Patents by Inventor Masahiko Morisaki

Masahiko Morisaki 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: 20200119599
    Abstract: A motor includes: a bobbin having an insertion hole; a coil wound around the bobbin; a stator core having an excitation part that is inserted into the insertion hole; a rotor that is disposed rotatably with respect to the stator core; and a resin mold covering the bobbin, the coil, and the stator core. On a first opening end of the insertion hole, an exposed portion having an exposed surface that is exposed from the resin mold is formed. The exposed portion is positioned between the stator core and the resin mold.
    Type: Application
    Filed: July 13, 2018
    Publication date: April 16, 2020
    Inventors: YUICHI TANABE, MASAHIKO MORISAKI, MASATOMO KUMASHIRO, TOSHIFUMI TSUTSUMI
  • Publication number: 20130055771
    Abstract: A brushless motor for washing machine of this invention is a motor suitable for application to a drum-type washing machine. The brushless motor for washing machine comprises a stator and a rotor. The stator includes a mounting section for fixing to a water tub, a stator core, a winding and a winding insulation material. The rotor includes a motor pulley for connection to a belt, a rotatably supported motor shaft, a rotor core and a magnet. At least one of the stator and the rotor has a mold portion formed of a resin material.
    Type: Application
    Filed: July 20, 2011
    Publication date: March 7, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Yuichiro Tashiro, Hideaki Matsuo, Hideharu Hiwaki, Masahiko Morisaki
  • Publication number: 20130042655
    Abstract: A brushless motor for washing machine applicable to a drum-type washing machine is provided with a rotary drum having an axis of rotation in a horizontal direction or an inclined direction, and power is transmitted to the rotary drum via a pulley and a belt. The brushless motor for washing machine comprises a stator and a rotor, and the rotor includes a rotor mold portion formed of a resin material on both end surfaces in an axial direction of a rotor core. The rotor mold portion has a resin protrusion projecting in an annular shape in the axial direction.
    Type: Application
    Filed: July 20, 2011
    Publication date: February 21, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Hideaki Matsuo, Yuichiro Tashiro, Hideharu Hiwaki, Masahiko Morisaki
  • Patent number: 8269380
    Abstract: A brushless motor, to be used in a washing machine, includes a stator, a rotor, a magnetic sensor, and a drive circuit. The magnetic sensor and the drive circuit are accommodated in a case, and sealed with moisture-proof sealing resin, thereby forming a drive circuit unit, which is built in the brushless motor.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: September 18, 2012
    Assignee: Panasonic Corporation
    Inventors: Takanori Amaya, Masahiko Morisaki
  • Patent number: 8049382
    Abstract: A Hall element is placed under an outside rotor at an identical angular position to a centerline between two adjacent outer teeth. This structure allows narrowing a dead band of the Hall element when it senses a leakage magnetic flux.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: November 1, 2011
    Assignee: Panasonic Corporation
    Inventors: Yukinori Nakagawa, Yuichi Yoshikawa, Hu Li, Masahiko Morisaki, Yoshio Kobayashi
  • Publication number: 20100295401
    Abstract: A motor includes a stator which includes: a stator core having an annular stator yoke, a plurality of outer teeth projecting outward from the stator yoke, and a plurality of inner teeth having the same number of teeth as the outer teeth and projecting inward from the stator yoke; and a plurality of windings wound on the stator core, and the motor includes an outer rotor confronting the outer teeth via an air gap and an inner rotor confronting the inner teeth via an air gap. The outer rotor and the inner rotor have holes for accommodating permanent magnets respectively. The permanent magnets having a rectangular shape in sectional views thereof are accommodated in the holes.
    Type: Application
    Filed: January 9, 2007
    Publication date: November 25, 2010
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Yukinori Nakagawa, Yuichi Yoshikawa, Hu Li, Masahiko Morisaki, Hiroshi Murakami
  • Publication number: 20100058817
    Abstract: A drum type washing machine of the present invention is a direct-drive washing machine including a washing-machine casing; a rotating drum with its drum rotation shaft horizontal or inclined; and a motor driving the rotating drum. The motor has a stator including a coil wound in a toroidal winding form and first molding resin; and a twin-type rotor including an outer rotor, an inner rotor, and second molding resin integrally molding them.
    Type: Application
    Filed: April 8, 2008
    Publication date: March 11, 2010
    Applicant: Panasonic Corporation
    Inventors: Yuichi Yoshikawa, Hu Li, Masahiko Morisaki, Hiroshi Murakami, Yuichiro Tashiro, Yoshio Kobayashi, Takeshi Kowa, Yukinori Nakagawa
  • Publication number: 20100019629
    Abstract: A brushless motor, to be used in a washing machine, includes a stator, a rotor, a magnetic sensor, and a drive circuit. The magnetic sensor and the drive circuit are accommodated in a case, and sealed with moisture-proof sealing resin, thereby forming a drive circuit unit, which is built in the brushless motor.
