Patents by Inventor Kazushi Ishikawa

Kazushi Ishikawa 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: 20230045464
    Abstract: Provided is a motor including a shaft, a bearing housing in a tubular shape that rotatably supports the shaft with a bearing, a casing that holds an upper end part of an outer peripheral surface of the bearing housing, a stator accommodated in the casing, a rotor, a cover configured to cover an opening formed at a lower end of a tubular part of the casing, and a resin part configured to cover the stator in a space surrounded by the bearing housing, the casing, and the cover. The cover includes a base in an annular shape and a bush disposed radially inside the base and fixed to a lower end part of the outer peripheral surface of the bearing housing.
    Type: Application
    Filed: August 1, 2022
    Publication date: February 9, 2023
    Inventors: Yuta YAMASAKI, Hideki AOI, Nobuaki YASUMOTO, Kazushi ISHIKAWA
  • Patent number: 9531243
    Abstract: A motor includes an attachment portion, a first circuit board, and a second circuit board. The attachment portion is fixed to a frame of an apparatus to be driven by the motor. The first circuit board is located axially below coils and axially above the attachment portion. End portions of conducting wires defining the coils are connected to the first circuit board. The second circuit board is located axially below the attachment portion. An AC to DC conversion portion is mounted on the second circuit board. In addition, the attachment portion is arranged between the first and second circuit boards.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: December 27, 2016
    Assignee: NIDEC CORPORATION
    Inventors: Teppei Sakai, Takahiro Yama, Kazushi Ishikawa
  • Patent number: 9404502
    Abstract: A centrifugal fan device includes an impeller supported to rotate about a center axis extending in an up-down direction; a motor arranged to rotate the impeller; and a housing arranged to surround the impeller. The housing includes an intake portion positioned above the impeller and an exhaust portion positioned radially outward of the impeller. The impeller includes a base extending in a direction orthogonal to the center axis, a ring-shaped shroud positioned above the base and having a diameter which decreases as it goes upward, and a plurality of blades arranged between the base and the shroud. The housing further includes a plurality of ribs protruding from an inner surface of the intake portion toward the shroud.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: August 2, 2016
    Assignee: NIDEC CORPORATION
    Inventor: Kazushi Ishikawa
  • Publication number: 20150130332
    Abstract: A motor includes an attachment portion, a first circuit board, and a second circuit board. The attachment portion is fixed to a frame of an apparatus to be driven by the motor. The first circuit board is located axially below coils and axially above the attachment portion. End portions of conducting wires defining the coils are connected to the first circuit board. The second circuit board is located axially below the attachment portion. An AC to DC conversion portion is mounted on the second circuit board. In addition, the attachment portion is arranged between the first and second circuit boards.
    Type: Application
    Filed: October 1, 2014
    Publication date: May 14, 2015
    Inventors: Teppei SAKAI, Takahiro YAMA, Kazushi ISHIKAWA
  • Patent number: 8033799
    Abstract: A cooling fan unit includes a hook groove locking a plurality of lead wires drawn out of a circuit board and being formed in a wall of a housing in a direction of drawing out the lead wires. The hook groove has a lead wire through path which extends substantially perpendicularly from an end edge of the wall of the housing and a lead wire guide which extends substantially perpendicularly from a bottom of the lead wire through path. At least two of the plurality of lead wires are crossed with each other between the hook groove and a connection portion of the circuit board with respect to the plurality of lead wires, so that at least one second lead wire inhibits displacement of a first lead wire, which is aligned closest to the lead wire through path out of the plurality of lead wires accommodated in the lead wire guide, to a direction of being disengaged from the lead wire through path.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: October 11, 2011
    Assignee: Nidec Corporation
    Inventor: Kazushi Ishikawa
  • Patent number: 7775767
    Abstract: A fan assembly includes a plurality of rotor vanes, a motor rotating the rotor vanes with a center axis J1 as center, a plurality of stator vanes arranged in a passage of air flow generated by rotation of the rotor vanes, and a base portion including a plate-like portion and side circumferential wall. A radially inner end of the stator vane is connected to the side circumferential wall of the base portion, and a side opening is arranged in the side circumferential wall. The air flow generated by rotation of the rotor is guided along the stator vane and taken into the motor to cool of the heat generating source arranged therein.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: August 17, 2010
    Assignee: Nidec Corporation
    Inventors: Shinji Takemoto, Katsuo Tazawa, Kazushi Ishikawa, Akinori Yamamoto
  • Publication number: 20100008800
    Abstract: A cooling fan unit includes a hook groove locking a plurality of lead wires drawn out of a circuit board and being formed in a wall of a housing in a direction of drawing out the lead wires. The hook groove has a lead wire through path which extends substantially perpendicularly from an end edge of the wall of the housing and a lead wire guide which extends substantially perpendicularly from a bottom of the lead wire through path. At least two of the plurality of lead wires are crossed with each other between the hook groove and a connection portion of the circuit board with respect to the plurality of lead wires, so that at least one second lead wire inhibits displacement of a first lead wire, which is aligned closest to the lead wire through path out of the plurality of lead wires accommodated in the lead wire guide, to a direction of being disengaged from the lead wire through path.
