Patents by Inventor Hirotaka Shimizu

Hirotaka Shimizu 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: 11970204
    Abstract: A steering device includes a steering column for supporting a steering shaft coupled to a steering wheel; an upper bracket fixed to a vehicle body and supports the steering column; and two lower brackets independently fixed to the vehicle body on both sides of the steering column to support the steering column in such a manner that allows the steering column to sway in a vertical direction. The lower brackets each includes a fixed portion facing the vehicle body and disposed on an outside of the steering column in a vehicle width direction, a pivot portion facing the steering column and having an attachment hole into which a pin member for coupling the steering column to the lower bracket is inserted, and a pair of rib portions each connected to the fixed portion and the pivot portion by a bent portion shaped into a bent plate.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: April 30, 2024
    Assignee: NSK LTD.
    Inventors: Yoshiyuki Sato, Tomohiro Ikuta, Suguru Sugishita, Hirotaka Shimizu
  • Publication number: 20240116557
    Abstract: A steering device includes a cylindrical steering column that extends in an axial direction. The steering column includes: an upper column; a lower column; and a fixing member. The fixing member includes a cylindrical part, and the cylindrical part includes: a small diameter part that is fitted to the lower column; a curved part that has an outer circumferential surface whose outer diameter increases toward the other side in the axial direction; and a large diameter part whose outer diameter is larger than an outer diameter of the small diameter part.
    Type: Application
    Filed: July 2, 2022
    Publication date: April 11, 2024
    Applicant: NSK Ltd.
    Inventors: Suguru SUGISHITA, Hirotaka SHIMIZU, Kouhei TAKEISHI
  • Publication number: 20240109580
    Abstract: A steering device includes: a steering shaft which extends along a central axis and to which a steering wheel is coupled on one side in an axial direction; a tubular steering column which is disposed on an outer circumferential side of the steering shaft and extends in the axial direction; and a gearbox which is disposed on the other side in the axial direction of the steering column and is fixed to the steering column. The steering column includes a fixing member provided at an end on the other side in the axial direction and fixed to the gearbox, and an outer circumferential surface on one side in the axial direction of the fixing member has an outer diameter which increases toward the other side in the axial direction.
    Type: Application
    Filed: February 2, 2022
    Publication date: April 4, 2024
    Applicant: NSK LTD.
    Inventors: Suguru SUGISHITA, Hirotaka SHIMIZU, Kouhei TAKEISHI
  • Patent number: 11912333
    Abstract: A steering device includes a steering shaft, a steering column, a bracket, and a fastening mechanism. An upper column includes a clamp, a cylindrical part, a pair of protrusions, and contact ribs. The clamp includes a continuous clamp and a spaced clamp. The protrusions include a continuous protrusion and a spaced protrusion. The contact ribs include first contact ribs disposed each of which is disposed on the outer peripheral surface of the clamp, second contact ribs each of which is disposed on a side surface of the protrusion and disposed opposite to the first contact rib with respect to a long groove, and at least one third contact rib disposed on a side surface of the spaced protrusion and between the first contact rib and the long groove. The third contact rib has a protrusion amount greater than those of the first contact rib and the second contact rib.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: February 27, 2024
    Assignee: NSK LTD.
    Inventors: Tomohiro Ikuta, Yoshiyuki Sato, Suguru Sugishita, Hirotaka Shimizu
  • Publication number: 20230143959
    Abstract: The steering device includes a steering shaft, a steering column, a bracket, and a fastening mechanism. The steering column includes a lower column and an upper column. The upper column includes a clamp, a cylindrical part, a pair of protrusions, and a reinforcement rib that extends across an outer peripheral surface of the clamp and an outer surface of one of the protrusions. The clamp includes a continuous clamp positioned near the cylindrical part and a spaced clamp spaced apart from the cylindrical part. The protrusions include a continuous protrusion that protrudes from the continuous clamp, and a spaced protrusion that protrudes from the spaced clamp. The reinforcement rib linearly extends from the spaced protrusion toward the continuous clamp.
    Type: Application
    Filed: March 25, 2021
    Publication date: May 11, 2023
    Applicant: NSK LTD.
    Inventors: Tomohiro IKUTA, Yoshiyuki SATO, Suguru SUGISHITA, Hirotaka SHIMIZU
  • Publication number: 20230143956
    Abstract: A steering device includes a telescopic steering shaft that extends in a first direction, and a cylindrical outer steering column that rotatably supports the steering shaft. The steering column includes a lower column and an upper column having one end slidably attached to the lower column and the other end on which a bearing that supports the steering shaft is provided. The upper column includes a clamp that is externally slidably fitted to the lower column and that has a slit extending in the first direction, and a cylindrical part that has a cylindrical shape and that has one end continuous with the clamp and the other end blocked by the bearing being internally fitted. The cylindrical part has an air hole that is spaced apart from the one end of the cylindrical part and that penetrates an outer peripheral surface and an inner peripheral surface of the cylindrical part.