    Type: Application
    Filed: May 30, 2007
    Publication date: January 28, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Takanori Amaya, Masahiko Morisaki
  • Publication number: 20090302719
    Abstract: A Hall element is placed under an outside rotor at an identical angular position to a centerline between two adjacent outer teeth. This structure allows narrowing a dead band of the Hall element when it senses a leakage magnetic flux.
    Type: Application
    Filed: April 25, 2007
    Publication date: December 10, 2009
    Applicant: PANASONIC CORPORATION
    Inventors: Yukinori Nakagawa, Yuichi Yoshikawa, Hu Li, Masahiko Morisaki, Yoshio Kobayashi
  • Patent number: 7626299
    Abstract: A motor includes a stator with an annular stator yoke, a stator core having a plurality of inner and outer teeth projecting from the stator yoke toward inside and outside respectively, a plurality of coils wound on the stator core, and an inner rotor and an outer rotor confronting the inner and outer teeth respectively via an air-gap, and having an permanent magnet respectively. The number of slots “S” and the number of poles “P” establish a relation of S:P=3:2N?1, where N is an integer equal to 1 or more, and a case when 2N?1 becomes a multiple of 3 is excluded.
    Type: Grant
    Filed: April 17, 2007
    Date of Patent: December 1, 2009
    Assignee: Panasonic Corporation
    Inventors: Yuichi Yoshikawa, Hiroshi Murakami, Yukinori Nakagawa, Masahiko Morisaki, Hu Li
  • Patent number: 7619334
    Abstract: This motor has a stator formed by integrally molding a stator core, a stator winding wound around the stator core, and a grounding terminal mounted on the stator winding by insulating resin. The motor has a rotor provided with a shaft, a bracket mounting a bearing for supporting the shaft, and a conductive pin press fit in at least one hole having a predetermined diameter provided in the teeth of the stator core. The pin and the grounding terminal are electrically connected to each other.
    Type: Grant
    Filed: March 29, 2004
    Date of Patent: November 17, 2009
    Assignee: Panasonic Corporation
    Inventors: Yasuo Nanbu, Masahiko Morisaki
  • Publication number: 20090134735
    Abstract: A motor includes a stator which includes a stator core having an annular stator yoke, a plurality of outer teeth projecting outward from the stator yoke and a plurality of inner teeth projecting inward from the stator yoke, and a plurality of windings wound on the stator core. The motor also includes an outer rotor confronting the outer teeth with an air gap therebetween and an inner rotor confronting the inner teeth with an air gap therebetween. This motor thus has twin-rotor. The stator core includes outer slots between each one of the outer teeth as well as inner slots between each one of the inner teeth, and the windings are wound on the stator yoke between the outer slot and the inner slot. A cross sectional cut of the stator reveals that a sectional area of the outer slot is equal to that of the inner slot.
    Type: Application
    Filed: December 21, 2006
    Publication date: May 28, 2009
    Applicant: Matsushita Electric Industrial Co., Ltd
    Inventors: Yuichi Yoshikawa, Atsuyoshi Koshiba, Hu Li, Masahiko Morisaki, Hiroshi Murakami
  • Publication number: 20090072650
    Abstract: A motor includes a stator with an annular stator yoke, a stator core having a plurality of inner and outer teeth projecting from the stator yoke toward inside and outside respectively, a plurality of coils wound on the stator core, and an inner rotor and an outer rotor confronting the inner and outer teeth respectively via an air-gap, and having an permanent magnet respectively. The number of slots “S” and the number of poles “P” establish a relation of S:P=3:2N?1, where N is an integer equal to 1 or more, and a case when 2N?1 becomes a multiple of 3 is excluded.
    Type: Application
    Filed: April 17, 2007
    Publication date: March 19, 2009
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Yuichi Yoshikawa, Hiroshi Murakami, Yukinori Nakagawa, Masahiko Morisaki, Hu Li
  • Patent number: D576942
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: September 16, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yuuichi Yoshikawa, Hiroshi Murakami, Li Hu, Masahiko Morisaki
  • Patent number: D673911
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: January 8, 2013
    Assignee: Panasonic Corporation
    Inventors: Yuichi Tanabe, Masahiko Morisaki, Masatomo Kumashiro
  • Patent number: D680071
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: April 16, 2013
    Assignee: Panasonic Corporation
    Inventors: Yuichi Tanabe, Masahiko Morisaki, Masatomo Kumashiro
  • Patent number: D701300
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: March 18, 2014
    Assignee: Panasonic Corporation
    Inventors: Yuichi Tanabe, Masahiko Morisaki, Michihiro Kurokawa, Yoshio Chiba, Hirokazu Takahara
  • Patent number: D709450
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: July 22, 2014
    Assignee: Panasonic Corporation
    Inventors: Yuichi Tanabe, Masahiko Morisaki, Akihiro Ochiai
  • Patent number: D709451
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: July 22, 2014
    Assignee: Panasonic Corporation
    Inventors: Yuichi Tanabe, Masahiko Morisaki, Akihiro Ochiai
  • Patent number: D853964
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: July 16, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yuichi Tanabe, Masahiko Morisaki, Masatomo Kumashiro, Toshifumi Tsutsumi