Patents by Inventor Koichi Sekiguchi

Koichi Sekiguchi 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: 11447626
    Abstract: Containing an epoxy compound and a curing agent and containing a bisphenol E type epoxy resin as the epoxy compound in an amount of 25 mass % or more and 100 mass % or less relative to the total amount of the epoxy compound.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: September 20, 2022
    Assignee: KOKI COMPANY LIMITED
    Inventors: Takeshi Yahagi, Kazuhiro Yukikata, Koichi Sekiguchi, Yusuke Satoh, Tatsuya Baba, Mitsuyasu Furusawa
  • Publication number: 20200325326
    Abstract: Containing an epoxy compound and a curing agent and containing a bisphenol E type epoxy resin as the epoxy compound in an amount of 25 mass % or more and 100 mass % or less relative to the total amount of the epoxy compound.
    Type: Application
    Filed: November 1, 2018
    Publication date: October 15, 2020
    Applicant: KOKI COMPANY LIMITED
    Inventors: Takeshi Yahagi, Kazuhiro Yukikata, Koichi Sekiguchi, Yusuke Satoh, Tatsuya Baba, Mitsuyasu Furusawa
  • Patent number: 8984971
    Abstract: In a parallel slider device with a pneumatic linear guide, the stiffness of the mechanical coupling and the air bearing stiffness are prevented from interfering each other such that the parallelism between the two sliders can be maintained at a high precision in a highly reproducible manner. A difference in the slider support stiffness (air bearing stiffness) between a first pneumatic linear guide and a second pneumatic linear guide by varying the sizes of the air gaps and the supply air pressures so that any error in the linearity is accommodated by the changes in the air gap on the side of the linear guide having a lower slider support stiffness in a stable manner.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: March 24, 2015
    Assignee: Kuroda Precision Industries Ltd.
    Inventors: Kaoru Naoi, Yoichi Ishizaki, Tatsuhito Inouchi, Koichi Sekiguchi
  • Publication number: 20120318078
    Abstract: In a parallel slider device with a pneumatic linear guide, the stiffness of the mechanical coupling and the air bearing stiffness are prevented from interfering each other such that the parallelism between the two sliders can be maintained at a high precision in a highly reproducible manner. A difference in the slider support stiffness (air bearing stiffness) between a first pneumatic linear guide and a second pneumatic linear guide by varying the sizes of the air gaps and the supply air pressures so that any error in the linearity is accommodated by the changes in the air gap on the side of the linear guide having a lower slider support stiffness in a stable manner.
    Type: Application
    Filed: March 10, 2010
    Publication date: December 20, 2012
    Applicant: KURODA PRECISION INDUSTRIES LTD
    Inventors: Kaoru Naoi, Yoichi Ishizaki, Tatsuhito Inouchi, Koichi Sekiguchi
  • Publication number: 20100107880
    Abstract: A hollow fiber membrane dehumidifier includes: a dehumidification container composed of a lower trunk provided with an exhaust gas inlet section, an upper trunk provided with an exhaust gas outlet, and a body trunk; a lower tube plate for constructing an exhaust gas inlet chamber in the body trunk; an upper tube plate for constructing an exhaust gas outlet chamber in the body trunk; a partition plate for partitioning the interior of the body trunk to an exhaust gas processing chamber and a purge gas chamber; a plurality of hollow fiber membrane modules inserted into each through hole of an upper tube plate, the partition plate and the lower tube plate; and a sealing material held in sealing groove formed in the hollow fiber membrane module for sealing among an upper head, a lower head, the upper tube plate, the partition plate and the lower tube plate.
