Patents by Inventor Joichi Nakamura

Joichi 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).

  • Publication number: 20080258332
    Abstract: A manufacturing apparatus and a manufacturing method that can form in successive processes tooth-marks longitudinally at a regular pitch on the back side of a passenger-conveyor moving handrail. The manufacturing apparatus includes: a material feed port through which a thermoplastic resin is fed; a heater that heats the fed thermoplastic resin; a molding machine that extrusion-molds the thermoplastic resin having been fluidized; and a tooth-mark forming tool, which is a tooth-mark forming device, that forms tooth-marks longitudinally at a regular pitch on the back side of a preformed moving-handrail material having been extrusion-molded, while it is in a state in a plastically deformable temperature range.
    Type: Application
    Filed: January 19, 2005
    Publication date: October 23, 2008
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yutaka Hashioka, Jiro Matsuyama, Takahiko Nagaoka, Atsushi Kawasaki, Joichi Nakamura
  • Patent number: 7124875
    Abstract: An escalator with a high speed inclined section, includes link mechanisms, each of which has a first link with a first end rotatably connected to a step link roller shaft, and a second link, a first end of which is rotatably connected to a middle portion of the first link and a second end of which is rotatably connected to a step link roller shaft of an adjacent step. A rotatable auxiliary roller is located at a second end of the first link.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: October 24, 2006
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Manabu Ogura, Takashi Yumura, Joichi Nakamura
  • Patent number: 7104386
    Abstract: In an escalator having a high-speed inclined portion, shape of an auxiliary track in a speed-changing region for steps is determined by finding a positional relationship between step link roller shafts of at least one of the steps and an adjacent step from a step speed profile representing speed of the step link roller shafts as a function of time. The shape of a riser is determined such that the riser aligns with a relative movement locus of the adjacent step by finding a relative positional relationship between the step and the adjacent step from the step speed profile.
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: September 12, 2006
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Manabu Ogura, Takashi Yumura, Yasumasa Haruta, Tatsuya Yoshikawa, Shinji Nagaya, Joichi Nakamura
  • Patent number: 6832678
    Abstract: In an escalator with a high speed inclined section, steps are coupled in an endless manner and circulate. Driving roller shafts of the steps adjacent to each other are coupled with each other by a link mechanism. An interval between the driving roller shafts is changed as the link mechanism is transformed. An outer peripheral length change absorbing mechanism is provided in a reversing section of a circulation path of the steps. The outer peripheral length change absorbing mechanism absorbs a change in an outer peripheral length of a polygon, formed by connecting axes of the driving rollers with straight lines, while guiding movement of the driving rollers in the reversing section.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: December 21, 2004
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Manabu Ogura, Takashi Yumura, Joichi Nakamura
  • Publication number: 20040195046
    Abstract: In an escalator having a high-speed inclined portion escalator, a shape for of an auxiliary track in a speed-changing region for steps is determined by finding a positional relationship between step link roller shafts of at least one of the steps and an adjacent step from a step speed profile representing a speed of the step link roller shafts relative to as a function of time. A The shape for of a riser is determined such that the riser aligns with a relative movement locus of the adjacent step by finding a relative positional relationship between the step and the adjacent step from the step speed profile.
    Type: Application
    Filed: January 7, 2004
    Publication date: October 7, 2004
    Inventors: Manabu Ogura, Takashi Yumura, Yasumasa Haruta, Tatsuya Yoshikawa, Shinji Nagaya, Joichi Nakamura
  • Patent number: 6796416
    Abstract: In an escalator with a high speed inclined section, shape of an auxiliary rail is set, in a section between a forward path side horizontal section and a forward path side constant inclined section of a circulation path, such that, of steps adjacent to each other, a moving track of a relative position of a step on a lower step side with respect to a step on an upper step side is the same as surface shape of a riser of the step on the upper step side.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: September 28, 2004
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Manabu Ogura, Takashi Yumura, Joichi Nakamura
  • Publication number: 20040060799
    Abstract: In the escalator with a high speed inclined section, a shape of an auxiliary rail is set in a section between a forward path side horizontal section and a forward path side constant inclined section of a circulation path such that, of steps adjacent to each other, a moving track of a relative position of a step on a lower step side with respect to a step on an upper step side is the same as a surface shape of a riser of the step on the upper step side.