    Type: Application
    Filed: March 25, 2021
    Publication date: May 11, 2023
    Applicant: NSK LTD.
    Inventors: Tomohiro IKUTA, Yoshiyuki SATO, Suguru SUGISHITA, Hirotaka SHIMIZU
  • Publication number: 20230132450
    Abstract: A steering device includes a steering shaft, a steering column, a bracket, and a fastening mechanism. An upper column includes a clamp, a cylindrical part, a pair of protrusions, and contact ribs. The clamp includes a continuous clamp and a spaced clamp. The protrusions include a continuous protrusion and a spaced protrusion. The contact ribs include first contact ribs disposed each of which is disposed on the outer peripheral surface of the clamp, second contact ribs each of which is disposed on a side surface of the protrusion and disposed opposite to the first contact rib with respect to a long groove, and at least one third contact rib disposed on a side surface of the spaced protrusion and between the first contact rib and the long groove. The third contact rib has a protrusion amount greater than those of the first contact rib and the second contact rib.
    Type: Application
    Filed: March 25, 2021
    Publication date: May 4, 2023
    Applicant: NSK LTD.
    Inventors: Tomohiro IKUTA, Yoshiyuki SATO, Suguru SUGISHITA, Hirotaka SHIMIZU
  • Publication number: 20230125973
    Abstract: A steering device includes a steering column for supporting a steering shaft coupled to a steering wheel; an upper bracket fixed to a vehicle body and supports the steering column; and two lower brackets independently fixed to the vehicle body on both sides of the steering column to support the steering column in such a manner that allows the steering column to sway in a vertical direction. The lower brackets each includes a fixed portion facing the vehicle body and disposed on an outside of the steering column in a vehicle width direction, a pivot portion facing the steering column and having an attachment hole into which a pin member for coupling the steering column to the lower bracket is inserted, and a pair of rib portions each connected to the fixed portion and the pivot portion by a bent portion shaped into a bent plate.
    Type: Application
    Filed: March 25, 2021
    Publication date: April 27, 2023
    Applicant: NSK LTD.
    Inventors: Yoshiyuki SATO, Tomohiro IKUTA, Suguru SUGISHITA, Hirotaka SHIMIZU
  • Patent number: 9777891
    Abstract: An LED lamp A1 includes a plurality of LED modules 1 and a substrate 2 on which the LED modules 1 are mounted in a row. A light guide 3 covering the LED modules 1 is provided on the substrate 2. The light guide 3 is held in close contact with each of the LED modules. With this arrangement, a proper amount of light is obtained with the use of a smaller number of LED modules 1 or with less power consumption.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: October 3, 2017
    Assignee: IRIS OHYAMA INC.
    Inventors: Yusaku Kawabata, Hiroshi Fukumoto, Takao Iemoto, Toshio Watanabe, Hideharu Osawa, Hiroyuki Fukui, Hirotaka Shimizu
  • Patent number: 9769913
    Abstract: The present invention provides a burst-laser generator using an optical resonator which produces high pulse-strength of burst-laser in order to conduct laser Compton scattering, comprising: a self-oscillation amplifying optical loop-path and an external optical resonator to burst-amplify laser, wherein, laser supplied by an exciting laser source is self-oscillation amplified with the self-oscillation amplifying optical loop-path and further burst-amplified with the external optical resonator.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: September 19, 2017
    Assignee: INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION HIGH ENERGY ACCELERATOR RESEARCH ORGANIZATION
    Inventors: Junji Urakawa, Hirotaka Shimizu
  • Patent number: 9599288
    Abstract: An LED lamp includes a plurality of LED modules arranged in direction x, a tubular enclosure for housing the LED modules that is open at ends spaced from each other in direction x, and end caps respectively closing the ends of the tubular enclosure in direction x. Each of the end caps is configured to diffuse light from the LED modules while transmitting the light, and includes an emission surface for emitting light in a direction z perpendicular to direction x. This arrangement ensures that the LED lamp has a good appearance even when it is made long.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: March 21, 2017
    Assignee: IRIS OHYAMA INC.
    Inventors: Hirotaka Shimizu, Mitsunori Nagashima
  • Patent number: 9562654
    Abstract: An LED lamp includes: a plurality of light source units, each of which includes one or more LED chips and an emission surface through which light from the LED chips is emitted; and a lens unit having a plurality of lenses, each of which is located in front of the emission surface of each of the plurality of light source units.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: February 7, 2017
    Assignee: Rohm Co., Ltd.
