Patents by Inventor Chuichi Saito

Chuichi Saito 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: 6390270
    Abstract: In an escalator having a plurality of steps connected to an endless chain and moved along an endless path, a rotation locus of step forward wheels at both end portions is shifted toward end portions of the escalator relative to a rotation locus of the chain. A forward wheel guide track for guiding forward wheels of the steps is arranged, at both end portions of the escalator, so that a straight distance between forward wheels of two adjacent steps, which distance tends to be shortened by the chain following an arc at both end portions, is extended. By such constructions, interference between adjacent steps hardly occurs even if the rotation diameter of the steps at each end portion of the escalator is made small. Therefore, the rotation diameter of the steps can be made smaller than a conventional one and the escalator thickness (depth) can be made small.
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: May 21, 2002
    Assignees: Hitachi, Ltd., Hitachi Building Systems Co., Ltd.
    Inventors: Hirofumi Utsunomiya, Chuichi Saito, Kazuhira Ojima
  • Patent number: 6247574
    Abstract: An object of the present invention is to provide an escalator installation method by which the installation operation can be conducted with the high operation efficiency and an escalator can be stably installed. In an architectural structure having a stairway, the present invention comprises: a first process for forming a lower pit in a lower floor positioned on the lower side of the stairway; a second process for forming an upper pit in an upper floor positioned on the upper side of the stairway; and a third process for accommodating a lower flat portion of an escalator constituted by an integral structure in the lower pit with the part of the stairway positioned between the upper pit and the lower pit being maintained so as not to be drilled, accommodating an upper flat portion in the upper pit, and setting an inclined portion of the escalator above the part of the stairs positioned between the upper pit and the lower pit.
    Type: Grant
    Filed: March 14, 2000
    Date of Patent: June 19, 2001
    Assignees: Hitachi, Ltd., Hitachi Building Systems Co., Ltd.
    Inventors: Yukihiro Yamaguchi, Masamitsu Yamaki, Chuichi Saito
  • Patent number: 5526919
    Abstract: Escalator apparatus of the invention is of the type that has a step whose step board can be raised to provide a surface for carrying a wheelchair. In order to realize conveyance of a large size wheelchair or handcart without changing the installation space for the escalator, the escalator apparatus of the invention is structured such that the step boards of a plurality of adjacent steps are movable upwardly and downwardly.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: June 18, 1996
    Assignees: Hitachi, Ltd., Hitachi Mito Engineering Co., Ltd.
    Inventors: Kazuhira Ojima, Chuichi Saito, Kazutoshi Takeda, Toshiyuki Tamatsu
  • Patent number: 5386904
    Abstract: Escalator apparatus of the invention is of the type that has a step whose step board can be raised to provide a surface for carrying a wheelchair. In order to realize conveyance of a large size wheelchair or handcart without changing the installation space for the escalator, the escalator apparatus of the invention is structured such that the step boards of a plurality of adjacent steps are movable upwardly and downwardly.
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: February 7, 1995
    Assignees: Hitachi, Ltd., Hitachi Mito Engineering
    Inventors: Kazuhira Ojima, Chuichi Saito, Kazutoshi Takeda, Toshiyuki Tamatsu
  • Patent number: 5348131
    Abstract: A drive unit of a conveyer having a frame structure extending from one place to another place, a step chain mounting thereon a plurality of step treads and arranged inside the frame structure and a step chain sprocket for driving the step chain, which drive unit comprises a reduction gear and a motor for driving and controlling the step chain sprocket through the reduction gear, and is characterized in that the whole upper side of the reduction gear is of an opening covered with a base plate, and that the base plate is formed by unifying a top cover for the opening of the reduction gear and a motor base through reinforcing ribs disposed therebetween so as to be parallel to each other, the motor being mounted on the base plate so as to be horizontally movable in a direction perpendicular to an output shaft of the motor.
    Type: Grant
    Filed: September 3, 1993
    Date of Patent: September 20, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Yukihiro Yamaguchi, Chuichi Saito, Tatsuhiko Takahashi, Tomomi Haraguchi
  • Patent number: 5295568
    Abstract: In a passenger conveyor, in order to reduce installation dimensions and, more particularly, a height of the passenger conveyor, the passenger conveyor is constructed to be driven by a linear motor, with stators and moving members of the linear motor being formed such that surfaces thereof facing each other are located in horizontal planes and generated magnetic flux of the stators is perpendicular to the facing surfaces. The moving members are mounted on the respective treadboards.