    Type: Application
    Filed: December 28, 2009
    Publication date: May 6, 2010
    Inventor: Koichi SEKIGUCHI
  • Patent number: 7354259
    Abstract: There is provided a scroll compressor having high overall adiabatic efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: April 8, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Isamu Tsubono, Masahiro Takebayashi, Isao Hayase, Koichi Inaba, Koichi Sekiguchi, Kenichi Oshima, Atsushi Shimada, Takehiro Akizawa
  • Patent number: 7137796
    Abstract: There is provided a scroll compressor having high overall adiabatic efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: November 21, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Isamu Tsubono, Masahiro Takebayashi, Isao Hayase, Koichi Inaba, Koichi Sekiguchi, Kenichi Oshima, Atsushi Shimada, Takehiro Akizawa
  • Patent number: 7118358
    Abstract: There is provided a scroll compressor having high overall adiabatic efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: October 10, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Isamu Tsubono, Masahiro Takebayashi, Isao Hayase, Koichi Inaba, Koichi Sekiguchi, Kenichi Oshima, Atsushi Shimada, Takehiro Akizawa
  • Publication number: 20060057010
    Abstract: There is provided a scroll compressor having high overall adiabatic efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.
    Type: Application
    Filed: November 4, 2005
    Publication date: March 16, 2006
    Inventors: Isamu Tsubono, Masahiro Takebayashi, Isao Hayase, Koichi Inaba, Koichi Sekiguchi, Kenichi Oshima, Atsushi Shimada, Takehiro Akizawa
  • Publication number: 20060051226
    Abstract: There is provided a scroll compressor having high overall adiabatic efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.
    Type: Application
    Filed: November 4, 2005
    Publication date: March 9, 2006
    Inventors: Isamu Tsubono, Masahiro Takebayashi, Isao Hayase, Koichi Inaba, Koichi Sekiguchi, Kenichi Oshima, Atsushi Shimada, Takehiro Akizawa
  • Publication number: 20040247476
    Abstract: There is provided a scroll compressor having high overall adiabatic efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.
    Type: Application
    Filed: July 9, 2004
    Publication date: December 9, 2004
    Inventors: Isamu Tsubono, Masahiro Takebayashi, Isao Hayase, Koichi Inaba, Koichi Sekiguchi, Kenichi Oshima, Atsushi Shimada, Takehiro Akizawa
  • Patent number: 6769888
    Abstract: There is provided a scroll compressor having high overall adiabatic efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.
    Type: Grant
    Filed: April 21, 2003
    Date of Patent: August 3, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Isamu Tsubono, Masahiro Takebayashi, Isao Hayase, Koichi Inaba, Koichi Sekiguchi, Kenichi Oshima, Atsushi Shimada, Takehiro Akizawa
  • Patent number: 6637550
    Abstract: A displacement type fluid machine has a first lubricating fluid pump, provided at the rotating shaft and immersed in the lubricating fluid stored in the lubricating fluid-storing chamber, for feeding lubricating fluid to a first one of the two sliding portions via a lubricating fluid-guiding path formed at the rotating shaft; a second lubricating fluid pump, provided at the rotating shaft, for raising the pressure of lubricating fluid which has been fed via the lubricating fluid-guiding path by a predetermined pump head, and for feeding that lubricating fluid to a second one of the two sliding portions; and a third lubricating fluid pump, which is provided at or near the rotating shaft, for raising the pressure of lubricating fluid which has been fed via the lubricating fluid-guiding path by a predetermined pump head, and for feeding that lubricating fluid to a third one of the two sliding portions.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: October 28, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Masaki Koyama, Isamu Tsubono, Isao Hayase, Yuugo Mukai, Koichi Sekiguchi, Kenichi Oshima
  • Publication number: 20030190247
    Abstract: There is provided a scroll compressor having high overall adiabatic efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.
    Type: Application
    Filed: April 21, 2003
    Publication date: October 9, 2003
    Inventors: Isamu Tsubono, Masahiro Takebayashi, Isao Hayase, Koichi Inaba, Koichi Sekiguchi, Kenichi Oshima, Atsushi Shimada, Takehiro Akizawa
  • Publication number: 20030164352
    Abstract: A scroll type compressor comprises a stationary scroll and a rotary scroll which is assembled with the stationary scroll so as to define a closed space, the outer surface of the rotary scroll 22 is formed thereon with a tin compound film containing a tin compound and having a thickness of 50 &mgr;m. Such a coating film is never peeled off from a member even after long time operation, and is excellent in sealability and conformability, in the displacement type compressor.
