Patents by Inventor Kei Sasaki

Kei Sasaki 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: 10992039
    Abstract: An array antenna device, including: a waveguide (1) having a plurality of radiation units (2) arranged on one tube wall thereof, in which the waveguide (1) has a plurality of grooves (3) arranged on an inner side of a tube wall facing the tube wall, movable short-circuit surfaces (4) each electrically short-circuited to an inner wall of one of the grooves (3), and movable short-circuit surface controlling mechanisms (5) for changing positions of the movable short-circuit surfaces (4).
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: April 27, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kei Yokokawa, Jun Goto, Kazunari Kihira, Tomohiro Takahashi, Masataka Otsuka, Narihiro Nakamoto, Toru Fukasawa, Takuro Sasaki, Tomohiro Mizuno
  • Publication number: 20210088080
    Abstract: A sealing device is located between an inner member and an outer member of a rolling bearing that rotate relative to each other and is for sealing a gap between the inner member and the outer member. The inner member includes a cylindrical part and a flange expanding radially outward from the cylindrical part. The sealing device includes: a mounted part that is to be mounted on the outer member of the rolling bearing; an inner annular part extending radially inward from the mounted part; a grease lip formed of an elastic material extending from the inner annular part toward the cylindrical part of the inner member of the rolling bearing; and a side lip formed of an elastic material extending from the inner annular part toward the flange of the inner member of the rolling bearing. A contact width of the side lip to the flange is less than 0.041 mm in a case in which the sealing device is mounted on the rolling bearing.
    Type: Application
    Filed: February 8, 2019
    Publication date: March 25, 2021
    Inventors: Yuichi SHUTO, Kei SASAKI
  • Patent number: 10890184
    Abstract: An object is to obtain a scroll compressor that can reduce an outflow of injection refrigerant into an oil sump, reduce degradation of reliability associated with a decrease in viscosity of refrigerating machine oil stored in the oil sump, and reduce degradation of performance caused by compression of dead volume, and thereby achieve high efficiency, and to also obtain a refrigeration cycle apparatus. An injection port opens only to a suction chamber and is provided in a baseplate of a fixed scroll. In all phases of rotation of a rotation shaft, the injection port is located on an inner side of an outer edge of a structure unit that is configured by meshing a spiral body of the fixed scroll and a spiral body of an orbiting scroll with each other.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: January 12, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Wataru Iwatake, Raito Kawamura, Shin Sekiya, Kei Sasaki, Shinichi Wakamoto
  • Publication number: 20210003131
    Abstract: A scroll compressor in which refrigerant gas is sucked into a hermetic container and is then compressed in a compression chamber. The scroll compressor includes an orbiting scroll including a second end plate having a second surface. The second end plate has an annular groove having an opening that opens into the second surface facing a frame and serving as a back-pressure chamber with the opening being closed by the frame, a gas communication path through which the groove communicates with the compression chamber in which the refrigerant gas is being compressed, and a first oil supply passage having a first opening that opens into at least one of a region inside the groove and a region outside the groove in the second surface and through which the refrigerating machine oil is supplied to a gap between the second surface and the frame.
    Type: Application
    Filed: April 23, 2018
    Publication date: January 7, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Wataru IWATAKE, Shin SEKIYA, Masayuki KAKUDA, Raito KAWAMURA, Kei SASAKI
  • Patent number: 10794428
    Abstract: There are provided a sealing device and a hub bearing that can reduce torque. Pear-skin-like projections and depressions are provided on each of a sliding surface in a lip for foreign object (a side lip 121a and a middle lip 121b) and a sliding surface in a lip for grease 122. Roughness of the pear-skin-like projections and depressions provided on the sliding surface of the lip for grease 122 is larger than roughness of the pear-skin-like projections and depressions provided on the sliding surface of the lip for foreign object.
    Type: Grant
    Filed: November 24, 2017
    Date of Patent: October 6, 2020
    Assignee: NOK CORPORATION
    Inventors: Yuichi Shuto, Kei Sasaki, Shohei Yamane, Yuichi Tarukawa, Takuya Kato
  • Publication number: 20200307945
    Abstract: A fold-enforcing assembly includes a fold-enforcing device, a moving device to move the fold-enforcing device in a direction of a fold of a sheet bundle, and control circuitry. The fold-enforcing device includes a pressing member pair to nip and press the fold of the sheet bundle in a direction of thickness, a pressing mechanism to pressurize and depressurize the pressing member pair, and a driver to drive the pressing mechanism. Controlled by the control circuitry, the moving device moves the fold-enforcing device in accordance with a size of the sheet bundle in the direction of the fold; pressing mechanism pressurizes the pressing member pair to press a first end portion of the sheet bundle in the direction of the fold; the moving device moves the fold-enforcing device to a second end portion of the sheet bundle; and pressing mechanism depressurizes the pressing member pair in the second end portion.
