Patents by Inventor Nobuyuki Akaishi

Nobuyuki Akaishi 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: 10518547
    Abstract: A liquid discharger includes a head including nozzles to discharge liquid from the nozzles, a detachable first container attached to the liquid discharger to accommodate the liquid, a second container connected to the head to accommodate the liquid to be supplied to the head, a supply channel to connect the first container and the second container, an irreversible pump connected to the second container, and a controller to control the irreversible pump to pressurize and decompress the second container to reciprocally move the liquid between the first detachable container and the second container via the supply channel.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: December 31, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Keitaroh Sakai, Nobuyuki Akaishi, Shigeru Morinaga
  • Patent number: 10124617
    Abstract: A liquid stirrer includes a removable first liquid container to contain a liquid; a second liquid container having a capacity less than that of the first liquid container; a fluid path between the first liquid container and the second liquid container; a reversible pump disposed on the fluid path; a sensor to detect an amount of the liquid inside the second liquid container, in which the liquid reciprocally moves between the first liquid container and the second liquid container; and a controller to control the reversible pump, based on readings from the sensor, such that a moving amount of the liquid does not exceed the capacity of the second liquid container and that the second container does not go empty.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: November 13, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Keitaroh Sakai, Nobuyuki Akaishi
  • Patent number: 9849678
    Abstract: A liquid discharger includes a head to discharge liquid droplets, a cap to cover a nozzle face of the head; a cap mover to move the cap to a capping position at which the cap faces the nozzle face of the head or to move the cap to an evacuation position at which the cap does not face the nozzle face of the head. Further, there is a belt arranged to face and clean the cap at the evacuation position, the belt having a width and length enough to cover whole area of a rim of the cap; a conveyer to drive the belt, and a belt cleaner which faces the belt to clean the belt.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: December 26, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Keitaroh Sakai, Toshitaka Osanai, Nobuyuki Akaishi, Shigeru Morinaga
  • Publication number: 20170341407
    Abstract: A liquid discharger includes a head including nozzles to discharge liquid from the nozzles, a detachable first container attached to the liquid discharger to accommodate the liquid, a second container connected to the head to accommodate the liquid to be supplied to the head, a supply channel to connect the first container and the second container, an irreversible pump connected to the second container, and a controller to control the irreversible pump to pressurize and decompress the second container to reciprocally move the liquid between the first detachable container and the second container via the supply channel.
    Type: Application
    Filed: May 2, 2017
    Publication date: November 30, 2017
    Applicant: RICOH COMPANY, LTD.
    Inventors: Keitaroh SAKAI, Nobuyuki AKAISHI, Shigeru MORINAGA
  • Publication number: 20170100936
    Abstract: A liquid discharger includes a head to discharge liquid droplets, a cap to cover a nozzle face of the head; a cap mover to move the cap to a capping position at which the cap faces the nozzle face of the head or to move the cap to an evacuation position at which the cap does not face the nozzle face of the head. Further, there is a belt arranged to face and clean the cap at the evacuation position, the belt having a width and length enough to cover whole area of a rim of the cap; a conveyer to drive the belt, and a belt cleaner which faces the belt to clean the belt.
    Type: Application
    Filed: September 30, 2016
    Publication date: April 13, 2017
    Inventors: Keitaroh SAKAI, Toshitaka OSANAI, Nobuyuki AKAISHI, Shigeru MORINAGA
  • Publication number: 20150360190
    Abstract: A liquid stirrer includes a removable first liquid container to contain a liquid; a second liquid container having a capacity less than that of the first liquid container; a fluid path between the first liquid container and the second liquid container; a reversible pump disposed on the fluid path; a sensor to detect an amount of the liquid inside the second liquid container, in which the liquid reciprocally moves between the first liquid container and the second liquid container; and a controller to control the reversible pump, based on readings from the sensor, such that a moving amount of the liquid does not exceed the capacity of the second liquid container and that the second container does not go empty.
