Patents Assigned to Nihon Biso Co., Ltd.
  • Patent number: 5845739
    Abstract: A suspension support device provided movably on the upper surface of a building for suspending, by means of ropes, an outer wall working machine having fitting and moving members which can be fittedly engaged in a pair of guide grooves formed vertically on an outer wall surface of the building, and lowering and lifting the outer wall working machine along the guide grooves includes a main body comprising a movable base capable of moving on the upper surface of the building, a rotary body provided on the movable base rotatably about a vertical first axis and a winding device for taking up and feeding out the ropes, a pivotable arm supported on the main body pivotably about a vertical second axis, and a holding unit provided on the foremost end portion of the pivotable arm rotatably about a vertical third axis and including a pair of holding guide members provided at an interval equal to an interval of the pair of guide grooves and capable of receiving the fitting and moving members.
    Type: Grant
    Filed: March 18, 1997
    Date of Patent: December 8, 1998
    Assignee: Nihon Biso Co., Ltd.
    Inventor: Shigeru Ohtsuki
  • Patent number: 5791862
    Abstract: A suspension support device is provided movably on the upper surface of a building for suspending, by means of ropes, an outer wall working machine having fitting and moving members which can be fittedly engaged in a pair of guide grooves formed vertically on an outer wall surface of the building, and lowering and lifting the outer wall working machine along the guide grooves.
    Type: Grant
    Filed: March 18, 1997
    Date of Patent: August 11, 1998
    Assignee: Nihon Biso Co., Ltd.
    Inventors: Shigeru Ohtsuki, Masahiro Michikoshi, Mitsuru Kawahara, Huang Jian Jun
  • Patent number: 5772170
    Abstract: A suction chamber is provided in the rear portion of a pad body remote from an external pad supporting surface. The fore end portion of the pad body facing the pad supporting surface is divided into a plurality of sucking compartments for communication with the suction chamber. An air flow passage is provided for communication with the suction chamber. Valve mechanisms are provided in air flow paths between the respective sucking compartments and the suction chamber and are closable by a sucked air flow occurring during vacuum suction. Further, an automatic switching valve is provided in a part of the air flow passage in such a manner that the switching valve is caused to open in response to abutment against the pad supporting surface of the pad body. The air flow passage is formed in such a manner that a direction of force acting to cause the automatic switching valve to open differs from a direction of counteractive force against a spring structure that normally urges the switching valve to close.
    Type: Grant
    Filed: August 27, 1996
    Date of Patent: June 30, 1998
    Assignee: Nihon Biso Co., Ltd.
    Inventor: Tadaaki Tsukushi
  • Patent number: 5738339
    Abstract: A rope traction device has locking units that include a sheave on which a traction rope is wound. The rope traction device is adapted to be moved along with the traction rope and includes a traction rope inlet for feeding the traction rope to the sheave a traction rope outlet for feeding out the traction rope, a traction rope locking device for locking the traction rope when an increase in the speed of the traction rope is detected, and an auxiliary rope locking device provided in the vicinity of the traction rope inlet for detecting relative moving speed of an auxiliary rope suspended from the rope traction device. An interconnection is provided between the traction rope locking device and the auxiliary rope locking device in order to provide simultaneous engagement of the separate locking devices.
    Type: Grant
    Filed: March 21, 1996
    Date of Patent: April 14, 1998
    Assignee: Nihon Biso Co., Ltd.
    Inventor: Shizuka Kuryu
  • Patent number: 5685513
    Abstract: A suction chamber is provided in the rear portion of a pad body remote from an external pad supporting surface. The fore end portion of the pad body facing the pad supporting surface is divided into a plurality of sucking compartments for communication with the suction chamber. An air flow passage is provided for communication with the suction chamber. Valve mechanisms are provided in air flow paths between the respective sucking compartments and the suction chamber and are closable by a sucked air flow occurring during vacuum suction. Further, an automatic switching valve is provided in a part of the air flow passage in such a manner that the switching valve is caused to open in response to abutment against the pad supporting surface of the pad body. The air flow passage is formed in such a manner that a direction of force acting to cause the automatic switching valve to open differs from a direction of counteractive force against a spring structure that normally urges the switching valve to close.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: November 11, 1997
    Assignee: Nihon Biso Co., Ltd.
    Inventor: Tadaaki Tsukushi
  • Patent number: 5638756
    Abstract: A rope traction device includes a sheave having an annular rope receiving groove and being driven and rotated with a traction rope received in the rope receiving groove to cause the traction rope to be wound on the sheave and the rope traction device thereby moves along the traction rope. The sheave includes a pair of side walls made of an elastic material and formed integrally with the sheave for formaing the rope receiving groove. The interval between inner surfaces of the side walls in a rope holding portion is made smaller than the diameter of the traction rope by a predetermined value. The rope receiving groove may be formed in a U-shaped section, a V-shaped section or a section which is a combination of the U-shaped section and the V-shaped section.
    Type: Grant
    Filed: November 24, 1995
    Date of Patent: June 17, 1997
    Assignee: Nihon Biso Co., Ltd.