    Type: Application
    Filed: March 5, 2020
    Publication date: October 1, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Yuuta MORI, Kei SASAKI, Junya SUZUKI, Koji FURUTA, Yasuo NIIKURA, Kazuki MISHINA, Kenji HARI, Hisayoshi SUGAWARA, Yuusuke SHIBASAKI
  • Publication number: 20200307944
    Abstract: A binding device includes a stacking device configured to receive sheets, a sheet alignment member configured to align the sheets on the stacking device, a binder configured to bind the sheets on the stacking device, a binder moving device configured to move the binder, and a retreat device configured to retreat the sheet alignment member from a range of movement of the binder. The retreat device retreats the sheet alignment member in response to a pressing force acting on the sheet alignment member in a direction of movement of the binder.
    Type: Application
    Filed: March 6, 2020
    Publication date: October 1, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Yuusuke SHIBASAKI, Kei SASAKI, Junya SUZUKI, Koji FURUTA, Yasuo NIIKURA, Kazuki MISHINA, Kenji HARI, Yuuta MORI, Hisayoshi SUGAWARA
  • Publication number: 20200307936
    Abstract: A sheet stacking apparatus includes an ejector, a stacker, a wall, and an upper surface detector. The ejector ejects a sheet, and the stacker stacks the sheet ejected from the ejector. The wall contacts a trailing end of the sheet ejected from the ejector in an ejection direction to align the sheet. The upper surface detector detects an upper surface on a trailing end side of the sheet stacked on the stacker in the ejection direction. When the sheet moves toward the wall, the upper surface detector moves from a home position in which the upper surface detector detects the upper surface of the sheet to a retracted position in which the upper surface detector does not contact the sheet moving toward the wall.
    Type: Application
    Filed: March 4, 2020
    Publication date: October 1, 2020
    Applicant: Ricoh Company, Ltd
    Inventors: Hisayoshi SUGAWARA, Kei SASAKI, Junya SUZUKI, Koji FURUTA, Yasuo NIIKURA, Kazuki Mishina, Kenji Hari, Yuuta Mori, Yuusuke Shibasaki
  • Publication number: 20200271115
    Abstract: An object is to obtain a scroll compressor that can reduce an outflow of injection refrigerant into an oil sump, reduce degradation of reliability associated with a decrease in viscosity of refrigerating machine oil stored in the oil sump, and reduce degradation of performance caused by compression of dead volume, and thereby achieve high efficiency, and to also obtain a refrigeration cycle apparatus. An injection port opens only to a suction chamber and is provided in a baseplate of a fixed scroll. In all phases of rotation of a rotation shaft, the injection port is located on an inner side of an outer edge of a structure unit that is configured by meshing a spiral body of the fixed scroll and a spiral body of an orbiting scroll with each other.
    Type: Application
    Filed: January 22, 2016
    Publication date: August 27, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Wataru IWATAKE, Raito KAWAMURA, Shin SEKIYA, Kei SASAKI, Shinichi WAKAMOTO
  • Publication number: 20200191145
    Abstract: In a scroll compressor, a first flow passage is formed in a fixed base plate and a frame to supply oil separated by an oil separating mechanism provided in a sealed container to an oil sump at the bottom of the sealed container. In the fixed base plate, a second flow passage is formed to supply the oil separated by the oil separating mechanism into a compression mechanism.
    Type: Application
    Filed: June 6, 2017
    Publication date: June 18, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Wataru IWATAKE, Shin SEKIYA, Raito KAWAMURA, Kei SASAKI
  • Publication number: 20200018311
    Abstract: A first injection port is open to a suction chamber of a plurality of chambers at some rotation phases, and is located within an angular range defined by a line connecting a winding-end contact point of an orbiting scroll at a compression start phase with a base circle center of a fixed scroll and one of two lines tangent to a winding-end point locus of a tip seal at a tooth tip of a spiral body of the orbiting scroll and passing through a base circle center of the orbiting scroll, the one being closer to the winding-end contact point. The first injection port does not interfere with the tip seal at the tooth tip of the spiral body of the orbiting scroll.