    Type: Application
    Filed: June 3, 2015
    Publication date: December 17, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Keitaroh Sakai, Nobuyuki Akaishi
  • Patent number: 8863722
    Abstract: A machined shape of a bore is based on the deformation amount of a data-acquisition bore after fastening of cylinder head. A cross section of an approximate shape is set to be an approximately-true circle shape, and a diameter of the approximately-true circle shape is changed along a central axial direction in accordance with the deformation amount of the data-acquisition bore, to determine the approximate shape. The approximate shape has a cross section having the approximately-true circle shape and has a simple shape which is symmetrical about the central axis. Since the machined shape of the bore is the shape obtained by reversing a phase of a recess and a projection of the approximate shape about a predetermined cylindrical shape, the machined shape has a cross section having the approximately-true circle shape and has a simple shape which is symmetrical about the central axis.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: October 21, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Akihiro Osugi, Masao Onishi, Kazushi Sogawa, Nobuyuki Akaishi, Masayuki Takahashi, Minoru Iga, Nozomu Tanaka
  • Patent number: 8857400
    Abstract: In a balancer device (10) including a pair of balancer shafts (11, 21), the radial bearings (41-44) for the balancer shafts are formed solely in the balancer housing (30) and/or an integral extension (52) thereof. Because a pump cover (56) provided separately from the balancer housing does not include a radial bearing for either balancer shaft, the pump cover is not required to be attached to the balancer housing when machining the radial bearing bores in the balancer housing so that the manufacturing process is simplified, and the coaxiality of the bearing halves for each balancer shaft can be ensured without difficulty as opposed to the case where the pump cover is provided with a bearing bore which is required to be aligned with the corresponding bearing bore of the balancer housing.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: October 14, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Nobuyuki Akaishi, Hidehiko Kamiyama
  • Patent number: 8763634
    Abstract: A relief device includes a relief housing constituted by a relief inflow portion, a valve passage portion, a recess, and an oil discharge portion having a relief hole; a relief valve having a small-diameter portion between a first large-diameter portion and a second large-diameter portion; and a spring elastically biasing the relief valve toward the relief inflow portion. The recess is formed at a position that is closer to the relief inflow portion side than to the oil discharge portion, the axial length of the recess is larger than the axial length of the first large-diameter portion of the relief valve, and the shortest axial distance between the recess and the relief hole is less than the axial length of the small-diameter portion.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: July 1, 2014
    Assignees: Honda Motor Co., Ltd., Yamada Manufacturing Co., Ltd.
    Inventors: Nobuyuki Akaishi, Masataka Ikawa, Yasuhiro Ueta, Takuji Ishioka, Hidehiko Kamiyama, Takuya Yamazaki, Yoshiro Umezawa, Hirokazu Inoue, Yoshitaka Kurokawa
  • Publication number: 20140069366
    Abstract: A balancer housing (30) consists of an upper housing (32) and a lower housing (31), and receives a pair of rotatably supported balancer shafts (11, 21) therein. An oil strainer mounting portion (37) is formed as a cylindrical wall extending downward from a bottom wall of the lower housing, and an inlet passage (67) leading to an inlet end of an oil pump (60) extends along a length of the balancer shafts adjacent to the oil strainer mounting portion. A communication passage consisting of a pair of circular holes (66) arranged along an axial line of the inlet passage is passed through a wall separating an interior of the oil strainer mounting portion with the inlet passage. The two holes provides an adequate cross sectional area without increasing the height of the balancer housing.
    Type: Application
    Filed: November 14, 2013
    Publication date: March 13, 2014
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Nobuyuki AKAISHI, Hidehiko Kamiyama
  • Patent number: 8465132
    Abstract: An image forming apparatus is disclosed that includes the pressure adjusting valve including a movable member movably disposed in the pressure adjusting valve, a first throttling part; and a second throttling part, wherein the second throttling part is formed as a gap between an internal wall of the frame of the pressure adjusting valve and the movable member, an internal fluid resistance of the pressure adjusting valve varies in response to the flow rate of the liquid, and when the liquid is discharged from the nozzle, the liquid is fed from the liquid tank to the recording head by the liquid feeding unit in a state where the recording head is in fluid communication with the liquid tank via the pressure adjusting valve.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: June 18, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomomi Katoh, Toshiroh Tokuno, Jun Ichinowatari, Fumitaka Kikkawa, Nobuyuki Akaishi
  • Publication number: 20130139781
    Abstract: A machined shape of a bore is based on the deformation amount of a data-acquisition bore after fastening of cylinder head. A cross section of an approximate shape is set to be an approximately-true circle shape, and a diameter of the approximately-true circle shape is changed along a central axial direction in accordance with the deformation amount of the data-acquisition bore, to determine the approximate shape. The approximate shape has a cross section having the approximately-true circle shape and has a simple shape which is symmetrical about the central axis. Since the machined shape of the bore is the shape obtained by reversing a phase of a recess and a projection of the approximate shape about a predetermined cylindrical shape, the machined shape has a cross section having the approximately-true circle shape and has a simple shape which is symmetrical about the central axis.
