Patents by Inventor Ken Asakura

Ken Asakura 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).

  • Publication number: 20230049821
    Abstract: The present invention includes: a cell holding body that holds a measurement cell housing a measurement sample and a dispersion medium; a cover attached to the cell holding body so as to cover the measurement cell; a rotation section that rotates the cell holding body and applies centrifugal force to the measurement cell; a light source that is provided on one side of a rotation passage region of the measurement cell and irradiates the cell with light; a photodetector that is provided on another side of the rotation passage region of the measurement cell and detects light transmitted through the cell; and a particle diameter distribution arithmetic section that acquires a light intensity signal from the photodetector and calculates a particle diameter distribution. The rotation passage region of the cover is located inside an optical path of light passing between the light source and the photodetector.
    Type: Application
    Filed: December 4, 2020
    Publication date: February 16, 2023
    Inventors: Tetsuji YAMAGUCHI, Yuki SHIMIZU, Ken ASAKURA
  • Publication number: 20220184639
    Abstract: In a cell washing centrifuge for washing living cells such as blood cells, control of the remaining amount of a supernatant according to the related art greatly depends on controlling the rotation speed of a motor, and thus a highly accurate motor control part is required to prevent overshooting or the like. In place of the related art, an easy control method is required.
    Type: Application
    Filed: April 24, 2020
    Publication date: June 16, 2022
    Applicant: Eppendorf Himac Technologies Co., Ltd.
    Inventors: Masayuki Shiina, Hidetaka Osawa, Ken Asakura, Hiroshi Hayasaka
  • Publication number: 20220011213
    Abstract: A particle size distribution measurement device includes a cell holding body 31 that holds a measurement cell 2 containing a measurement sample and a dispersion medium and a reference cell 6 containing a reference sample and is rotated by a motor 322, and a cell discrimination mechanism 7 that discriminates the cells 2, 6 passing through a predetermined rotation position by using a magnetic force or electrostatic capacitance.
    Type: Application
    Filed: October 29, 2019
    Publication date: January 13, 2022
    Inventors: Tetsuji YAMAGUCHI, Hitoshi WATANABE, Hidetaka OSAWA, Ken ASAKURA, Kenichi NEMOTO
  • Patent number: 9648763
    Abstract: An electronic appliance unit (10), which is installed at an incline, includes: a case (12) provided with an opening (14) that permits access to the interior of the case; and a terminal block (20) that faces the opening. The terminal block (20) has a terminal block-side fall restraint portion (24) that extends upward from the lower side of the opening in a direction of the inclination to restrain foreign objects (50) from falling from the terminal block.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: May 9, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Ken Asakura
  • Patent number: 9072189
    Abstract: A substrate unit includes a conductive case, an insulating case arranged in the conductive case, a first screw member having conductivity, arranged in the conductive case and fixing the insulating case to an inner wall surface of the conductive case, a circuit substrate provided opposite to the inner wall surface with respect to the insulating case and fixed to the insulating case, and a second screw member having conductivity and fixing the circuit substrate to the insulating case. The first screw member and the second screw member are screwed in toward the inner wall surface. The first screw member and the second screw member are spaced from each other. The first screw member and the second screw member are connected to each other with a connecting member having conductivity.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: June 30, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hajime Kosugi, Ken Asakura
  • Patent number: 8875825
    Abstract: A power control unit that controls a rotary electric machine that drives a vehicle, and that is mounted onto a motor case in which the rotary electric machine is housed, includes a fixed base that is made of resin; a cooler that is arranged on the fixed base and that includes a power module; and a control substrate that is arranged on the cooler. The fixed base inhibits conduction of heat from the motor case to the power control unit.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: November 4, 2014
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin AW Co., Ltd.
    Inventors: Ken Asakura, Yutaka Hotta, Tatsuyuki Uechi
  • Patent number: 8789578
    Abstract: A cooling structure for an electric device includes a plurality of cooling medium paths (724) through which a cooling medium for an inverter flows, an inlet (722) into which the cooling medium to be supplied to the plurality of cooling medium paths (724) flows, and a wall (726) provided between the inlet (722) and the plurality of cooling medium paths (724) to promote distribution of the cooling medium to each of the cooling medium paths (724).
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: July 29, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Ken Asakura
  • Publication number: 20140084719
    Abstract: A power control unit that controls a rotary electric machine that drives a vehicle, and that is mounted onto a motor case in which the rotary electric machine is housed, includes a fixed base that is made of resin; a cooler that is arranged on the fixed base and that includes a power module; and a control substrate that is arranged on the cooler. The fixed base inhibits conduction of heat from the motor case to the power control unit.