    Type: Application
    Filed: October 27, 2016
    Publication date: January 16, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Wataru IWATAKE, Shin SEKIYA, Raito KAWAMURA, Kei SASAKI
  • Publication number: 20190277340
    Abstract: There are provided a sealing device and a hub bearing that can reduce torque. Pear-skin-like projections and depressions are provided on each of a sliding surface in a lip for foreign object (a side lip 121a and a middle lip 121b) and a sliding surface in a lip for grease 122. Roughness of the pear-skin-like projections and depressions provided on the sliding surface of the lip for grease 122 is larger than roughness of the pear-skin-like projections and depressions provided on the sliding surface of the lip for foreign object.
    Type: Application
    Filed: November 24, 2017
    Publication date: September 12, 2019
    Inventors: Yuichi SHUTO, Kei SASAKI, Shohei YAMANE, Yuichi TARUKAWA, Takuya KATO
  • Publication number: 20190271359
    Abstract: A sealing apparatus includes: an annular reinforcement ring around an axis; and an annular elastic body part around the axis, which is attached to the reinforcement ring and is formed of an elastic body. The elastic body part has: a side lip, an intermediate lip, and a grease lip. A grease as a lubricant is applied to respective inner peripheral side surfaces of the side lip, the intermediate lip, and the grease lip. A thickener of the grease includes no urea-based thickener. In a usage state of the sealing apparatus, a cross sectional area of an inter-lip space enclosed by the side lip, the intermediate lip, and a hub ring is equal to or greater than 3.5 mm2.
    Type: Application
    Filed: May 21, 2019
    Publication date: September 5, 2019
    Inventors: Yuichi TARUKAWA, Yuichi SHUTO, Kei SASAKI, Shohei YAMANE, Takuya KATO
  • Patent number: 10293531
    Abstract: The object of the present invention is to effectively prevent the rust generation on a flange portion and to prevent the deformation of the flange portion due to the filling pressure of a molding material in the manufacture of a sealing device whereby a seal main body comprising a rubber-like elastic material and having a portion that covers both surfaces of the flange portion of a metal reinforcing ring is integrally formed on the reinforcing ring by means of a metal mold. To this end, the flange portion of the reinforcing ring is formed in advance with a shape which is distributed unevenly in the direction opposite the direction in which the flange portion is deformed from its original shape by the filling pressure of the molding material.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: May 21, 2019
    Assignee: NOK Corporation
    Inventors: Takuya Kato, Go Kanzaki, Kei Sasaki, Naoto Kobayashi
  • Publication number: 20180156277
    Abstract: The invention provides a sealing device sealing a foreign material in a machine outer side so as to prevent the foreign material from entering into a machine inner side, having an end face lip which slidably comes into contact with an end face portion of a rotation side part, and applying grease for lubrication to an inner peripheral surface of the end face lip. In the sealing device, an application amount of the grease applied to an inner peripheral surface of a leading end portion in the end face lip is set to be smaller than an application amount of the grease applied to an inner peripheral surface of a root portion in the end face lip. Accordingly, grease applied to an inner peripheral surface of an end face lip is hard to be scattered even in the case that a centrifugal force acts on the sealing device.
    Type: Application
    Filed: May 18, 2016
    Publication date: June 7, 2018
    Inventors: Shohei YAMANE, Kei SASAKI, Yuichi SHUTO, Takuya KATO
  • Publication number: 20180080563
    Abstract: A sealing device mounted in a vehicle bearing device, provided with a structure capable of releasing pressure and thus suppressing the internal pressure from increasing, in the event where the internal pressure of the bearing device increases in a sealing device having a seal lip provided toward the inner portion of the bearing device. A protrusion forms a gap between the seal lip and a mating sliding member for adjusting the internal pressure of the bearing device, provided within the range of a sliding portion of the seal lip and on a portion of the circumference of the sliding portion. The protrusion is provided as a protrusion positioned on the tip end portion of the seal lip, a rib-shaped protrusion extending in a shaft direction, and a protrusion with a size that wears out after a predetermined operation time elapses.
