Patents by Inventor Shinichiro Koshikawa

Shinichiro Koshikawa 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: 7895710
    Abstract: A movable member (not shown) non-turnably connected to a second hinge member is arranged on the turning axial line of first and second hinge members such that the movable member is turnable and movable in the direction of the turning axial line. The movable member is biased toward the first hinge member by a coiled spring (not shown). A confronting surface of the first hinge member with respect to the movable member is provided with a pair of raised wall surfaces 11d, 11d extending in the direction of the turning axial line and end face cams 41 arranged between the pair of raised wall parts 11d, 11d, respectively. A confronting surface of the movable member with respect to the first hinge member is provided with a pair of abutment arm parts 42a for converting the biasing force of the coiled spring to a turn biasing force for turning the movable member by being press-contacted with the end face cam 41. A recess 11e is formed in a lower part of the raised wall surface 11d.
    Type: Grant
    Filed: July 20, 2004
    Date of Patent: March 1, 2011
    Assignees: Fujitsu Limited, Sugatsune Kogyo Co., Ltd.
    Inventors: Hisamitsu Takagi, Shinichiro Koshikawa, Kei Tsuruoka, Ryo Niimi
  • Patent number: 7251859
    Abstract: A hinge pin 6 is turnably inserted in a through hole 22 formed in a first hinge member 2. A second hinge member 3 is fixed to the hinge pin 6. A movable member 7 is connected to the first hinge member 2 such that said movable member 7 is non-turnable but movable in the axial direction. A convex part 75 is formed on the movable member 7. A concave part 53 is formed in a fixing member 5 of the second hinge member 3. By pressing the convex part 75 against a bottom surface 53a of the concave part 53 under the biasing force of a coiled spring 8, the biasing force of the coiled spring 8 can be converted to a turn biasing force for turning the second hinge member 3 with respect to the first hinge member 2. The hinge pin 6 is press-fitted in the through-hole 22 of the first hinge member 2.
    Type: Grant
    Filed: May 21, 2003
    Date of Patent: August 7, 2007
    Assignee: Sugatsune Kogyo Co., Ltd.
    Inventors: Kazuyoshi Oshima, Shinichiro Koshikawa, Katsuya Imai
  • Publication number: 20060196009
    Abstract: A movable member is arranged on a turning axial line of first and second hinge members such that the movable member is turnable and movable in the direction of the turning axial line. A confronting surface of the first hinge member with respect to the movable member is provided with an end face cam extending in a peripheral direction about the turning axial line. An abutment arm part of the movable member is press-contacted against the end face cam by a biasing force of a coiled spring. Thereby, the biasing force of the coiled spring is converted to a turn biasing force for turning the movable member. The second hinge member is turned via the movable member by the turn biasing force. A terminal end part of the end face cam is provided with a gentle inclination surface.
    Type: Application
    Filed: July 20, 2004
    Publication date: September 7, 2006
    Applicant: Fijitsu Limited
    Inventors: Hisamitsu Takagi, Shinichiro Koshikawa, Kei Tsuruoka, Ryo Niimi
  • Publication number: 20060174443
    Abstract: A movable member (not shown) non-turnably connected to a second hinge member is arranged on the turning axial line of first and second hinge members such that the movable member is turnable and movable in the direction of the turning axial line. The movable member is biased toward the first hinge member by a coiled spring (not shown). A confronting surface of the first hinge member with respect to the movable member is provided with a pair of raised wall surfaces 11d, 11d extending in the direction of the turning axial line and end face cams 41 arranged between the pair of raised wall parts 11d, 11d, respectively. A confronting surface of the movable member with respect to the first hinge member is provided with a pair of abutment arm parts 42a for converting the biasing force of the coiled spring to a turn biasing force for turning the movable member by being press-contacted with the end face cam 41. A recess 11e is formed in a lower part of the raised wall surface 11d.
    Type: Application
    Filed: July 20, 2004
    Publication date: August 10, 2006
    Inventors: Hisamitsu Takagi, Shinichiro Koshikawa, Kei Tsuruoka, Ryo Niimi
  • Patent number: 7059018
    Abstract: A pair of projection elements 42, 42 are formed on the opposite sides of an inner link 4. Each projection element 42 is formed with a cutout recess 42b. A fitting shaft part 72a, which is formed on each end of an abutment shaft 72, is inserted into the cutout recess 42b through an open part thereof and turnably fitted to a bottom part of the cutout recess 42b. A second abutment part 71c of a coiled spring 71 is abutted with an enlarged-diameter part 72b of the abutment shaft 72. The abutment shaft 72 is biased towards the bottom side of the cutout recess 43b from the open part side thereof by the coiled spring 71.
