Patents Assigned to Nippon Yusoki Co., Ltd.
  • Publication number: 20030156934
    Abstract: A forklift having a pallet lock device. On an upper face of a top end of a lock bar to lock a pallet, a tapered portion is disposed. When a fork is inserted into the pallet, the tapered portion comes into contact with an end face of the pallet and the lock bar rotates downward. When a landing sensor is turned on by a magnet disposed on the lock bar, the lock bar is immediately driven and the locking operation is started. Then, the top end of the lock bar pushes or comes into pressure contact with an upper face of a lower deck board of the pallet, and the pallet is locked.
    Type: Application
    Filed: December 13, 2002
    Publication date: August 21, 2003
    Applicant: NIPPON YUSOKI CO., LTD.
    Inventors: Tutomu Fujita, Yasunobu Tomiyama, Kazumasa Kokura
  • Publication number: 20030152451
    Abstract: A reach type forklift truck includes a rotation sensor interposed between a load wheel and a load wheel shaft on which the load wheel is provided. A signal line for transmitting a detected signal of the rotation sensor is inserted in a guide groove formed in the load wheel shaft that extends along an axial direction thereof. The signal line is led out from a reach rail side of the load wheel.
    Type: Application
    Filed: October 1, 2002
    Publication date: August 14, 2003
    Applicant: NIPPON YUSOKI CO., LTD.
    Inventors: Kazuhiro Nagata, Koji Yokoyama, Youich Hiraki
  • Publication number: 20030149513
    Abstract: An information display apparatus for a vehicle including: a key switch for starting the vehicle; a setting operation portion for inputting and setting a plurality of start-up inspection items to be inspected as to operations of the vehicle before starting work; a display portion for displaying the start-up inspection items set by the setting operation portion; and a control portion which controls the display portion in response to turning on of the key switch thereby to display the startup inspection items on the display portion.
    Type: Application
    Filed: September 18, 2002
    Publication date: August 7, 2003
    Applicant: NIPPON YUSOKI CO., LTD.
    Inventor: Hajime Muragishi
  • Patent number: 6542801
    Abstract: A power steering system according to the invention includes a running speed detector 1 for detecting the running speed of a vehicle, an operating speed detector 11 for detecting the operating speed of a steering wheel which is the turning speed of the steering wheel, a controller 2 for calculating a target steering speed which is a target turning speed for a steering mechanism 14 based on the operating speed so detected and comparing an actual steering speed which is an actual turning speed by the steering mechanism 14 with the target steering speed for calculation of a deviation and a driving device 15 for driving the steering mechanism 14 in response to the deviation so calculated, the controller being configured to change a set ratio of the target steering speed to the operating speed so as to increase or decrease in response to the running speed of the vehicle.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: April 1, 2003
    Assignee: Nippon Yusoki Co., Ltd.
    Inventor: Kazuhito Kawashima
  • Publication number: 20030047389
    Abstract: In a lift truck of a type that, using a brake controller 20, a traveling motor 3 can be braked by an electromagnetic brake 17, the brake controller 20, when it detects the brake operation of a brake operation device, not only actuates the electromagnetic brake 17 but also detects the truck body weight and traveling speed of the lift truck, thereby electrically braking the traveling motor 3 in such a manner that the electric brake force can be increased or decreased in correspondence to whether the thus-detected truck body weight is heavy or light as well as the electric brake force can be increased or decreased in correspondence to whether the thus-detected traveling speed is high or low.
    Type: Application
    Filed: August 5, 2002
    Publication date: March 13, 2003
    Applicant: NIPPON YUSOKI CO., LTD.
    Inventor: Koji Yokoyama
  • Publication number: 20030024132
    Abstract: A cargo handling vehicle comprises cargo carriers 21, a lift unit 1, a vehicle main body 24, and a running system 3, and the cargo handling vehicle further comprises a lift height detecting section 2 for detecting the vertical position of the cargo carriers 21, a traveling distance measuring section 4 for measuring a forward distance S1 covered by the vehicle main body 24 which starts its forward movement after the cargo carriers 21 are started to be raised and a rearward distance S2 covered by the vehicle main body 24 which starts its rearward movement after having completed its forward movement, and a movement control section 9 for prohibiting the lowering movement of the cargo carriers 21 until a rearward distance to be covered by the vehicle main body 24 which starts its rearward movement in a state in which the vertical position H2 of the raised cargo carriers 21 exceeds a preset reference height H1 becomes equal to or greater than the forward distance covered by the vehicle main body 24.
    Type: Application
    Filed: June 14, 2001
    Publication date: February 6, 2003
    Applicant: NIPPON YUSOKI CO., LTD.
