Patents by Inventor Hirofumi Koizumi

Hirofumi Koizumi 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: 9616847
    Abstract: An ON/OFF detecting buckle switch includes: a case in a housing shape; a substrate fixing member equipped in an inner side face of the case; a slider insertion port equipped in an upper face of the case; a support portion equipped in an inner side face of the case; a first fixed terminal folded stepwise in a longitudinal direction of a strip shape to circumvent the substrate fixing member, having one end provided with a notched portion and the other end fixed to the inner side face of the case; a first movable terminal in a strip shape having one area fixed to the support portion; a slider provided with a terminal press portion that projects inside the case penetrating through the slider insertion port and the notched portion, and when pressed down, presses down an end of the first movable terminal; and a spring that biases the slider upward.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: April 11, 2017
    Assignee: HOSIDEN CORPORATION
    Inventors: Kenjiro Desaki, Hirofumi Koizumi, Takashi Ishibashi
  • Patent number: 9266499
    Abstract: An ON/OFF detecting buckle switch includes: a case in a housing shape; a slider insertion port equipped in an upper face of the case; a support portion equipped in an inner side face of the case; a fixed terminal provided with a notched portion in one end in a strip shape and the other end fixed to the inner side face of the case; a movable terminal in a strip shape having one area fixed to the support portion; a slider provided with a terminal press portion that projects inside the case penetrating through the slider insertion port of the case and the notched portion of the fixed terminal, and when pressed down, presses down an end of the movable terminal; a spring that biases the slider upward; and bent portions in a hook shape in the notched portion of the fixed terminal and an end of the movable terminal.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: February 23, 2016
    Assignee: HOSIDEN CORPORATION
    Inventors: Kenjiro Desaki, Hirofumi Koizumi, Takashi Ishibashi
  • Publication number: 20150217723
    Abstract: An ON/OFF detecting buckle switch includes: a case in a housing shape; a substrate fixing member equipped in an inner side face of the case; a slider insertion port equipped in an upper face of the case; a support portion equipped in an inner side face of the case; a first fixed terminal folded stepwise in a longitudinal direction of a strip shape to circumvent the substrate fixing member, having one end provided with a notched portion and the other end fixed to the inner side face of the case; a first movable terminal in a strip shape having one area fixed to the support portion; a slider provided with a terminal press portion that projects inside the case penetrating through the slider insertion port and the notched portion, and when pressed down, presses down an end of the first movable terminal; and a spring that biases the slider upward.
    Type: Application
    Filed: July 22, 2013
    Publication date: August 6, 2015
    Applicant: HOSIDEN CORPORATION
    Inventors: Kenjiro Desaki, Hirofumi Koizumi, Takashi Ishibashi
  • Patent number: 8952279
    Abstract: A slide switch is provided that is more excellent in reliability than conventional techniques. A slide switch senses an extracted state and an inserted and engaged state of an object. The slide switch includes a body, a slider, a terminal, and an armature. The slider is slidably held in the body and is pushed by insertion of the object to slidingly move. The terminal is provided with a fixed contact point disposed on a surface, facing the slider, of the body along a sliding movement direction. The armature is attached to the slider and is provided with a moving contact point that slides on a fixed contact point disposition surface of the body in association with sliding movement of the slider. In the entire range of the sliding movement, the body and the slider cover all around the fixed contact point and the armature.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: February 10, 2015
    Assignee: Hosiden Corporation
    Inventors: Satoshi Yamanaka, Kenjiro Desaki, Hirofumi Koizumi
  • Patent number: 8952283
    Abstract: The slide switch includes a body, a slider, a terminal, and an armature. The slider is slidably held in the body and is pushed by insertion of the object to slidingly move. The terminal is provided with a fixed contact point disposed on a surface, facing the slider, of the body along a sliding movement direction. The armature is attached to the slider and is provided with a moving contact point that slides on a fixed contact point disposition surface of the body in association with sliding movement of the slider. The slider is provided with an engagement part to receive an action of a moving part that moves in the sliding movement direction in association with extraction and insertion of the object, and the engagement part is in shape of generating a free running distance in which the slider does not act even when the moving part acts.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: February 10, 2015
    Assignee: Hosiden Corporation
    Inventors: Satoshi Yamanaka, Kenjiro Desaki, Hirofumi Koizumi
  • Patent number: 8921723
    Abstract: A slider is slidably held in a body and is pushed by insertion of an object to slidingly move. Terminals are provided with fixed contact points disposed on a surface, facing the slider, of the body along a sliding movement direction. The armature is attached to the slider and is provided with moving contact points that slide on a fixed contact point disposition surface of the body in association with sliding movement of the slider. The slider has an armature mounting surface with a side wall protrudingly formed in one end in the sliding movement direction. The body has a facing surface facing an end surface of the side wall in an entire range of sliding movement. At least any one of an end in the sliding movement direction of the end surface of the side wall and an end in the sliding movement direction of the facing surfaces of the body has a foreign substance elimination groove formed therein.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: December 30, 2014
    Assignee: Hosiden Corporation
    Inventors: Satoshi Yamanaka, Kenjiro Desaki, Hirofumi Koizumi
  • Publication number: 20140262706
    Abstract: An ON/OFF detecting buckle switch includes: a case in a housing shape; a slider insertion port equipped in an upper face of the case; a support portion equipped in an inner side face of the case; a fixed terminal provided with a notched portion in one end in a strip shape and the other end fixed to the inner side face of the case; a movable terminal in a strip shape having one area fixed to the support portion; a slider provided with a terminal press portion that projects inside the case penetrating through the slider insertion port of the case and the notched portion of the fixed terminal, and when pressed down, presses down an end of the movable terminal; a spring that biases the slider upward; and bent portions in a hook shape in the notched portion of the fixed terminal and an end of the movable terminal.
