Patents by Inventor Keiichi MORITSUKA

Keiichi MORITSUKA 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: 10309643
    Abstract: A structure for seismic isolation 10 provided on a structure plane 17 including a pair of left and right columns 5, 5 spaced apart in a horizontal direction, and a pair of upper and lower beams 7A, 7B spaced apart in a vertical direction, wherein the structure for seismic isolation comprises: a seismic isolation device 11 provided in a middle of each of the column 5, 5 to be displaced toward the beam 7A; and a horizontal rigid bearing element that is provided between an area in which the seismic isolation device 11 is provided and the beam 7B and that includes a connection beam 13 connecting the pair of columns 5, 5 and vertical braces 15L, 15R.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: June 4, 2019
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Masaki Shimono, Kunihiro Morishita, Motoki Kato, Yuji Kuroda, Tatsuya Amano, Keiichi Moritsuka
  • Patent number: 10100546
    Abstract: In a boiler support structure in which certain seismic isolators are provided with a pullout countermeasure, the seismic isolators to be provided with the pullout countermeasure are individually identified according to whether the seismic isolator satisfies Formula (1): NDn+NEQn>Ntn . . . Formula (1), where NDn (NDn<0) is a compressive load occurring on each of the seismic isolators and calculated on the basis of a permanent load imposed on the boiler support structure; NEQn (NEQn>0) is a pullout force occurring on each of the seismic isolators and calculated on the assumption that an earthquake has occurred; and Ntn (Ntn>0) is an allowable pullout force of each of the seismic isolators and calculated using an allowable pullout stress of each of the seismic isolators.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: October 16, 2018
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Masaki Shimono, Kunihiro Morishita, Motoki Kato, Yuji Kuroda, Tatsuya Amano, Keiichi Moritsuka
  • Publication number: 20180106473
    Abstract: A structure for seismic isolation 10 provided on a structure plane 17 including a pair of left and right columns 5, 5 spaced apart in a horizontal direction, and a pair of upper and lower beams 7A, 7B spaced apart in a vertical direction, wherein the structure for seismic isolation comprises: a seismic isolation device 11 provided in a middle of each of the column 5, 5 to be displaced toward the beam 7A; and a horizontal rigid bearing element that is provided between an area in which the seismic isolation device 11 is provided and the beam 7B and that includes a connection beam 13 connecting the pair of columns 5, 5 and vertical braces 15L, 15R.
    Type: Application
    Filed: February 25, 2016
    Publication date: April 19, 2018
    Applicant: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Masaki Shimono, Kunihiro Morishita, Motoki Kato, Yuji Kuroda, Tatsuya Amano, Keiichi Moritsuka
  • Publication number: 20170260767
    Abstract: In a boiler support structure in which certain ones of seismic isolators are provided with a pullout countermeasure, the seismic isolators to be provided with the pullout countermeasure are individually identified according to whether the seismic isolator satisfies Formula (1) : NDn+NEQn>Ntn . . . Formula (1) , where NDn (ND<0) is a compressive load occurring on each of the seismic isolators and calculated on the basis of a permanent load imposed on the boiler support structure; NEQn (NEQn>0) is a pullout force occurring on each of the seismic isolators and calculated on the assumption that an earthquake has occurred; and Ntn (Ntn>0) is an allowable pullout force of each of the seismic isolators and calculated using an allowable pullout stress of each of the seismic isolators.
    Type: Application
    Filed: May 25, 2017
    Publication date: September 14, 2017
    Inventors: Masaki SHIMONO, Kunihiro MORISHITA, Motoki KATO, Yuji KURODA, Tatsuya AMANO, Keiichi MORITSUKA
  • Publication number: 20160265243
    Abstract: A boiler support structure is provided that is capable of significantly reducing an effect of a seismic force and also capable of vibrating integrally during an earthquake. The boiler support structure is provided with a main boiler body (3), a support steel frame (11) that supports the main boiler body (3) in a suspended state and that includes a plurality of pillars (11a) that each stand on a foundation (1) with a pillar legs (11b) placed therebetween and a plurality of beams (11c) that connect the adjacent pillars (11a), and seismic isolation devices (5) that support the plurality of respective pillars (11a). In the boiler support structure (10), seismic isolation characteristics of each of the seismic isolation devices (5) are set in accordance with horizontal reaction forces occurring in the plurality of pillar legs (11b).
    Type: Application
    Filed: December 22, 2014
    Publication date: September 15, 2016
    Inventors: Masaki SHIMONO, Kunihiro MORISHITA, Motoki KATO, Yuji KURODA, Tatsuya AMANO, Keiichi MORITSUKA