    Inventors: Kazumasa Kokura, Tsutomu Fujita, Toshihiro Suzuki
  • Publication number: 20020176771
    Abstract: A forklift has a travelling carriage, a straddle arm disposed on the travelling carriage, a mast disposed on the straddle arm to be reciprocally movable in a horizontal direction, a fork disposed on the mast to be movable up and downm, and a cover disposed on the travelling carriage. When the mast is in a reach-in operation, the cover covers at least an upper side of an article supported by the fork.
    Type: Application
    Filed: May 23, 2002
    Publication date: November 28, 2002
    Applicant: NIPPON YUSOKI CO., LTD.
    Inventors: Hideki Ando, Toshio Wada, Kazuhiro Fujikawa, Tomohiro Moriyama
  • Publication number: 20020089668
    Abstract: There is provided a forklift in which a mast upstands in front of the body of the forklift, a lift bracket is mounted on the mast in a vertically movable manner, and a fork is engaged with the lift bracket, wherein a laser light source which illuminates an area in front of the fork is attached to the lift bracket or the fork, and a light beam emitted from the laser light source is formed into a shape which laterally elongates, via a lens.
    Type: Application
    Filed: March 8, 2002
    Publication date: July 11, 2002
    Applicant: NIPPON YUSOKI CO., LTD.
    Inventor: Kazumasa Kokura
  • Publication number: 20020087242
    Abstract: A power steering system according to the invention includes a running speed detector 1 for detecting the running speed of a vehicle, an operating speed detector 11 for detecting the operating speed of a steering wheel which is the turning speed of the steering wheel, a controller 2 for calculating a target steering speed which is a target turning speed for a steering mechanism 14 based on the operating speed so detected and comparing an actual steering speed which is an actual turning speed by the steering mechanism 14 with the target steering speed for calculation of a deviation and a driving device 15 for driving the steering mechanism 14 in response to the deviation so calculated, the controller being configured to change a set ratio of the target steering speed to the operating speed so as to increase or decrease in response to the running speed of the vehicle.
    Type: Application
    Filed: December 17, 2001
    Publication date: July 4, 2002
    Applicant: NIPPON YUSOKI CO., LTD.
    Inventor: Kazuhito Kawashima
  • Patent number: 6402454
    Abstract: A forklift, in which, if a synchronous mode change-over switch is depressed, a forward/backward moving lever is switched over to the backward moving side, and a throttle pedal is stepped down, then a pusher is moved forward by a pusher cylinder in synchronization with the backward movement of the vehicle body of the forklift to thereby push out baggage carried on a fork therefrom. An oil pressure circuit connects together a pusher cylinder and an oil pressure pump. A hand-operated switch valve 21 is disposed in the oil pressure circuit. A valve full-open switch 22 opposes a projection portion 25 provided on and projected from a pusher lever 12 which is used to switch the state of the hand-operated switch valve 21. When the pusher lever 12 fully opens the hand-operated switch valve 21, the projection portion 25 contacts with the valve full-open switch 22 to thereby allow the valve full-open switch 22 to issue a detect signal to a control part of the forklift.
    Type: Grant
    Filed: October 6, 1999
    Date of Patent: June 11, 2002
    Assignee: Nippon Yusoki Co., Ltd.
    Inventors: Yasuyuki Yamaguchi, Sanpei Kikuchi, Haruhiko Kakitsubata, Takahiro Kitao, Hiroshi Minami, Shinobu Tanaka
  • Publication number: 20020069005
    Abstract: Separately from a normal running mode, there is provided a turning mode in which a body 1 is allowed to turn. In the turning mode, road wheels 5a, 5b and a driving wheel 8 are set such that the wheels are oriented so as to follow along a circumference R1 to R3 that would be formed about a distal end B of a fork arm 2b. As a result of this, the body 1 is allowed to turn about the distal end B of the fork arm 2b, whereby the body 1 can simply be positioned so as to confront the front of a pallet 40.
    Type: Application
    Filed: November 27, 2001
    Publication date: June 6, 2002
    Applicant: NIPPON YUSOKI CO., LTD.
    Inventor: Kazumasa Kokura
  • Patent number: 6388748
    Abstract: There is provided a forklift in which a mast upstands in front of the body of the forklift, a lift bracket is mounted on the mast in a vertically movable manner, and a fork is engaged with the lift bracket, wherein a laser light source which illuminates an area in front of the fork is attached to the lift bracket or the fork, and a light beam emitted from the laser light source is formed into a shape which laterally elongates, via a lens.