    Type: Grant
    Filed: December 5, 2002
    Date of Patent: June 13, 2006
    Assignee: Sugatsune Kogyo Co., Ltd.
    Inventors: Shinichiro Koshikawa, Kazuyoshi Oshima
  • Patent number: 6990711
    Abstract: A movable member 6 is connected to a first hinge member 2 such that the movable member 6 is unable to turn but able to move in the axial direction. A hammer member 7 is non-turnably connected to a second hinge member 3. The movable member 6 is caused to abutted against the hammer member 7 by a coiled spring (not shown). A force conversion mechanism (not shown) is disposed between contact surfaces of the movable member 6 and hammer member 7 and adapted to convert a biasing force of the coiled spring to a force for turning the hammer member 7. An abutment projection 32 is formed on an outer periphery of the second hinge member 3. An abutment recess 71 into which the abutment projection 32 is fitted is formed in an outer periphery of the hammer member 71. A width 2 of the abutment recess 71 is set slightly larger than a width W1 of the abutment projection 32 so that the hammer member 7 can be turned relative to the second hinge member 3 to that extent.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: January 31, 2006
    Assignee: Sugatsune Kogyo Co., Ltd.
    Inventors: Shinichiro Koshikawa, Kazuyuki Ishigaya
  • Publication number: 20050160557
    Abstract: A hinge pin 6 is turnably inserted in a through hole 22 formed in a first hinge member 2. A second hinge member 3 is fixed to the hinge pin 6. A movable member 7 is connected to the first hinge member 2 such that said movable member 7 is non-turnable but movable in the axial direction. A convex part 75 is formed on the movable member 7. A concave part 53 is formed in a fixing member 5 of the second hinge member 3. By pressing the convex part 75 against a bottom surface 53a of the concave part 53 under the biasing force of a coiled spring 8, the biasing force of the coiled spring 8 can be converted to a turn biasing force for turning the second hinge member 3 with respect to the first hinge member 2. The hinge pin 6 is press-fitted in the through-hole 22 of the first hinge member 2.
    Type: Application
    Filed: May 21, 2003
    Publication date: July 28, 2005
    Applicant: Sugatsune Kogyo Co., Ltd.
    Inventors: Kazuyoshi Oshima, Shinichiro Koshikawa, Katsuya Imai
  • Patent number: 6904644
    Abstract: A hinge assembly (1) used for a foldable cellular telephone, wherein a pair of abutment members (5, 6) are forcibly rotated by the biasing force of a bias means (7) to a neutral position where the center parts of the projection (54) and the recess (64) of the abutment members are generally aligned with each other in circumferential direction, the projection is brought into contact with the recess at both side parts of the abutment members in circumferential direction when the pair of abutment members are rotated to the neutral position, and the outer surface of the projection and both side surfaces of the recess in circumferential direction should desirably be formed in an arcuate surface and an outwardly projecting arcuate surface, respectively.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: June 14, 2005
    Assignee: Sugatsune Kogyo Co., Ltd.
    Inventors: Kazuyoshi Oshima, Shinichiro Koshikawa, Katsuya Imai
  • Patent number: 6832411
    Abstract: Abutment projections (54, 54) of a resin-made driver member (not shown) are inserted in the opposite end portions of a key groove (41) of a metal-made turnable member (4) in the circumferential direction. A key portion (B3) of a receiving cylindrical portion is inserted between the abutment projections (54, 54). The interval between the abutment projections (54, 54) in the circumferential direction is set to be slightly larger than the width of the key portion (B3). By doing so, when a transmission section is turned into an open position or a closed position, the abutment projections (54, 54) and the key portion (B3) are collided with each other, thereby generating a click sound. Moreover, since both the abutment projections (54, 54) and the key portion (B3) are formed of resin, they can be prevented from getting worn out soon.
    Type: Grant
    Filed: January 15, 2003
    Date of Patent: December 21, 2004
    Assignee: Sugatsune Kogyo Co., Ltd.
    Inventors: Shinichiro Koshikawa, Akira Sasaki, Hiroshi Sudo
  • Patent number: 6785936
    Abstract: The present invention provides a hinge assembly (1) in which a projection and a cam face for converting a biasing force of bias means (9) into a turn biasing force for turning a turnable member (3) disposed at one end portion of a hinge main body (2) in one direction are disposed between the turnable member (3) and a movable member (4) disposed at the hinge main body (2) in such a manner as to be non-turnable but movable in the axial direction, wherein a second movable member (6) and a second turnable member (5) are disposed at the other end portion of the hinge main body (2), and a second projection and a second cam face for converting a biasing force of the bias means (9) in the same direction as the above-mentioned turn biasing force are disposed between the second movable member (6) and the second turnable member (5).