    Type: Application
    Filed: May 18, 2011
    Publication date: June 6, 2013
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Akihiro Osugi, Masao Onishi, Kazushi Sogawa, Nobuyuki Akaishi, Masayuki Takahashi, Minoru Iga, Nozomu Tanaka
  • Publication number: 20130014838
    Abstract: A relief device includes a relief housing constituted by a relief inflow portion, a valve passage portion, a recess, and an oil discharge portion having a relief hole; a relief valve having a small-diameter portion between a first large-diameter portion and a second large-diameter portion; and a spring elastically biasing the relief valve toward the relief inflow portion. The recess is formed at a position that is closer to the relief inflow portion side than to the oil discharge portion, the axial length of the recess is larger than the axial length of the first large-diameter portion of the relief valve, and the shortest axial distance between the recess and the relief hole is less than the axial length of the small-diameter portion.
    Type: Application
    Filed: July 10, 2012
    Publication date: January 17, 2013
    Applicants: Yamada Manufacturing Co., Ltd., Honda Motor Co., Ltd.
    Inventors: Nobuyuki AKAISHI, Masataka Ikawa, Yasuhiro Ueta, Takuji Ishioka, Hidehiko Kamiyama, Takuya Yamazaki, Yoshiro Umezawa, Hirokazu Inoue, Yoshitaka Kurokawa
  • Publication number: 20110050816
    Abstract: An image forming apparatus is disclosed that includes the pressure adjusting valve including a movable member movably disposed in the pressure adjusting valve, a first throttling part; and a second throttling part, wherein the second throttling part is formed as a gap between an internal wall of the frame of the pressure adjusting valve and the movable member, an internal fluid resistance of the pressure adjusting valve varies in response to the flow rate of the liquid, and when the liquid is discharged from the nozzle, the liquid is fed from the liquid tank to the recording head by the liquid feeding unit in a state where the recording head is in fluid communication with the liquid tank via the pressure adjusting valve.
    Type: Application
    Filed: August 26, 2010
    Publication date: March 3, 2011
    Applicant: RICOH COMPANY, LTD.
    Inventors: Tomomi KATOH, Toshiroh Tokuno, Jun Ichinowatari, Fumitaka Kikkawa, Nobuyuki Akaishi
  • Patent number: 7690757
    Abstract: A head capping member for capping an ejection face of a liquid ejecting head which face is provided with a nozzle for ejecting a liquid drop is provided, which includes a contact part which contacts the ejection face of the head and is made of an elastic member and a recess which forms a closed space together with the ejection head when the contact part contacts the ejection head, wherein a flat part is formed around the recess and an absorbing member is provided on the flat part so as to cover the recess.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: April 6, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Masanori Kusunoki, Nobuyuki Akaishi, Tetsuya Hiruma
  • Publication number: 20080291240
    Abstract: An image forming apparatus is disclosed. The image forming apparatus executes operations of idle ink ejection in which ink droplets not contributing to forming an image on a recording medium are ejected. When the operations of the idle ink ejection are executed before staring to print an image on a recording medium, the ink droplets are ejected into a cap member; in a case where the operations of the idle ink ejection are executed when a first predetermined period has passed after the last ejection of the ink droplets from the recording head, the ink droplets are ejected into an idle ink droplet receiving section; and in a case where the operations of the idle ink ejection are executed when a second predetermined period longer than the first predetermined period has passed as one of cleaning operations of the recording head, the ink droplets are ejected into the cap member.
    Type: Application
    Filed: May 19, 2008
    Publication date: November 27, 2008
    Applicant: Richo Company, Ltd.
    Inventors: Naoto OHSAKO, Toshitaka Osanai, Tetsuya Hiruma, Nobuyuki Akaishi, Daisuke Nakamura
  • Publication number: 20070206048
    Abstract: A head capping member for capping an ejection face of a liquid ejecting head which face is provided with a nozzle for ejecting a liquid drop is provided, which includes a contact part which contacts the ejection face of the head and is made of an elastic member and a recess which forms a closed space together with the ejection head when the contact part contacts the ejection head, wherein a flat part is formed around the recess and an absorbing member is provided on the flat part so as to cover the recess.
    Type: Application
    Filed: February 21, 2007
    Publication date: September 6, 2007
    Inventors: Masanori Kusunoki, Nobuyuki Akaishi, Tetsuya Hiruma
  • Patent number: 5619782
    Abstract: A method and apparatus for inserting a first member into a hole of a second member includes the steps of (a) inclining either of the first member or the second member relative to the other and offsetting a center of the first member and a center of the hole, (b) moving the first member and the second member toward each other so that the first member and the second member contact each other at one point and are biased against each other, and (c) rotating either the first member or the second member about the contact point in a direction such that the center of the first member and the center of hole approach thereby inserting automatically the first member into the hole.
    Type: Grant
    Filed: December 20, 1994
    Date of Patent: April 15, 1997
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Katsuhisa Tanaka, Akiyoshi Yamashita, Nobuyuki Akaishi