    Type: Application
    Filed: August 23, 2013
    Publication date: September 18, 2014
    Inventors: Kenjiro Desaki, Hirofumi Koizumi, Takashi Ishibashi
  • Patent number: 8362382
    Abstract: A push-button switch having a case which defines a space within which a star wheel is mounted and an indenter which is pressed against an outer periphery of the star wheel. The star wheel has ridge portions. A push button is provided which is mounted on the case for effecting rotation of the star wheel. A contact is also provided which engages the star wheel for corotation and which serves as a movable contact. Also provided are terminals which serve as stationary contacts. The star wheel includes a small projection having a rounded tip end disposed in each ridge portion of the star wheel.
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: January 29, 2013
    Assignee: Hosiden Corporation
    Inventors: Hirofumi Koizumi, Satoshi Yamanaka
  • Patent number: 8327512
    Abstract: A slide switch installed in a buckle apparatus includes a body 20, a slider 30 held slidably in the body 20, the slider 30 sliding when pressed by a movable part of the buckle apparatus, fixed contacts 41 to 43 placed in a direction in which the slider slides, on a surface of the body 20 that faces the slider 30, a movable piece 44 sliding on the surface of the body 20 on which the fixed contacts 41 to 43 are placed. The slider 30 has a size that obscures the fixed contacts 41 to 43 in the entire range in which the slider 30 slides. The fixed contacts 41 to 43 are unlikely to be affected by foreign matter etc. and adherence of foreign matter that degrades performance can be prevented.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: December 11, 2012
    Assignee: Hosiden Corporation
    Inventors: Satoshi Yamanaka, Hirofumi Koizumi
  • Publication number: 20110067209
    Abstract: A slide switch installed in a buckle apparatus includes a body 20, a slider 30 held slidably in the body 20, the slider 30 sliding when pressed by a movable part of the buckle apparatus, fixed contacts 41 to 43 placed in a direction in which the slider slides, on a surface of the body 20 that faces the slider 30, a movable piece 44 sliding on the surface of the body 20 on which the fixed contacts 41 to 43 are placed. The slider 30 has a size that obscures the fixed contacts 41 to 43 in the entire range in which the slider 30 slides. The fixed contacts 41 to 43 are unlikely to be affected by foreign matter etc. and adherence of foreign matter that degrades performance can be prevented.
    Type: Application
    Filed: September 8, 2010
    Publication date: March 24, 2011
    Applicant: Hosiden Corporation
    Inventors: Satoshi Yamanaka, Hirofumi Koizumi
  • Publication number: 20090229958
    Abstract: The invention provides a push-button switch including: a star wheel (15) which is rotated by a constant angular step in one direction by a depression of a push button (4) that automatically returns; an indenter (7) which is pressed against the outer periphery of the star wheel (15) by a spring (8); a contact (9) which is attached so as to corotate with the star wheel (15), and which serves as a movable contact; and terminals (10, 11, 12) with which the contact (9) is contacted in accordance with a rotation angle, and which serve as stationary contacts. A small projection (16) having a rounded tip end is disposed in each of ridge portions (15a) of the star wheel (15). Even when the slope of each ridge portion (15a) does not have a large inclination angle, the star wheel (15) is prevented from being stopped at a position where the ridge portion (15a) is opposed to the indenter (7).