    Type: Grant
    Filed: March 10, 1993
    Date of Patent: March 22, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Chuichi Saito, Kazuhira Ojima, Masao Nakazato
  • Patent number: 5291982
    Abstract: A passenger conveyor includes a platform floor having a slanting portion. A length of the slanting portion is not less than a length of each of treadboards of the passenger conveyor, and at least one of the treadboards of an advance side, when passing under the platform floor, is disposed horizontally beneath the slanting portion. With this arrangement, a push cart or the like can be smoothly moved from the treadboard to the platform floor.
    Type: Grant
    Filed: January 12, 1993
    Date of Patent: March 8, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Chuichi Saito, Masao Takizawa, Kazutoshi Takeda, Kazuhira Ojima, Mitsuo Saito
  • Patent number: 5178254
    Abstract: A passenger conveyor, such as an escalator or a moving walkway, in which a device for transmitting a change of direction of the movement of treadboards to a passenger by changing the passenger's sense of touch is provided in the vicinity of a boundary between a horizontal path and an inclined path. With this construction, a level difference between the adjacent treadboards is produced when the treadboard moves into the inclined path, thereby preventing the passenger from accidentally falling down.
    Type: Grant
    Filed: August 8, 1990
    Date of Patent: January 12, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Chuichi Saito, Masao Takizawa, Kazuhira Ojima, Yoozi Inanobe, Akihiro Sato, Minoru Onodera
  • Patent number: 5160009
    Abstract: A passenger conveyor comprises a moving handrail mounted on a guide rail provided around a balustrade and a handrail driving device for driving the moving handrail to move circulatively. The moving handrail is constituted by a core member and a surface decorative member which is removably attached, i.e. removably engaged, to the core member, and the core member is driven by the handrail driving device. The moving handrail may be constituted by a core member and a surface decorative member which are formed separately and joined together.
    Type: Grant
    Filed: May 4, 1990
    Date of Patent: November 3, 1992
    Assignees: Hitachi, Ltd., Hitachi Cable, Ltd.
    Inventors: Hiroumi Iyoda, Chuichi Saito, Mamoru Shiina, Yoshitaka Fujii
  • Patent number: 5135097
    Abstract: An escalator comprises a plurality of treadboards, coupled with each other in the endless form, for conveying people thereon, a driving device for driving the treadboards, which has a driving mechanism, including an electric motor, for transmitting a driving force from the motor to the treadboards and a power converting unit for supplying electric power to the motor. Component devices of the driving device are categorized into two groups in consideration of heat generated in the respective component devices. Component devices, which are categorized into a group of heat generating devices, are installed in a machine room, and component devices, which are categorized into a group of heat sensitive devices, are installed in another machine room. The two machine rooms are arranged in different locations within an escalator frame, which are remote from each other in the direction of the length of the frame.
    Type: Grant
    Filed: May 23, 1991
    Date of Patent: August 4, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Chuichi Saito, Yoshio Sakai, Hideaki Takahashi, Kazuhira Ojima, Kazumi Kobune, Hisao Chiba
  • Patent number: 5040659
    Abstract: Indicating apparatus for passenger conveyor includes an indicating body arranged near a platform of the conveyor and outside a balustrade panel. The indicating body is located and secured at a position where the upper edge thereof is downwardly apart from a frame which is mounted on the upper edge of the balustrade panel for supporting a moving handrail.
    Type: Grant
    Filed: October 30, 1989
    Date of Patent: August 20, 1991
    Assignees: Hitachi, Ltd., Hitachi Elevator Engineering Co., Ltd.
    Inventors: Chuichi Saito, Masamitsu Hanano, Hideo Kuwajima
  • Patent number: 4984673
    Abstract: A support surface, particularly for the tread of passenger conveyers, as anti-slip, strengthening and wear resistant grooves deformed in the top portion of cleats formed by corrugating metal.
    Type: Grant
    Filed: March 3, 1989
    Date of Patent: January 15, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Chuichi Saito, Kazuhira Ojima, Yoshihiro Ohsumi
  • Patent number: 4871056
    Abstract: In a balustrade for a passenger conveyor, a main deck is fixedly mounted to an upper end of a vertically upright balustrade panel, and a guide frame is arranged on the main deck for slidingly guiding a handrail. In order to easily carry out an operation of fixedly mounting the main deck to the upper end of the balustrade panel, at least one fixing instrument is provided which has an inverted U-shaped fitting groove on one side and a fixing section on the other side, and the main deck is fixedly mounted to the upper end of the balustrade panel through the fixing instrument.
