Patents by Inventor Toshiki Yokoyama

Toshiki Yokoyama 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: 9051145
    Abstract: A slide rail assembly includes an inner rail unit, a pair of first and second outer rails, first and second roller mounted to the inner rail unit, and third and fourth rollers mounted to the pair of first and second outer rails. The inner rail unit includes an inner substrate assembly, a pair of first bent portions provided to a first side of the inner substrate assembly, and a pair of second bent portions provided to a second side of the inner substrate assembly. The first outer rail includes a first outer substrate and a pair of third bent portions. The second outer rail includes a second outer substrate and a pair of fourth bent portions. The pair of first and second outer rails is disposed with the pairs of third and fourth bent portions facing inward, and slidable against the inner rail unit.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: June 9, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Toshiki Yokoyama, Yasutomo Ide, Yasuhiro Kuba, Tsuyoshi Hashiyada, Kouhei Okamoto
  • Patent number: 8879972
    Abstract: A fuser includes a cylindrical heating rotating body including a heat generator and a pressure rotating body including a circumferential face which has contact with the heating rotating body to form a nip portion for fusing, wherein a disk-like outside plate, which is exposed outside, is provided in one end or both ends of the heating rotating body in a rotation axis direction, a disk-like inside plate is provided in an inner circumferential face of the heating rotating body on an inside of the outside plate to have an interval relative to the outside plate, a center vent is provided near a center of the outside plate, an outer edge vent is provided in an outer edge or the neighborhood thereof of the outside plate, and a flow path, which connects the center vent and the outer edge vent, is provided between the outside vent and the inside vent.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: November 4, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Hisashi Kawamoto, Kenji Maeda, Kenji Taguchi, Yukari Isoe, Toshiki Yokoyama
  • Patent number: 8870310
    Abstract: A slide rail comprises a fixed rail; a movable rail slidably attached to the fixed rail; and a roller that is attached to at least one of the fixed rail and the movable rail and runs on the other one of the fixed rail and the movable rail as the movable rail slides, the other one of the fixed rail and the movable rail including a running wall on which the roller runs and sliding contact walls that come into sliding contact with opposite side surfaces, in a direction of a rotation axis of the roller, of the roller, wherein the roller includes a metal-made roller main body and a pair of resin-made sliding plates that sandwich the roller main body from opposite sides thereof in the direction of the rotation axis of the roller, and the pair of sliding plates are in sliding contact with the sliding contact walls.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: October 28, 2014
    Assignee: Ricoh Company, Limited
    Inventors: Yasuhiro Kuba, Yasutomo Ide, Tsuyoshi Hashiyada, Toshiki Yokoyama, Kouhei Okamoto
  • Patent number: 8843052
    Abstract: A slide rail includes an outer rail including a first rail board and a pair of rims projecting from the first rail board, forming first grooves, an inner rail inserted between the first grooves and including a second rail board narrower than the first rail board and a pair of rims projecting from the second rail board, forming second grooves, a large-diameter roller held between the first grooves and attached to a leading side of the second rail board in a direction in which the inner rail is inserted, and a small-diameter roller held between the second grooves and attached to a leading side of the first rail board in a direction in which the inner rail is drawn out. The first and second rail boards include protruding portions extending along the long side and protruding outward.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: September 23, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshiki Yokoyama, Yasutomo Ide, Yasuhiro Kuba, Tsuyoshi Hashiyada, Kouhei Okamoto
  • Publication number: 20140191645
    Abstract: A slide rail comprises a fixed rail; a movable rail slidably attached to the fixed rail; and a roller that is attached to at least one of the fixed rail and the movable rail and runs on the other one of the fixed rail and the movable rail as the movable rail slides, the other one of the fixed rail and the movable rail including a running wall on which the roller runs and sliding contact walls that come into sliding contact with opposite side surfaces, in a direction of a rotation axis of the roller, of the roller, wherein the roller includes a metal-made roller main body and a pair of resin-made sliding plates that sandwich the roller main body from opposite sides thereof in the direction of the rotation axis of the roller, and the pair of sliding plates are in sliding contact with the sliding contact walls.
    Type: Application
    Filed: December 26, 2013
    Publication date: July 10, 2014
    Applicant: RICOH COMPANY, LIMITED
    Inventors: Yasuhiro KUBA, Yasutomo IDE, Tsuyoshi HASHIYADA, Toshiki YOKOYAMA, Kouhei OKAMOTO
  • Patent number: 8757614
    Abstract: A slide rail includes a fixed rail, an intermediate rail a movable rail, and a first to fourth rollers. Use of three rails makes a total length of the slide rail shorter to provide a compact slide rail. The fixed rail includes a rectangular-shaped first plate and a pair of first bent parts; the intermediate rail includes a rectangular-shaped second plate opposed to the first plate and a pair of second bent parts; and the movable rail includes a rectangular-shaped third plate opposed to the second plate and a pair of third bent parts. Among the bent parts, the third bent parts are bent in a direction opposite that of the first and second bent parts.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: June 24, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Kouhei Okamoto, Yasutomo Ide, Yasuhiro Kuba, Toshiki Yokoyama, Tsuyoshi Hashiyada
  • Publication number: 20130334949
    Abstract: A slide rail assembly includes an inner rail unit, a pair of first and second outer rails, first and second roller mounted to the inner rail unit, and third and fourth rollers mounted to the pair of first and second outer rails. The inner rail unit includes an inner substrate assembly, a pair of first bent portions provided to a first side of the inner substrate assembly, and a pair of second bent portions provided to a second side of the inner substrate assembly. The first outer rail includes a first outer substrate and a pair of third bent portions. The second outer rail includes a second outer substrate and a pair of fourth bent portions. The pair of first and second outer rails is disposed with the pairs of third and fourth bent portions facing inward, and slidable against the inner rail unit.