    Inventor: Hirotaka Shimizu
  • Publication number: 20160258609
    Abstract: An LED lighting apparatus includes an LED light-emitting unit, a radar detector, a controller, and a translucent cover. The LED light-emitting unit has a plurality of LED chips. The radar detector transmits radio waves, receives radio waves reflected by an object, and detects a movement of the object based on a change in a wavelength of the received radio waves. The controller controls light emission of the LED light-emitting unit based on a result of the detection by the radar detector. The translucent cover covers the LED light-emitting unit in a main emission direction in which a center of the light emitted from the LED light-emitting unit travels, and allows light from the LED light-emitting unit and the radio waves from the radar detector to pass through. The radar detector is surrounded by the LED light-emitting unit in the main emission direction.
    Type: Application
    Filed: February 24, 2016
    Publication date: September 8, 2016
    Inventors: Yoshifumi FUJIMOTO, Hirotaka SHIMIZU, Hideharu OSAWA, Hiroki YONEDA
  • Publication number: 20160245465
    Abstract: An LED lamp includes a plurality of LED modules arranged in direction x, a tubular enclosure for housing the LED modules that is open at ends spaced from each other in direction x, and end caps respectively closing the ends of the tubular enclosure in direction x. Each of the end caps is configured to diffuse light from the LED modules while transmitting the light, and includes an emission surface for emitting light in a direction z perpendicular to direction x. This arrangement ensures that the LED lamp has a good appearance even when it is made long.
    Type: Application
    Filed: May 2, 2016
    Publication date: August 25, 2016
    Inventors: Hirotaka SHIMIZU, Mitsunori NAGASHIMA
  • Patent number: 9347618
    Abstract: An LED lamp includes a plurality of LED modules arranged in direction x, a tubular enclosure for housing the LED modules that is open at ends spaced from each other in direction x, and end caps respectively closing the ends of the tubular enclosure in direction x. Each of the end caps is configured to diffuse light from the LED modules while transmitting the light, and includes an emission surface for emitting light in a direction z perpendicular to direction x. This arrangement ensures that the LED lamp has a good appearance even when it is made long.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: May 24, 2016
    Assignee: ROHM CO., LTD.
    Inventors: Hirotaka Shimizu, Mitsunori Nagashima
  • Publication number: 20150373823
    Abstract: The present invention provides a burst-laser generator using an optical resonator which produces high pulse-strength of burst-laser in order to conduct laser Compton scattering, comprising: a self-oscillation amplifying optical loop-path and an external optical resonator to burst-amplify laser, wherein, laser supplied by an exciting laser source is self-oscillation amplified with the self-oscillation amplifying optical loop-path and further burst-amplified with the external optical resonator.
    Type: Application
    Filed: February 1, 2013
    Publication date: December 24, 2015
    Inventors: Junji URAKAWA, Hirotaka SHIMIZU
  • Publication number: 20150330582
    Abstract: An LED lamp includes: a plurality of light source units, each of which includes one or more LED chips and an emission surface through which light from the LED chips is emitted; and a lens unit having a plurality of lenses, each of which is located in front of the emission surface of each of the plurality of light source units.
    Type: Application
    Filed: July 27, 2015
    Publication date: November 19, 2015
    Inventor: Hirotaka SHIMIZU
  • Publication number: 20150316217
    Abstract: An LED lamp includes a plurality of LED modules arranged in direction x, a tubular enclosure for housing the LED modules that is open at ends spaced from each other in direction x, and end caps respectively closing the ends of the tubular enclosure in direction x. Each of the end caps is configured to diffuse light from the LED modules while transmitting the light, and includes an emission surface for emitting light in a direction z perpendicular to direction x. This arrangement ensures that the LED lamp has a good appearance even when it is made long.
    Type: Application
    Filed: July 16, 2015
    Publication date: November 5, 2015
    Inventors: Hirotaka SHIMIZU, Mitsunori NAGASHIMA
  • Publication number: 20150247607
    Abstract: An LED lamp A1 includes a plurality of LED modules 1 and a substrate 2 on which the LED modules 1 are mounted in a row. A light guide 3 covering the LED modules 1 is provided on the substrate 2. The light guide 3 is held in close contact with each of the LED modules. With this arrangement, a proper amount of light is obtained with the use of a smaller number of LED modules 1 or with less power consumption.
    Type: Application
    Filed: May 18, 2015
    Publication date: September 3, 2015
    Inventors: Yusaku KAWABATA, Hiroshi FUKUMOTO, Takao IEMOTO, Toshio WATANABE, Hideharu OSAWA, Hiroyuki FUKUI, Hirotaka SHIMIZU
  • Patent number: 9121554
    Abstract: An LED lamp includes: a plurality of light source units, each of which includes one or more LED chips and an emission surface through which light from the LED chips is emitted; and a lens unit having a plurality of lenses, each of which is located in front of the emission surface of each of the plurality of light source units.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: September 1, 2015
    Assignee: Rohm Co., Ltd.
    Inventor: Hirotaka Shimizu