    Type: Application
    Filed: July 9, 2008
    Publication date: January 14, 2010
    Applicant: NIDEC CORPORATION
    Inventor: Kazushi ISHIKAWA
  • Publication number: 20070196208
    Abstract: A fan assembly includes a plurality of rotor vanes, a motor rotating the rotor vanes with a center axis J1 as center, a plurality of stator vanes arranged in a passage of air flow generated by rotation of the rotor vanes, and a base portion including a plate-like portion and side circumferential wall. A radially inner end of the stator vane is connected to the side circumferential wall of the base portion, and a side opening is arranged in the side circumferential wall. The air flow generated by rotation of the rotor is guided along the stator vane and taken into the motor to cool of the heat generating source arranged therein.
    Type: Application
    Filed: February 21, 2007
    Publication date: August 23, 2007
    Applicant: NIDEC CORPORATION
    Inventors: Shinji Takemoto, Katsuo Tazawa, Kazushi Ishikawa, Akinori Yamamoto
  • Patent number: 5551707
    Abstract: A composite seal of the type formed of a plurality of layers which provide a suitable fluid or gas seal between two rigid parts. The seal includes a layer of plastic material sandwiched between layers of elastomeric material, wherein the plastic and elastomeric materials are of a type not subject to cross-linkage bonding between the respective materials. The multi-layer seal is formed through use of an adhesive to bond the dissimilar layers to form a permanent multi-layer member.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: September 3, 1996
    Assignee: Freudenberg-NOK General Partnership
    Inventors: Douglas E. Pauley, Gary D. D'Abate, Kazushi Ishikawa, John M. Lopez
  • Patent number: 5072108
    Abstract: A foreign object detecting method and device are for detecting foreign objects mixed in a liquid filling a transparent container. The foreign object detecting method comprises the first step of keeping for a set period of time the transparent container rotated in a first rotational direction, the second step of rotating the transparent container in a second rotational direction opposite to the first rotational direction; the third step of taking a transmitted light image of the transparent container while the liquid in the transparent container is substantially stopped after a set period of time from the start of the rotation of the transparent container in the second rotational direction; and the fourth step of scanning the taken transmitted light image along the rotational directions to detect the foreign objects in the liquid based on a difference in brightness between at least two points on a scanning line.
    Type: Grant
    Filed: September 6, 1990
    Date of Patent: December 10, 1991
    Assignee: Kabushiki Kaisha Kirin Techno System
    Inventor: Kazushi Ishikawa
  • Patent number: 4924083
    Abstract: A method and a device for inspecting the sidewall of a bottle is disclosed. In the method and device for inspecting the sidewall of the bottle, an elongate illumination portion is moved to irradiate illumination light to the sidewall of the bottle to be inspected, an elongate observation portion moved synchronously with the elongate illumination portion to observe the illumination light transmitted through the sidewall of the bottle, and based on an image of the transmitted light, the presence of defects is judged. Light blocking defects and refractional defects on the sidewall of the bottle can be detected with high precision.
    Type: Grant
    Filed: April 12, 1989
    Date of Patent: May 8, 1990
    Assignee: Kirin Beer Kabushiki Kaisha
    Inventors: Kazushi Ishikawa, Shinsaku Yamamoto, Hisao Katogi
  • Patent number: 4758084
    Abstract: An apparatus for detecting defects on a bottle mouth has an annular illuminator, a reflecting mirror for forming a planar image of the bottle mouth, a CCD camera for detecting the planar image and an operation unit for operating electric signals produced by the CCD camera to judge existence of the defects on the bottle mouth. Detecting operation of defects can be carried out instantly without rotating the bottle.
    Type: Grant
    Filed: July 8, 1986
    Date of Patent: July 19, 1988
    Assignee: Kirin Beer Kabushiki Kaisha
    Inventors: Akira Tokumi, Hiroyuki Fukuchi, Kazushi Ishikawa