    Type: Grant
    Filed: May 26, 1988
    Date of Patent: October 3, 1989
    Assignee: Hitachi, Ltd.
    Inventor: Chuichi Saito
  • Patent number: 4819781
    Abstract: A passenger conveyor has a pair of balustrades on opposite sides of a plurality of steps connected together to circulate endlessly. Each of the balustrades comprises a structural support member mounted on a main body frame in spaced relation in the length direction of the main body frame. The structural support members each are made of a casing of one piece and have a U-shaped support portion supporting a lower end portion of the balustrade, a mounting flange portion projecting horizontally from one side of the U-shaped support portion, being mounted by the main body frame and mounting thereon an outer deck cover, a mounting projection horizontally projecting from the opposite side of the U-shaped support portion and mounting thereon an inner deck cover and skirt guard, and a pair of downward projections which serve to reinforce the U-shaped support portion as well as connection of a handrail guide for holding a handrail.
    Type: Grant
    Filed: April 22, 1987
    Date of Patent: April 11, 1989
    Assignees: Hitachi, Ltd., Hitachi Elevator Engineering Co., Ltd.
    Inventors: Chuichi Saito, Masamitsu Hanano
  • Patent number: 4627527
    Abstract: A balustrade for a passenger conveyor includes a glass panel, an inner deck cover located inside the glass panel, an outer deck cover located outside the glass panel, and a packing mounted between the glass panel and the inner and outer deck covers. The packing is of unitary structure formed of hard material, and is formed with a groove for receiving a lower end portion of the glass panel, and grooves for receiving end portions of the inner and outer deck covers. The packing is bolted to a support bed at its side while holding the glass panel at its lower portion.
    Type: Grant
    Filed: November 13, 1984
    Date of Patent: December 9, 1986
    Assignee: Hitachi, Ltd.
    Inventor: Chuichi Saito
  • Patent number: 4598811
    Abstract: This invention describes a balustrade for passenger conveyors, comprising a handrail adapted to be moved synchronously with endless moving stairway, panels consisting of transparent glass plates and, immediately under the handrail, an upper unit provided between upper ends of the transparent panels and a lower surface of the handrail and adapted so as to guide the handrail, and a lower unit provided at the lower ends of the transparent panels and consisting of inner and outer decks, the handrail-guiding upper unit consisting of a guide frame adapted to guide the handrail and having a groove for fitting upper the end portions of the tranparent panels thereinto, a fastener for press-tightening the transparent panels in the groove, a limiter for restricting the tightening force of the fastener and guides fitted around an outer circumferential surface of the guide frame, the upper unit as a whole being positioned within the handrail.
    Type: Grant
    Filed: August 5, 1985
    Date of Patent: July 8, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Masamitsu Hanano, Chuichi Saito
  • Patent number: 4449623
    Abstract: A balustrade for use with passenger conveyors including a second deck member bent to assume an arcuate shape at landings, and having a U-shaped cross-section adapted to be opened facing the center of the arc, and deformation preventing strips formed by bending the second deck member adjacent its opening which defines an inner periphery of the arcuate-shaped sections of the second deck member.
    Type: Grant
    Filed: February 10, 1983
    Date of Patent: May 22, 1984
    Assignee: Hitachi, Ltd.
    Inventors: Chuichi Saito, Katsuya Teranishi, Katsuyoshi Baba, Yoshihiro Osumi
  • Patent number: 3934699
    Abstract: A moving stairway having inlet housings provided externally of skirt guards, adjacent to entrance and exit portions thereof, through which handrails run in or run out. This handrail safety device comprises each of said inlet housings being provided externally of each skirt guard entrance and exit portions through which the handrails run in or run out; and a detecting switch provided in each inlet housing, said detecting switch being actuated in response to an external force acting on the inlet housing in a horizontal or vertical direction thereof, thereby interrupting movement of the moving stairway.
    Type: Grant
    Filed: March 1, 1974
    Date of Patent: January 27, 1976
    Assignee: Hitachi, Ltd.
    Inventors: Chuichi Saito, Schoichi Nakao
  • Patent number: D344384
    Type: Grant
    Filed: August 12, 1992
    Date of Patent: February 15, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Noboru Yamamoto, Shinji Shibuya, Akira Omachi, Yoko Ichikawa, Norio Kamoshita, Chuichi Saito