    Type: Application
    Filed: February 8, 2012
    Publication date: March 27, 2014
    Applicants: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ken Asakura, Yutaka Hotta, Tatsuyuki Uechi
  • Publication number: 20130316889
    Abstract: A sample container includes a body part which can accommodate a sample and a cap part that can be mounted on the non-circular body part. On the cap part, a neck support member is set for filling a space between an outer lid and a holding hole of a rotor body. The neck support member is configured to be able to be attached to and removed from the outer lid and to be able to relatively rotate with respect to the outer lid. By mounting the outer lid on the body part, the neck support member can also be mounted at the same time. The neck support member is arranged so as to be interposed between the outer lid and shoulder parts of the body part in an axial direction. The neck support member has a lower surface formed so as to correspond to the shape of the shoulder parts.
    Type: Application
    Filed: May 23, 2013
    Publication date: November 28, 2013
    Applicant: HITACHI KOKI CO., LTD.
    Inventors: Ken ASAKURA, Kenichi NEMOTO, Yoshimitsu KITAZAWA
  • Publication number: 20130308257
    Abstract: A substrate unit includes a conductive case, an insulating case arranged in the conductive case, a first screw member having conductivity, arranged in the conductive case and fixing the insulating case to an inner wall surface of the conductive case, a circuit substrate provided opposite to the inner wall surface with respect to the insulating case and fixed to the insulating case, and a second screw member having conductivity and fixing the circuit substrate to the insulating case. The first screw member and the second screw member are screwed in toward the inner wall surface. The first screw member and the second screw member are spaced from each other. The first screw member and the second screw member are connected to each other with a connecting member having conductivity.
    Type: Application
    Filed: March 16, 2011
    Publication date: November 21, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hajime Kosugi, Ken Asakura
  • Patent number: 8561676
    Abstract: A cooler (20) arranged in a PCU (12) is provided with a bottom plate (22), a top plate (28) and a shell (30) arranged between the bottom plate and the top plate. The shell (30) is provided with an inflow side pipe (32) and an outflow side pipe (34) for making a cooling medium flow inside. The bottom plate (22) is provided with fixing holes (36, 38) for fixing the cooler (20) at a suitable position in the PCU (12). Between the fixing hole (38) and the outflow side pipe (34), a notched section (42) is arranged on the bottom plate (22) to partially reduce rigidity so that the shell (30) does not break when an impulsive power is applied to the cooler (20). A notched section (40) may be arranged between the part where the fixing hole (36) is arranged and the inflow side pipe (32).
    Type: Grant
    Filed: August 6, 2008
    Date of Patent: October 22, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Ken Asakura
  • Publication number: 20130264866
    Abstract: An electronic appliance unit (10), which is installed at an incline, includes: a case (12) provided with an opening (14) that permits access to the interior of the case; and a terminal block (20) that faces the opening. The terminal block (20) has a terminal block-side fall restraint portion (24) that extends upward from the lower side of the opening in a direction of the inclination to restrain foreign objects (50) from falling from the terminal block.
    Type: Application
    Filed: October 13, 2011
    Publication date: October 10, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Ken Asakura
  • Patent number: 8461954
    Abstract: A reactor-securing structure includes, one end of a first-side stay and one end of a second-side stay that are connected to portions of a reactor which are separated from each other at the two sides of a coil axial direction. The other end of the first-side stay and the other end of the second-side stay are fastened in states overlapping the inverter case. A first-side overlapping portion is formed by having the other end of the first-side stay overlap the inverter case, and a second-side overlapping portion is formed by having the other end of the second-side stay overlap the inverter case. A portion of the first-side overlapping portion and a portion of the second-side overlapping portion, when seen from a plan view, are provided in the same range relating to the length direction of the I-shaped section forming the reactor.
    Type: Grant
    Filed: November 26, 2009
    Date of Patent: June 11, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Ken Asakura
  • Patent number: 8297999
    Abstract: A connector structure of electrical equipment is for electrically connecting a PCU with a wire, including a waterproof cover having a projection formed at a position adjacent to a recess, a connector provided on a bottom surface of the recess and electrically connected to a control board provided in a casing, and a connector to be fitted to connector from outside of the casing. Connector is formed to include a fitting member to be fitted in connector, and a turn lever, pivotally supported to be rotatable about the fitting member and having a projection to be aligned with the projection when the fitting member is correctly fit in the connector.
