Patents by Inventor Gunichi Nakamura

Gunichi Nakamura 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: 7965074
    Abstract: Disclosed herein is a position sensor including, a magnetic recording medium including two incremental layers and an absolute layer, the absolute layer provided between the incremental layers, each of the layers having magnetic information recorded therein, and a magnetic detection section including three magnetoresistance effect devices opposite to the layers of the magnetic recording medium, being moved relative to the magnetic recording medium in the extending direction of the layers, and being operative to detect the magnetic information in the layers by the magnetoresistance effect devices.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: June 21, 2011
    Assignee: Mori Seiki Co., Ltd.
    Inventors: Nobuhiro Nakagawa, Gunichi Nakamura, Masaaki Kusumi
  • Publication number: 20090116151
    Abstract: Disclosed herein is a position sensor including, a magnetic recording medium including two incremental layers and an absolute layer, the absolute layer provided between the incremental layers, each of the layers having magnetic information recorded therein, and a magnetic detection section including three magnetoresistance effect devices opposite to the layers of the magnetic recording medium, being moved relative to the magnetic recording medium in the extending direction of the layers, and being operative to detect the magnetic information in the layers by the magnetoresistance effect devices.
    Type: Application
    Filed: October 21, 2008
    Publication date: May 7, 2009
    Applicant: SONY CORPORATION
    Inventors: Nobuhiro Nakagawa, Gunichi Nakamura, Masaaki Kusumi
  • Patent number: 6935043
    Abstract: In a scale device including a case member (8) having a guide opening (9) formed therein, seal lip members (12A, 12B), a carrier unit (13) having seal lip pressing means (22, 23) formed thereon, and a coupling member (16) which slides inside and relative to the guide opening (9), the seal lip members (12A, 12B) are pressed at end portions (12e, 12f) thereof by the seal lip pressing means (22, 23) in the vicinity of opposite end portions (16b, 16c) of the coupling member (16) to prevent the seal lip members (12A, 12B) from being spread. Thus, any gaps can be prevented from taking place between the seal lip members (12A, 12B) and coupling member (16) in the vicinity of the opposite end portions (12e, 12f) of the latter. Therefore, dust or the like can be prevented from entering the case member (8).
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: August 30, 2005
    Assignee: Sony Precision Technology Inc.
    Inventors: Gunichi Nakamura, Mitsuru Ohno
  • Patent number: 6931741
    Abstract: In a scale device including a scale unit (4) and detector (5), the scale unit (4) includes a scale member (6) formed from a long material and having at least a pair of fixing holes (12) formed therein across a position signal carrying area (11) defined thereon and which carries position signals, and a case member (7) housing the scale member (6) therein and having formed therein a pair of fixing holes (15) through which there is inserted a fastening member (13) to be screwed into a mounting hole (10) formed in a stationary part (2) of a machine to which the scale device is to be installed. The detector (5) is fixed to a moving part (3) of the machine, which moves relative to the stationary part (2), and includes a sensor (29) which moves oppositely to the position signal carrying area (11) on the scale member (6). The scale unit (4) is fixed to the stationary part (2) with the scale member (6) and case member (7) being fastened together by the fastening member (13).
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: August 23, 2005
    Assignee: Sony Precision Technology Inc.
    Inventors: Gunichi Nakamura, Mitsuru Ohno
  • Publication number: 20040154181
    Abstract: In a scale device including a scale unit (4) and detector (5), the scale unit (4) includes a scale member (6) formed from a long material and having at least a pair of fixing holes (12) formed therein across a position signal carrying area (11) defined thereon and which carries positions signals, and a case member (7) housing the scale member (6) therein and having formed therein a pair of fixing holes (15) through which there is penetrated a fastening member (13) to be screwed into a mounting hole (10) formed in a stationary part (2) of a machine to which the scale device is to be installed. The detector (5) is fixed to a moving part (3) of the machine, which moves relative to the stationary part (2), and includes a sensor (29) which moves oppositely to the position signal carrying area (11) on the scale member (6). The scale unit (4) is fixed to the stationary part (2) with the scale member (6) and case member (7) being fastened together by the fastening member (13).
    Type: Application
    Filed: September 30, 2003
    Publication date: August 12, 2004
    Applicant: Sony Precision Technology Inc.
    Inventors: Gunichi Nakamura, Mitsuru Ohno
  • Publication number: 20040065486
    Abstract: In a scale device including a case member (8) having a guide opening (9) formed therein, seal lip members (12A, 12B), a carrier unit (13) having seal lip pressing means (22, 23) formed thereon, and a coupling member (16) which slides inside and relative to the guide opening (9), the seal lip members (12A, 12B) are pressed at end portions (12e, 12f) thereof by the seal lip pressing means (22, 23) in the vicinity of opposite end portions (16b, 16c) of the coupling member (16) to prevent the seal lip members (12A, 12B) from being spread. Thus, any gaps can be prevented from taking place between the seal lip members (12A, 12B) and coupling member (16) in the vicinity of the opposite end portions (12e, 12f) of the latter. Therefore, dust or the like can be prevented from entering the case member (8).
    Type: Application
    Filed: September 29, 2003
    Publication date: April 8, 2004
    Applicant: Sony Precision Technology Inc.
    Inventors: Gunichi Nakamura, Mitsuru Ohno