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: September 7, 2004
    Assignee: Sugatsune Kogyo Co., Ltd.
    Inventor: Shinichiro Koshikawa
  • Patent number: 6772481
    Abstract: A hinge assembly (1) used for a foldable cellular telephone, comprising a pair of abutment members (5, 6), a bias means (7) biasing the abutment members so that the abutment members are pressingly brought into contact with each other, a projection (54) extending in the radial direction of one abutment member (5), and a recess (64) allowing the access of the projection thereto formed in the other abutment member (6), wherein the recess (64) is formed of an inside recess and an outside recess on the radial inner and outer sides of the other abutment member, and the inside recess is formed along the center line of the other abutment member and the outside recess is formed so that the width thereof is increased from the inside recess to the outside so that the side surface of the recess is generally formed in a dogleg-like configuration.
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: August 10, 2004
    Assignee: Sugatsune Kogyo Co., Ltd.
    Inventors: Kazuyoshi Oshima, Shinichiro Koshikawa, Katsuya Imai
  • Publication number: 20040068841
    Abstract: A pair of projection elements 42, 42 are formed on the opposite sides of an inner link 4. Each projection element 42 is formed with a cutout recess 42b. A fitting shaft part 72a, which is formed on each end of an abutment shaft 72, is inserted into the cutout recess 42b through an open part thereof and turnably fitted to a bottom part of the cutout recess 42b. A second abutment part 71c of a coiled spring 71 is abutted with an enlarged-diameter part 72b of the abutment shaft 72. The abutment shaft 72 is biased towards the bottom side of the cutout recess 43b from the open part side thereof by the coiled spring 71.
    Type: Application
    Filed: July 29, 2003
    Publication date: April 15, 2004
    Inventors: Shinichiro Koshikawa, Kazuyoshi Oshima
  • Patent number: 6704418
    Abstract: A pair of first conversion faces (55, 55) and a pair of second conversion faces (56, 56) are formed on the end face of a contact member (50) with which a movable member (now shown) comes into contact. The first conversion faces (55, 55) are separated by 180 degrees from each other in the circumferential direction of the contact member (50). The second conversion faces (56, 56) are separated by 180 degrees from each other in the circumferential direction of the contact member (50), and at the same time separated from the first conversion faces (55, 55) by a predetermined angle. The movable member is equipped with a pair of pressing projections which come into contact with the first conversion faces (55, 55) when the cover rotates to its closed position and come into contact with the second conversion faces (56, 56) when the cover rotates to its open position.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: March 9, 2004
    Assignees: NEC Corporation, Ohsashi Technica, Inc., Sugatsune Kogyo, Co., Ltd.
    Inventor: Shinichiro Koshikawa
  • Publication number: 20040025297
    Abstract: Abutment projections (54, 54) of a resin-made driver member (not shown) are inserted in the opposite end portions of a key groove (41) of a metal-made turnable member (4) in the circumferential direction. A key portion (B3) of a receiving cylindrical portion is inserted between the abutment projections (54, 54). The interval between the abutment projections (54, 54) in the circumferential direction is set to be slightly larger than the width of the key portion (B3). By doing so, when a transmission section is turned into an open position or a closed position, the abutment projections (54, 54) and the key portion (B3) are collided with each other, thereby generating a click sound. Moreover, since both the abutment projections (54, 54) and the key portion (B3) are formed of resin, they can be prevented from getting worn out soon.
    Type: Application
    Filed: January 15, 2003
    Publication date: February 12, 2004
    Inventors: Shinichiro Koshikawa, Akira Sakai, Hiroshi Sudo
  • Publication number: 20030101538
    Abstract: The present invention provides a hinge assembly (1) in which a projection and a cam face for converting a biasing force of bias means (9) into a turn biasing force for turning a turnable member (3) disposed at one end portion of a hinge main body (2) in one direction are disposed between the turnable member (3) and a movable member (4) disposed at the hinge main body (2) in such a manner as to be non-turnable but movable in the axial direction, wherein a second movable member (6) and a second turnable member (5) are disposed at the other end portion of the hinge main body (2), and a second projection and a second cam face for converting a biasing force of the bias means (9) in the same direction as the above-mentioned turn biasing force are disposed between the second movable member (6) and the second turnable member (5).
