a chest of said operator, distal ends of said right and left shoulder belts being connected to said joint buckle; a hip pad that is to be located on a side of a waist of said operator, and is provided with a locking device, to which a work machine is connected; a relay member that is located above said locking device, and is connected to said locking device by a hanging member; a rear suspension belt that is connected to said relay member and said back member; and a front suspension belt that is connected to said relay member and said joint buckle.
    Type: Application
    Filed: August 18, 2014
    Publication date: February 26, 2015
    Inventors: Tomoki Ito, Masaki Takeda, Keita Kamo
  • Patent number: 8941921
    Abstract: An optical system includes, in order from an object side, a first lens group having positive refractive power, a second lens group having negative refractive power, and a third lens group having positive refractive power. The second lens group is moved upon carrying out focusing from an infinitely distant object to a close object, at least a portion of the third lens group is moved in a direction including a component perpendicular to an optical axis, and given conditional expressions is satisfied. Accordingly, an optical system excellently suppressing variations in aberrations generated upon vibration reduction, an optical apparatus equipped therewith, and a method for manufacturing the optical system are provided.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: January 27, 2015
    Assignee: Nikon Corporation
    Inventors: Tomoki Ito, Issei Tanaka
  • Patent number: 8730584
    Abstract: A variable magnification optical system ZL to be mounted on an electronic still camera 1 or the like is configured to have, in order from the object side, a first lens unit G1 having a positive refractive power, a second lens unit G2 having a negative refractive power, a third lens unit G3 having a positive refractive power, a fourth lens unit G4 having a negative refractive power, and a fifth lens unit G5 having a positive refractive power, and configured in such a manner that, in variable magnification, the first lens unit G1 is fixed, that, in focusing, the third lens unit G3 moves, and that at least a part of the fifth lens unit G5 moves so as to have a component in a substantially orthogonal direction to the optical axis.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: May 20, 2014
    Assignee: Nikon Corporation
    Inventor: Tomoki Ito
  • Patent number: 8611761
    Abstract: New method to control the optical transmitter is disclosed. The optical transmitter provides both of the ATC feedback loop and the APC feedback loop. When a failure occurs in the ATC feedback loop and the temperature sensor is unable to output an adequate signal any longer, the optical transmitter cuts the APC loop and operates the LD in constant conditions. The output of the monitor PD is transferred to the ATC loop to control the TEC based on the optical output of the LD.
    Type: Grant
    Filed: January 4, 2011
    Date of Patent: December 17, 2013
    Assignee: Sumitomo Electric Device Innovations, Inc.
    Inventors: Ryutaro Takei, Takeshi Irie, Tomoki Ito, Kazuhisa Ozaki, Masatsugu Togasaki
  • Patent number: 8605362
    Abstract: A zoom lens system includes, in order from an object side: a first lens group having positive refractive power; a second lens group having negative refractive power; a third lens group having positive refractive power; a fourth lens group having negative refractive power; and a fifth lens group having positive refractive power. Upon zooming from a wide-angle end state to a telephoto end state, a position of the first lens group is fixed. At least a portion of any one of the lens groups is moved in a direction including a component perpendicular to an optical axis, and a given conditional expression is satisfied, thereby providing a zoom lens system capable of excellently suppressing variation in aberrations upon zooming and upon correcting an image blur, an optical apparatus including the zoom lens system, and a method for manufacturing the zoom lens system.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: December 10, 2013
    Assignee: Nikon Corporation
    Inventor: Tomoki Ito
  • Publication number: 20130258495
    Abstract: A zoom optical system ZL to be mounted on an optical apparatus such as a single lens reflex camera 1, comprising, in order from an object side, a first lens group G1 having positive refractive power, a second lens group G2 having negative refractive power, a third lens group G3 having positive refractive power, a fourth lens group G4 having negative refractive power, a fifth lens group G5 having positive refractive power, and a sixth lens group G6 having negative refractive power. The zoom optical system is configured such that at least a portion of any one lens group among these lens group G1 to G6 may be moved such that a component in a direction perpendicular to the optical axis may be included. Thus, there are provided a zoom optical system that can suppress well variation in aberrations upon zooming, an optical apparatus equipped therewith and a method for manufacturing the zoom optical system.
    Type: Application
    Filed: December 14, 2011
    Publication date: October 3, 2013
    Inventor: Tomoki Ito
  • Patent number: 8522837
    Abstract: Gas canister retaining structure includes: a gas canister cover pivotable between an opened position for attaching/detaching a cassette gas canister to/from the retaining structure and a closed position for accommodating and holding the gas canister in place within the canister cover; a mouthpiece support section provided inside the gas canister cover for supporting a mouthpiece portion of the cassette gas canister with a jet nozzle of the cassette gas canister received in a nozzle receiving port provided in the mouthpiece support section; and a shutter member pivotable between an opened position for opening the nozzle receiving port and a closed position for closing the nozzle receiving port.
    Type: Grant
    Filed: December 24, 2008
    Date of Patent: September 3, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Hideaki Kobayashi, Masayuki Sasaoka, Tomoki Ito
  • Patent number: D788823
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: June 6, 2017
    Assignee: Yamabiko Corporation
    Inventor: Tomoki Ito