    Type: Application
    Filed: June 5, 2013
    Publication date: December 19, 2013
    Applicant: RICOH COMPANY, LTD.
    Inventors: Toshiki Yokoyama, Yasutomo Ide, Yasuhiro Kuba, Tsuyoshi Hashiyada, Kouhei Okamoto
  • Publication number: 20130334766
    Abstract: A slide rail includes a fixed rail, an intermediate rail a movable rail, and a first to fourth rollers. Use of three rails makes a total length of the slide rail shorter to provide a compact slide rail. The fixed rail includes a rectangular-shaped first plate and a pair of first bent parts; the intermediate rail includes a rectangular-shaped second plate opposed to the first plate and a pair of second bent parts; and the movable rail includes a rectangular-shaped third plate opposed to the second plate and a pair of third bent parts. Among the bent parts, the third bent parts are bent in a direction opposite that of the first and second bent parts.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 19, 2013
    Applicant: RICOH COMPANY, LTD.
    Inventors: Kouhei Okamoto, Yasutomo Ide, Yasuhiro Kuba, Toshiki Yokoyama, Tsuyoshi Hashiyada
  • Publication number: 20130156476
    Abstract: A slide rail includes an outer rail including a first rail board and a pair of rims projecting from the first rail board, forming first grooves, an inner rail inserted between the first grooves and including a second rail board narrower than the first rail board and a pair of rims projecting from the second rail board, forming second grooves, a large-diameter roller held between the first grooves and attached to a leading side of the second rail board in a direction in which the inner rail is inserted, and a small-diameter roller held between the second grooves and attached to a leading side of the first rail board in a direction in which the inner rail is drawn out. The first and second rail boards include protruding portions extending along the long side and protruding outward.
    Type: Application
    Filed: November 12, 2012
    Publication date: June 20, 2013
    Inventors: Toshiki YOKOYAMA, Yasutomo IDE, Yasuhiro KUBA, Tsuyoshi HASHIYADA, Kouhei OKAMOTO
  • Publication number: 20130022381
    Abstract: A fuser includes a cylindrical heating rotating body including a heat generator and a pressure rotating body including a circumferential face which has contact with the heating rotating body to form a nip portion for fusing, wherein a disk-like outside plate, which is exposed outside, is provided in one end or both ends of the heating rotating body in a rotation axis direction, a disk-like inside plate is provided in an inner circumferential face of the heating rotating body on an inside of the outside plate to have an interval relative to the outside plate, a center vent is provided near a center of the outside plate, an outer edge vent is provided in an outer edge or the neighborhood thereof of the outside plate, and a flow path, which connects the center vent and the outer edge vent, is provided between the outside vent and the inside vent.
    Type: Application
    Filed: July 19, 2012
    Publication date: January 24, 2013
    Inventors: Hisashi KAWAMOTO, Kenji Maeda, Kenji Taguchi, Yukari Isoe, Toshiki Yokoyama
  • Patent number: 8348258
    Abstract: A driving force transmitting device comprising: an output shaft which can output a rotating force, and a casing which supports the output shaft so that a leading tip part of the output shaft can expose the outside, wherein the output shaft is provided on the casing so that the tip end surface thereof is flash with or substantially flash with an outer surface of the casing or the tip end surface thereof is recessed interior of the outer surface, and wherein the tip end surface thereof is provided with an engaging part which is insertable/removable to/from an engaged part provided on a driven member.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: January 8, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Shinichi Kato, Masanobu Yamagata, Katsuhiko Hanagaki, Toshio Yanata, Tsuyoshi Hashiyada, Toshiki Yokoyama
  • Publication number: 20110049789
    Abstract: A driving force transmitting device comprising: an output shaft which can output a rotating force, and a casing which supports the output shaft so that a leading tip part of the output shaft can expose the outside, wherein the output shaft is provided on the casing so that the tip end surface thereof is flash with or substantially flash with an outer surface of the casing or the tip end surface thereof is recessed interior of the outer surface, and wherein the tip end surface thereof is provided with an engaging part which is insertable/removable to/from an engaged part provided on a driven member.
    Type: Application
    Filed: August 26, 2010
    Publication date: March 3, 2011
    Applicant: RICOH COMPANY, LTD.
    Inventors: Shinichi KATO, Masanobu Yamagata, Katsuhiko Hanagaki, Toshio Yanata, Tsuyoshi Hashiyada, Toshiki Yokoyama
  • Patent number: 6042311
    Abstract: A chamfering apparatus for chamfering a work has an adapter which surrounds a tool support, has one end fixed to a casing and the other end projecting from the casing, and is arranged coaxially with the axis of a rotating shaft. This chamfering apparatus includes an eccentric ring rotatably mounted around the adapter, a lock plate rotatably mounted around the eccentric ring, a work guide attached to the lock plate and having a predetermined guide direction to guide a tool support along the work, and keeping means for keeping the angle between the guide direction of the work guide and the output shaft of a motor at a predetermined value when the lock plate and the work guide are translated with respect to the axis of the rotating shaft by rotating the eccentric ring with respect to the adapter.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: March 28, 2000
    Assignee: Nitto Kohki Co., Ltd.
    Inventors: Toshiki Yokoyama, Munenori Yamaguchi, Yasuo Kazama