    Type: Grant
    Filed: June 4, 2008
    Date of Patent: October 30, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Ken Asakura, Shuichi Iwata
  • Publication number: 20120223794
    Abstract: A reactor-securing structure includes, one end of a first-side stay and one end of a second-side stay that are connected to portions of a reactor which are separated from each other at the two sides of a coil axial direction. The other end of the first-side stay and the other end of the second-side stay are fastened in states overlapping the inverter case. A first-side overlapping portion is formed by having the other end of the first-side stay overlap the inverter case, and a second-side overlapping portion is formed by having the other end of the second-side stay overlap the inverter case, A portion of the first-side overlapping portion and a portion of the second-side overlapping portion, when seen from a plan view, are provided in the same range relating to the length direction of the I-shaped section forming the reactor.
    Type: Application
    Filed: November 26, 2009
    Publication date: September 6, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Ken Asakura
  • Patent number: 8066518
    Abstract: A waterproof connector is mounted on a circuit board fixed within an enclosure. The waterproof connector is connectable with a mating connector through a connector passageway formed in the enclosure. The waterproof connector includes a contact electrically connectable with the mating connector, an insulating housing holding the contact, a first seal disposed on a circumference of the housing, and a faceplate into which the insulating housing is inserted. The having a cylindrical section and a brim section. The cylindrical section includes a first and second open end with the brim section formed at the first open end and spreading outwards. A second seal is interposed between the first open end and the insulating housing.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: November 29, 2011
    Assignees: Toyota Jidosha Kabushiki Kaisha, Tyco Electronics Japan G.K.
    Inventors: Hidetaka Homme, Ken Asakura, Shuichi Iwata
  • Publication number: 20100206517
    Abstract: A cooler (20) arranged in a PCU (12) is provided with a bottom plate (22), a top plate (28) and a shell (30) arranged between the bottom plate and the top plate. The shell (30) is provided with an inflow side pipe (32) and an outflow side pipe (34) for making a cooling medium flow inside. The bottom plate (22) is provided with fixing holes (36, 38) for fixing the cooler (20) at a suitable position in the PCU (12). Between the fixing hole (38) and the outflow side pipe (34), a notched section (42) is arranged on the bottom plate (22) to partially reduce rigidity so that the shell (30) does not break when an impulsive power is applied to the cooler (20). A notched section (40) may be arranged between the part where the fixing hole (36) is arranged and the inflow side pipe (32).
    Type: Application
    Filed: August 6, 2008
    Publication date: August 19, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Ken Asakura
  • Publication number: 20100184322
    Abstract: A connector structure of electrical equipment is for electrically connecting a PCU with a wire, including a waterproof cover having a projection formed at a position adjacent to a recess, a connector provided on a bottom surface of the recess and electrically connected to a control board provided in a casing, and a connector to be fitted to connector from outside of the casing. Connector is formed to include a fitting member to be fitted in connector, and a turn lever, pivotally supported to be rotatable about the fitting member and having a projection to be aligned with the projection when the fitting member is correctly fit in the connector.
    Type: Application
    Filed: June 4, 2008
    Publication date: July 22, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ken Asakura, Shuichi Iwata
  • Publication number: 20100099279
    Abstract: A waterproof connector is mounted on a circuit board fixed within an enclosure. The waterproof connector is connectable with a mating connector through a connector passageway formed in the enclosure. The waterproof connector includes a contact electrically connectable with the mating connector, an insulating housing holding the contact, a first seal disposed on a circumference of the housing, and a faceplate into which the insulating housing is inserted. The having a cylindrical section and a brim section. The cylindrical section includes a first and second open end with the brim section formed at the first open end and spreading outwards. A second seal is interposed between the first open end and the insulating housing.
    Type: Application
    Filed: December 22, 2009
    Publication date: April 22, 2010
    Inventors: Hidetaka Homme, Ken Asakura, Shuichi Iwata
  • Publication number: 20090114371
    Abstract: A cooling structure for an electric device includes an inverter, a plurality of cooling medium paths (724) through which a cooling medium for the inverter flows, and an inlet (722) into which the cooling medium to be supplied to the plurality of cooling medium paths (724) flows. The plurality of cooling medium paths (724) extend in a direction crossing the aligning direction of the inlet (722) and the plurality of cooling medium paths (724). The cooling structure for an electric device further includes a cooling medium distribution mechanism for promoting distribution of the cooling medium to each of cooling medium paths (724) by suppressing the flow of the cooling medium. The cooling medium distribution mechanism has a flow rate suppression function suppressing the flow rate of the cooling medium flowing through at least one cooling medium path (724). This flow rate suppression function is realized by a wall (726A, 726B, 726C) provided at a cooling medium path (724).
    Type: Application
    Filed: October 26, 2006
    Publication date: May 7, 2009
    Applicant: Toyota Jidosha kabushiki Kaisha
    Inventor: Ken Asakura