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: May 14, 2002
    Assignee: Nippon Yusoki Co., Ltd.
    Inventor: Kazumasa Kokura
  • Publication number: 20010031196
    Abstract: In a load handling apparatus for a counterbalance type forklift, a tiltable operating lever is disposed on a body of the forklift, a mast which is tiltable in an anteroposterior direction is disposed on the forklift, a liftable fork is disposed on the mast, and a tilting speed of the mast and lifting and lowering speeds of the fork are controlled by a degree of opening of a solenoid proportional control valve, the degree of opening being proportional to a tilting angle of the operating lever, wherein a number of the operating lever disposed on the body is one, a switch is attached to the operating lever, and the apparatus comprises a controller which performs controls in the following manner: when the operating lever is tilted under a state where the switch is operated, a signal for tilting the mast is output; when only the operating lever is operated, a signal for lifting or lowering the fork is output; and, when the switch is changed to a inactive condition under a state where the operating lever is in an t
    Type: Application
    Filed: June 19, 2001
    Publication date: October 18, 2001
    Applicant: NIPPON YUSOKI CO., LTD.
    Inventor: Shinobu Tanaka
  • Patent number: 6273669
    Abstract: In a load handling apparatus for a counterbalance type forklift, action and speed conditions of tilting a mast and lifting and lowering a fork are operated by use of a single operating lever and a single switch attached to the operating lever. Also, a controller is provided that prevents simultaneous operation of action conditions. The controller includes an inhibiting circuit that halts all action conditions when the operational state of the switch is changed during operation, and thus, unintended action conditions due to erroneous operation of the switch are prevented.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: August 14, 2001
    Assignee: Nippon Yusoki Co., Ltd.
    Inventor: Shinobu Tanaka
  • Patent number: 6246198
    Abstract: In a current-limiting setting mode, with, the motor locked and with the accelerator 4 operated fully, the detection current value of the motor provided by a current sensor CT is displayed. The operator, while observing the display, operates up/down push buttons 13 and 14 until the detection current value reaches a predetermined current-limiting value, and a duty of application of current is stored. This feature makes it unnecessary to additionarily provide a current meter, and makes it possible for only one person to perform the adjusting operation.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: June 12, 2001
    Assignee: Nippon Yusoki Co., Ltd.
    Inventors: Noriaki Makino, Tadashi Banba
  • Patent number: 5325935
    Abstract: A reach forklift comprises: a forklift body; left and right straddle arms; a pair of load wheels supported in a steerable manner in the vicinity of front ends of the left and right straddle arms, respectively; driving means for steering the load wheels, the load wheels and the driving means being housed in the straddle arms; a drive wheel disposed in a rear portion of the forklift body; and a steering wheel for steering the drive wheel; steering angle detecting means for detecting steering angles of the left and right load wheels and the drive wheel.
    Type: Grant
    Filed: May 18, 1993
    Date of Patent: July 5, 1994
    Assignee: Nippon Yusoki Co., Ltd.
    Inventors: Shigeru Hirooka, Ikuya Katanaya, Koji Orita, Shinobu Tanaka
  • Patent number: 4994973
    Abstract: A control system for industrial use vehicles such as battery powered fork lifts in which regenerative energy is saved when the direction of travel is reversed. The control system functions to moderate the current drain on the battery. The control system comprising: a travel signal input means for generating an output signal from a travel accelerator, a cargo-handling signal input means for generating a cargo-handling signal, a monitor voltage input means for detecting a voltage at each of a plurality of monitor points and for outputting a detected signal, a sensor input means for generating an output signal from each sensor, monitor input means for generating an output signal from each monitor, and a microprocessor controller for receiving the output signals of the respective means and for outputting predetermined control signals.
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: February 19, 1991
    Assignee: Nippon Yusoki Co., Ltd.
    Inventors: Noriaki Makino, Sampei Kikuchi
  • Patent number: 4566032
    Abstract: An optically guided, unmanned, load transporting vehicle, such as a fork-lift truck, includes an electric camera, such as an industrial television camera, and a controller for controlling the automatic running apparatus of the vehicle. Two reflectors are disposed in front of the camera so that the camera receives light from remote and near visual fields. A guide belt laid on floor for guiding the vehicle is formed with various bar codes representing halt, acceleration, deceleration, etc.
    Type: Grant
    Filed: November 10, 1983
    Date of Patent: January 21, 1986
    Assignees: Nippon Yusoki Co., Ltd., Dac Engineering Co., Ltd.
    Inventors: Shigeru Hirooka, Shuichi Maeda, Shigehiro Yamamoto, Toshihiko Yamaguchi