    Type: Application
    Filed: June 24, 2003
    Publication date: April 1, 2004
    Inventors: Manabu Ogura, Takashi Yumura, Joichi Nakamura
  • Publication number: 20040035676
    Abstract: In an escalator with a high speed inclined section, a plurality of steps are coupled in an endless manner and are moved to circulate. Driving roller shafts of the steps adjacent to each other are coupled with each other by a link mechanism. An interval between the driving roller shafts is changed as the link mechanism is transformed. An outer peripheral length change absorbing mechanism is provided in a reversing section of a circulation path of the steps. The outer peripheral length change absorbing mechanism absorbs a change in an outer peripheral length of a polygon formed by connecting axes of the driving rollers with straight lines, while guiding the movement of the driving rollers in the reversing section.
    Type: Application
    Filed: June 5, 2003
    Publication date: February 26, 2004
    Inventors: Manabu Ogura, Takashi Yumura, Joichi Nakamura
  • Publication number: 20030136634
    Abstract: There is provided an escalator with a high speed inclined section, including a plurality of link mechanisms each of which has a first link with one end portion thereof rotatably connected to a step link roller shaft and a second link one end portion of which is rotatably connected to a middle portion of the first link and the other end portion of which is rotatably connected to a step link roller shaft of an adjacent step. In the other end of the first link, a rotatable auxiliary roller is provided.
    Type: Application
    Filed: October 11, 2002
    Publication date: July 24, 2003
    Applicant: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Manabu Ogura, Takashi Yumura, Joichi Nakamura
  • Publication number: 20030136633
    Abstract: An escalator with a high speed inclined section according to the present invention is structured such that assuming that an upper-step-side end of a tread is the origin of a coordinate system when a step is seen from a side with the tread being horizontal and on an upper side, a riser passes a point whose horizontal and vertical coordinates can be expressed as follows: (kr cos &agr;m, −kr sin &agr;m) (where k is a speed change ratio; r is a distance between the step link roller shafts of the steps adjacent to each other in an upper and lower landing sections; and &agr;m is an inclination angle of an intermediate inclined section).
    Type: Application
    Filed: October 18, 2002
    Publication date: July 24, 2003
    Applicant: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Manabu Ogura, Takashi Yumura, Yasumasa Haruta, Tatsuya Yoshikawa, Shinji Nagaya, Joichi Nakamura
  • Patent number: 6591959
    Abstract: In an escalator with a high speed inclined section, assuming that an upper-step-side end of a tread is the origin of a coordinate system when a step is seen from a side with the tread being horizontal and on an upper side, a riser passes a point whose horizontal and vertical coordinates can be expressed as (kr cos &agr;m, −kr sin &agr;m) (where k is a speed change ratio; r is a distance between the step link roller shafts of steps adjacent to each other in upper and lower landing sections; and &agr;m is an inclination angle of an intermediate inclined section).
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: July 15, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Manabu Ogura, Takashi Yumura, Yasumasa Haruta, Tatsuya Yoshikawa, Shinji Nagaya, Joichi Nakamura
  • Patent number: 6588573
    Abstract: An escalator with a high speed inclined section in which a position of a link connection point is determined by the following equations: XM=X1+L1 cos {&bgr;−&ggr;}, and YM=Y1+L1 sin {&bgr;−&ggr;} (where &bgr;=tan−1{(Y1−Y2)/(X1−X2)}; &ggr;=cos−1{(L12−L22+W2)/2L1W}; W={square root over ( )}{(X1−X2)+(Y1−Y2)}; XM: horizontal coordinate of the link connection point; YM: vertical coordinate of the link connection point; L1: a distance from axis of an upper-step-side step link roller shaft to the link connection point; and L2: a distance from axis of a lower-step-side step link roller shaft to the link connection point).
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: July 8, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Manabu Ogura, Takashi Yumura, Yasumasa Haruta, Tatsuya Yoshikawa, Shinji Nagaya, Joichi Nakamura
  • Patent number: D373950
    Type: Grant
    Filed: June 14, 1995
    Date of Patent: September 24, 1996
    Assignee: Tsubakimoto Chain Co.
    Inventors: Tomofumi Otani, Joichi Nakamura, Takero Nakagawa, Shuji Sasamoto, Yoshitaka Yoshimura