    Inventor: Shizuka Kuryu
  • Patent number: 5626081
    Abstract: A rope traction device includes a sheave having an annular rope receiving groove and being driven and rotated with a traction rope received in the rope receiving groove to cause the traction rope to be wound on the sheave and the rope traction device thereby moves along the traction rope. The sheave includes a pair of side walls made of an elastic material and formed integrally with the sheave for formaing the rope receiving groove. The interval between inner surfaces of the side walls in a rope holding portion is made smaller than the diameter of the traction rope by a predetermined value. The rope receiving groove may be formed in a U-shaped section, a V-shaped section or a section which is a combination of the U-shaped section and the V-shaped section.
    Type: Grant
    Filed: November 24, 1995
    Date of Patent: May 6, 1997
    Assignee: Nihon Biso Co. Ltd.
    Inventor: Shizuka Kuryu
  • Patent number: 5515790
    Abstract: A rope traction device includes a sheave having an annular rope receiving groove and being driven and rotated with a traction rope received in the rope receiving groove to cause the traction rope to be wound on the sheave and the rope traction device thereby moves along the traction rope. The sheave includes a pair of side walls made of an elastic material and formed integrally with the sheave for formaing the rope receiving groove. The interval between inner surfaces of the side walls in a rope holding portion is made smaller than the diameter of the traction rope by a predetermined value. The rope receiving groove may be formed in a U-shaped section, a V-shaped section or a section which is a combination of the U-shaped section and the V-shaped section.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: May 14, 1996
    Assignee: Nihon Biso Co., Ltd.
    Inventor: Shizuka Kuryu
  • Patent number: 5485645
    Abstract: An outer wall cleaning robot includes an arm pivotable about a first rotation axis and a rotational body supported by the arm for pivotal movement about a second rotation axis. The rotational body can be driven independently of a pivotal movement of the arm. To the rotational body are attached respective mounting mechanisms for a wiping squeegee and a receiving squeegee.
    Type: Grant
    Filed: July 5, 1994
    Date of Patent: January 23, 1996
    Assignee: Nihon Biso Co., Ltd.
    Inventor: Shigeru Ohtsuki
  • Patent number: 5368124
    Abstract: A device for suspending a working cage includes an arm, a swivel arm mounted rotatably horizontally to the end portion of the arm, a first sheave mounted rotatably horizontally to the arm at a location behind the end portion to which the swivel arm is mounted, and a second sheave mounted rotatably horizontally to the swivel arm in front of the center of rotation of the swivel arm. The first and second sheaves have the same diameter and are formed with at least two vertically arranged wire rope engaging grooves. At least two wire ropes fed from a winding device and attached to a working cage through these sheaves cross each other between the first sheave and the second sheave. The distance between the center of rotation of the swivel arm and the center of rotation of the first sheave is determined to be equal to the distance between the center of rotation of the swivel arm and the center of rotation of the second sheave.
    Type: Grant
    Filed: June 7, 1993
    Date of Patent: November 29, 1994
    Assignee: Nihon Biso Co., Ltd.
    Inventor: Osamu Fukutomi
  • Patent number: 5020180
    Abstract: A window-pane cleaning device for cleaning window-panes of a building is provided in a cleaning unit which is moved along a window of the building. The device includes a squeezee for cleaning a window-pane, an approaching and retraction servo device for moving the squeezee toward and away from the surface of the window-pane, an inclination angle adjusting servo device for adjusting the inclination angle of the squeezee, sensors for detecting the position and pressing force of the squeezee, and a control device responsive to detection outputs of the sensors for controlling the pressing force and inclination angle of the squeezee to predetermined values respectively at starting of cleaning, during continuous cleaning and finishing of cleaning.
    Type: Grant
    Filed: May 21, 1990
    Date of Patent: June 4, 1991
    Assignee: Nihon Biso Co., Ltd.
    Inventor: Noritaka Mimura
  • Patent number: D369009
    Type: Grant
    Filed: December 20, 1993
    Date of Patent: April 16, 1996
    Assignee: Nihon Biso Co., Ltd.
    Inventor: Osamu Fukutomi
  • Patent number: D384475
    Type: Grant
    Filed: April 15, 1996
    Date of Patent: September 30, 1997
    Assignee: Nihon Biso Co., Ltd.
    Inventor: Osamu Fukutomi
  • Patent number: D388928
    Type: Grant
    Filed: September 26, 1995
    Date of Patent: January 6, 1998
    Assignee: Nihon Biso Co., Ltd.
    Inventor: Shizuka Kuryu
  • Patent number: D388929
    Type: Grant
    Filed: December 4, 1996
    Date of Patent: January 6, 1998
    Assignee: Nihon Biso Co., Ltd.
    Inventor: Shizuka Kuryu
  • Patent number: D391034
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: February 17, 1998
    Assignee: Nihon Biso Co., Ltd.
    Inventor: Osamu Fukutomi
  • Patent number: D393133
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: March 31, 1998
    Assignee: Nihon Biso Co., Ltd.
    Inventors: Shigeru Ohtsuki, Masahiro Michikoshi