    Type: Application
    Filed: October 22, 2002
    Publication date: June 5, 2003
    Inventor: Shinichiro Koshikawa
  • Patent number: 6543088
    Abstract: A bottom portion 11a is formed on an external end portion of a support sleeve portion 11 which is located on an external side, and an engagement recess 43 is formed in an inner peripheral surface of a support sleeve portion 21 which is located on an internal side. That end face of the engagement recess 43 which faces the support sleeve portion 11 side serves as an engagement surface 44. An engagement piece 45 is formed on one end portion of a hinge body 3. The engagement piece 45 is elastically deformed such that its distal end portion is displaced radially inward of the hinge body 3, thereby the engagement piece 45 is allowed to extend beyond a bottom surface of a key groove 41. Thereafter, the engagement body 45 is elastically restored such that its distal end portion is displaced radially outward of the hinge body 3, thereby the engagement piece 45 is engaged with the engagement recess 43.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: April 8, 2003
    Assignee: Sugatsune Kogyo Co., Ltd.
    Inventor: Shinichiro Koshikawa
  • Publication number: 20030056325
    Abstract: A movable member 6 is connected to a first hinge member 2 such that the movable member 6 is unable to turn but able to move in the axial direction. A hammer member 7 is non-turnably connected to a second hinge member 3. The movable member 6 is caused to abutted against the hammer member 7 by a coiled spring (not shown). A force conversion mechanism (not shown) is disposed between contact surfaces of the movable member 6 and hammer member 7 and adapted to convert a biasing force of the coiled spring to a force for turning the hammer member 7. An abutment projection 32 is formed on an outer periphery of the second hinge member 3. An abutment recess 71 into which the abutment projection 32 is fitted is formed in an outer periphery of the hammer member 71. A width 2 of the abutment recess 71 is set slightly larger than a width W1 of the abutment projection 32 so that the hammer member 7 can be turned relative to the second hinge member 3 to that extent.
    Type: Application
    Filed: September 16, 2002
    Publication date: March 27, 2003
    Inventors: Shinichiro Koshikawa, Kazuyuki Ishigaya
  • Publication number: 20030009851
    Abstract: A hinge assembly (1) used for a foldable cellular telephone, comprising a pair of abutment members (5, 6), a bias means (7) biasing the abutment members so that the abutment members are pressingly brought into contact with each other, a projection (54) extending in the radial direction of one abutment member (5), and a recess (64) allowing the access of the projection thereto formed in the other abutment member (6), wherein the recess (64) is formed of an inside recess and an outside recess on the radial inner and outer sides of the other abutment member, and the inside recess is formed along the center line of the other abutment member and the outside recess is formed so that the width thereof is increased from the inside recess to the outside so that the side surface of the recess is generally formed in a dogleg-like configuration.
    Type: Application
    Filed: July 24, 2002
    Publication date: January 16, 2003
    Inventors: Kazuyoshi Oshima, Shinichiro Koshikawa, Katsuya Imai
  • Publication number: 20030009852
    Abstract: A hinge assembly (1) used for a foldable cellular telephone, wherein a pair of abutment members (5, 6) are forcibly rotated by the biasing force of a bias means (7) to a neutral position where the center parts of the projection (54) and the recess (64) of the abutment members are generally aligned with each other in circumferential direction, the projection is brought into contact with the recess at both side parts of the abutment members in circumferential direction when the pair of abutment members are rotated to the neutral position, and the outer surface of the projection and both side surfaces of the recess in circumferential direction should desirably be formed in an arcuate surface and an outwardly projecting arcuate surface, respectively.
    Type: Application
    Filed: July 24, 2002
    Publication date: January 16, 2003
    Inventors: Kazuyoshi Oshima, Shinichiro Koshikawa, Katsuya Imai
  • Publication number: 20010004786
    Abstract: A bottom portion 11a is formed on an external end portion of a support sleeve portion 11 which is located on an external side, and an engagement recess 43 is formed in an inner peripheral surface of a support sleeve portion 21 which is located on an internal side. That end face of the engagement recess 43 which faces the support sleeve portion 11 side serves as an engagement surface 44. An engagement piece 45 is formed on one end portion of a hinge body 3. The engagement piece 45 is elastically deformed such that its distal end portion is displaced radially inward of the hinge body 3, thereby the engagement piece 45 is allowed to extend beyond a bottom surface of a key groove 41. Thereafter, the engagement body 45 is elastically restored such that its distal end portion is displaced radially outward of the hinge body 3, thereby the engagement piece 45 is engaged with the engagement recess 43.
    Type: Application
    Filed: December 19, 2000
    Publication date: June 28, 2001
    Inventor: Shinichiro Koshikawa