    Type: Application
    Filed: February 26, 2003
    Publication date: September 4, 2003
    Inventors: Yoshishige Endo, Eiichi Satoh, Akihiko Yamamoto, Yuji Yoshitomi, Koichi Inaba, Koichi Sekiguchi
  • Patent number: 6589035
    Abstract: There is provided a scroll compressor having high overall efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.
    Type: Grant
    Filed: October 3, 1997
    Date of Patent: July 8, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Isamu Tsubono, Masahiro Takebayashi, Isao Hayase, Koichi Inaba, Koichi Sekiguchi, Kenichi Oshima, Atsushi Shimada, Takehiro Akizawa
  • Patent number: 6494696
    Abstract: A scroll compressor comprising: a vessel; a compressing mechanism provided within said vessel, the compressing mechanism comprising an orbiting scroll and a non-orbiting scroll each having a spiral wrap formed in a base plate and an Oldham ring for preventing the orbiting scroll from rotating around its axis; an oil reservoir provided within a vessel; a crankshaft for transmitting a power for compressing a working fluid; and a frame on which a main bearing for supporting the crankshaft is provided, wherein the crankshaft is provided with oil supply passages for communicating a vicinity of an orbiting bearing and a vicinity of the main bearing, and openings of the oil supply passages in the vicinity of the orbiting bearing and in the vicinity of the main bearing are positioned so that a pressure of an oil film in the orbiting bearing opening generated during an operation of the compressor is higher than a pressure of an oil film in the-main bearing opening generated during an operation of the compressor.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: December 17, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Toshiyuki Terai, Isao Hayase, Masahiro Takebayashi, Isamu Tsubono, Masaki Koyama, Koichi Sekiguchi
  • Publication number: 20020033305
    Abstract: A displacement type fluid machine is composed of: a first lubricating fluid pump for feeding lubricating-oil which is provided at the rotating shaft, and is immersed in the lubricating fluid stored in the lubricating fluid-storing chamber, for feeding lubricating fluid to a first one of the two sliding portions via a lubricating fluid-guiding path formed at the rotating shaft; a second lubricating fluid pump which is provided at the rotating shaft, for raising the pressure of lubricating fluid which has been fed via the lubricating fluid-guiding path by a predetermined pump head, and feeding the lubricating fluid, which has been fed via the lubricating fluid-guiding path, to a second one of the two sliding portions; and a third lubricating fluid pump which is provided at or near the rotating shaft, for raising the pressure of lubricating fluid which has been fed via the lubricating fluid-guiding path by a predetermined pump head, and feeding the lubricating fluid, which has been fed via the lubricating fluid-
    Type: Application
    Filed: May 16, 2001
    Publication date: March 21, 2002
    Inventors: Masaki Koyama, Isamu Tsubono, Isao Hayase, Yuugo Mukai, Koichi Sekiguchi, Kenichi Oshima
  • Patent number: 6358028
    Abstract: A scroll compressor, in which as a coolant is applied a mixture coolant obtained by mixing at least one or more kinds selected from a group of hydro fluoro carbon, within a closed container thereof, comprising: an electricmotor; a rotary scroll driven with said electric motor; and a stationary scroll, whereby forming a scroll compression mechanism between said rotary scroll for compressing said coolant, wherein said scroll compression mechanism comprises: Oldham ring for supporting said rotary scroll so that said rotary scroll perform a gyrating movement with respect to said stationary scroll without spinning around an axis thereof; and a frame for supporting said Oldham ring in movable manner for purpose of achieving supporting of said rotary scroll mentioned above, wherein said Oldham ring is formed from sintered alloy of iron group, while said frame and said rotary scroll are formed from cast iron, and after treating a steam process thereon, a sliding surface of said Oldham ring is machined by means of an
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: March 19, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Nobuo Abe, Hidenari Takada, Koichi Sekiguchi, Toshio Yamanaka, Shoichi Nakashima
  • Patent number: D658685
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: May 1, 2012
    Assignee: Kuroda Precision Industries Ltd.
    Inventors: Koichi Sekiguchi, Masahiro Iwasaki, Tatsuhito Inouchi