    Type: Application
    Filed: September 20, 2017
    Publication date: March 22, 2018
    Inventors: Yuichi SHUTO, Kei SASAKI, Shohei YAMANE, Yuichi TARUKAWA, Takuya KATO
  • Patent number: 9561927
    Abstract: A sheet discharging device includes a shift tray 202 on which a sheet P1 is stacked, a discharging roller 6 that discharges a sheet P2 onto the shift tray 202, a blowing device 230 that sends air to a lower surface of the sheet P2 discharged by the discharging roller 6, a blocking member 231 that blocks air sent to the lower surface of the sheet P2 from a blowing port 230-2 of the blowing device 230, and a control unit that controls the blocking amount of the blocking member 231. The blocking amount is determined based upon sheet information including sheet-type information, sheet-size information, and sheet-thickness information, for example.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: February 7, 2017
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Tomomichi Hoshino, Masahiro Tamura, Shuuya Nagasako, Tomohiro Furuhashi, Keisuke Sugiyama, Kyosuke Nakada, Kazuya Yamamoto, Akira Kunieda, Takahiro Watanabe, Junya Suzuki, Kazunori Konno, Youhei Niitsuma, Takamasa Matsumoto, Kiichiro Goto, Kazuhiko Kitano, Takashi Fukumoto, Yasuo Niikura, Satoru Takano, Hidetoshi Kojima, Kei Sasaki, Yasushi Tsuruoka, Shintaro Matsumoto, Ryo Takahashi, Yuuta Mori, Kohjiroh Haga
  • Publication number: 20160250788
    Abstract: The object of the present invention is to effectively prevent the rust generation on a flange portion and to prevent the deformation of the flange portion due to the filling pressure of a molding material in the manufacture of a sealing device whereby a seal main body comprising a rubber-like elastic material and having a portion that covers both surfaces of the flange portion of a metal reinforcing ring is integrally formed on the reinforcing ring by means of a metal mold. To this end, the flange portion of the reinforcing ring is formed in advance with a shape which is distributed unevenly in the direction opposite the direction in which the flange portion is deformed from its original shape by the filling pressure of the molding material.
    Type: Application
    Filed: June 24, 2014
    Publication date: September 1, 2016
    Inventors: Takuya KATO, Go KANZAKI, Kei SASAKI, Naoto KOBAYASHI
  • Publication number: 20160185552
    Abstract: A sheet discharging device includes a shift tray 202 on which a sheet P1 is stacked, a discharging roller 6 that discharges a sheet P2 onto the shift tray 202, a blowing device 230 that sends air to a lower surface of the sheet P2 discharged by the discharging roller 6, a blocking member 231 that blocks air sent to the lower surface of the sheet P2 from a blowing port 230-2 of the blowing device 230, and a control unit that controls the blocking amount of the blocking member 231. The blocking amount is determined based upon sheet information including sheet-type information, sheet-size information, and sheet-thickness information, for example.
    Type: Application
    Filed: November 25, 2015
    Publication date: June 30, 2016
    Applicant: Ricoh Company, LIMITED
    Inventors: Tomomichi HOSHINO, Masahiro TAMURA, Shuuya NAGASAKO, Tomohiro FURUHASHI, Keisuke SUGIYAMA, Kyosuke NAKADA, Kazuya YAMAMOTO, Akira KUNIEDA, Takahiro WATANABE, Junya SUZUKI, Kazunori KONNO, Youhei NIITSUMA, Takamasa MATSUMOTO, Kiichiro GOTO, Kazuhiko KITANO, Takashi FUKUMOTO, Yasuo NIIKURA, Satoru TAKANO, Hidetoshi KOJIMA, Kei SASAKI, Yasushi TSURUOKA, Shintaro MATSUMOTO, Ryo TAKAHASHI, Yuuta MORI, Kohjiroh HAGA
  • Patent number: 9260264
    Abstract: A sheet discharging device includes a shift tray 202 on which a sheet P1 is stacked, a discharging roller 6 that discharges a sheet P2 onto the shift tray 202, a blowing device 230 that sends air to a lower surface of the sheet P2 discharged by the discharging roller 6, a blocking member 231 that blocks air sent to the lower surface of the sheet P2 from a blowing port 230-2 of the blowing device 230, and a control unit that controls the blocking amount of the blocking member 231. The blocking amount is determined based upon sheet information including sheet-type information, sheet-size information, and sheet-thickness information, for example.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: February 16, 2016
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Tomomichi Hoshino, Masahiro Tamura, Shuuya Nagasako, Tomohiro Furuhashi, Keisuke Sugiyama, Kyosuke Nakada, Kazuya Yamamoto, Akira Kunieda, Takahiro Watanabe, Junya Suzuki, Kazunori Konno, Youhei Niitsuma, Takamasa Matsumoto, Kiichiro Goto, Kazuhiko Kitano, Takashi Fukumoto, Yasuo Niikura, Satoru Takano, Hidetoshi Kojima, Kei Sasaki, Yasushi Tsuruoka, Shintaro Matsumoto, Ryo Takahashi, Yuuta Mori, Kohjiroh Haga