    Type: Application
    Filed: March 10, 2009
    Publication date: September 17, 2009
    Applicant: Hosiden Corporation
    Inventors: Hirofumi Koizumi, Satoshi Yamanaka
  • Patent number: 7498527
    Abstract: The compound operation input device of the invention includes a case; a flexible substrate mounted on a bottom plate section of the case a first operation body moving operable in a direction orthogonal to the flexible substrate a second operation body tilting operable and rotating operable, the second operation body being an annular member arranged at the periphery of the first operation body; a first switching means operated by the movement of the first operation body; a plurality of second switching means operated by the tilt of the second operation body; and a rotary switch that detects the rotating direction and the rotating amount of the second operation body. The first and second switching means and the slid contacting point pattern of the rotary switch are arranged on the same surface of the flexible substrate.
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: March 3, 2009
    Assignee: Hosiden Corporation
    Inventors: Hirofumi Koizumi, Satoshi Yamanaka
  • Publication number: 20080041709
    Abstract: The compound operation input device of the invention includes a case; a flexible substrate mounted on a bottom plate section of the case a first operation body moving operable in a direction orthogonal to the flexible substrate a second operation body tilting operable and rotating operable, the second operation body being an annular member arranged at the periphery of the first operation body; a first switching means operated by the movement of the first operation body; a plurality of second switching means operated by the tilt of the second operation body; and a rotary switch that detects the rotating direction and the rotating amount of the second operation body. The first and second switching means and the slid contacting point pattern of the rotary switch are arranged on the same surface of the flexible substrate.
    Type: Application
    Filed: June 4, 2007
    Publication date: February 21, 2008
    Applicant: HOSIDEN CORPORATION
    Inventors: Hirofumi Koizumi, Satoshi Yamanaka
  • Patent number: 6951991
    Abstract: The invention provides a movable contact for a two-step push-on switch which can realize an excellent sense and a long life period while decreasing the width, even on a flat stationary-contact forming surface of a printed circuit board, a flexible printed circuit board or the like, and also a two-step push-on switch. A movable contact has: a rectangular annular peripheral plate portion 2; an oval center plate portion 3 which is upward inflatingly curved; and a pair of connecting plate portions 4, 4 which connect an inner edge of the peripheral plate portion 2 to an outer edge of said center plate portion 3 on a center line X which is parallel to long side portions 2a, 2a of said peripheral plate portion 2. The movable contact is disposed on a flat stationary-contact forming surface of a printed circuit board, a flexible printed circuit board, or the like, and an adhesive tape 9 for fixing the movable contact is bonded from a side of the upper face, thereby configuring a push-on switch.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: October 4, 2005
    Assignee: Hosident Corporation
    Inventors: Makoto Asada, Hirofumi Koizumi
  • Publication number: 20050082156
    Abstract: The invention provides a movable contact for a two-step push-on switch which can realize an excellent sense and a long life period while decreasing the width, even on a flat stationary-contact forming surface of a printed circuit board, a flexible printed circuit board or the like, and also a two-step push-on switch. A movable contact has: a rectangular annular peripheral plate portion 2; an oval center plate portion 3 which is upward inflatingly curved; and a pair of connecting plate portions 4, 4 which connect an inner edge of the peripheral plate portion 2 to an outer edge of said center plate portion 3 on a center line X which is parallel to long side portions 2a, 2a of said peripheral plate portion 2. The movable contact is disposed on a flat stationary-contact forming surface of a printed circuit board, a flexible printed circuit board, or the like, and an adhesive tape 9 for fixing the movable contact is bonded from a side of the upper face, thereby configuring a push-on switch.
    Type: Application
    Filed: September 30, 2004
    Publication date: April 21, 2005
    Applicant: Hosiden Corporation
    Inventors: Makoto Asada, Hirofumi Koizumi
  • Patent number: 6381815
    Abstract: A buckle is provided with a non-contact buckle switch improved in durability to be securely operated. The non-contact buckle switch is switched by detecting a movement of one of an ejector, latch member and lock member of the buckle. The buckle switch includes a magnet and a Hall element for generating an electromotive force by a magnetic field of the magnet. One of the magnet and the Hall element is attached to a fixed member, and the other of the magnet and the Hall element is attached to one of the ejector, latch member and lock member.
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: May 7, 2002
    Assignees: Takata Corporation, Hosiden Corporation
    Inventors: Yutaka Yamaguchi, Akihiro Shiota, Yoshihiko Kawai, Tadayuki Asako, Takaaki Kimura, Hirofumi Koizumi