Patents Assigned to Kabushiki Kaisha Komatsu Seisakusho
  • Patent number: 6175687
    Abstract: A humidifier (5) includes upper and lower water tanks (7) and (8) supported by a support frame (6). In a space between the upper and lower water tank, a plurality of hollow yarn bodies (1) are arranged in communication with upper and lower water tanks. The hollow yarn body is constructed of a parens yarn (2) of the hollow and a thin metal wire (3) connected to the power source thereof and wound around the hollow yarn body.
    Type: Grant
    Filed: October 13, 1994
    Date of Patent: January 16, 2001
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Toshihide Imamura, Kanichi Kadotani
  • Patent number: 6046794
    Abstract: A control device for reducing a marking time in a marking device. This control device performs control operations whereby an image 20 of an area that circumscribes the entire "ABCDE" pattern of an original image is retrieved, the circumscribed area image 20 is divided into a plurality of image segments 19 of a predetermined size, and each of the plurality of image segments 21 is sequentially displayed on a mask.
    Type: Grant
    Filed: September 28, 1995
    Date of Patent: April 4, 2000
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventor: Masashi Ichihara
  • Patent number: 5934125
    Abstract: There is provided a refuging system for transfer bars of a transfer feeder of a transfer press, in which the transfer bars are driven by a transfer bar driving mechanism including an induction type servo motor. The refuging system includes a servo control for controlling the induction type servo motor, a detector for detecting an occurrence of an abnormal condition of the servo control and urgently stopping operations of a slide of a press body of the transfer press and the induction type servo motor, a detector for detecting a crank angle of the press body and discriminating an area in which the slide or a mold of the press body interfere with the transfer bar of the transfer feeder or an attachment therefor attached to the transfer bar, and a driver for driving the transfer bar to a position at which the slide and the mold of the press body do not interfere with the transfer bar of the transfer feeder and the attachment by applying an A.C.
    Type: Grant
    Filed: June 15, 1995
    Date of Patent: August 10, 1999
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventor: Yukiyoshi Takayama
  • Patent number: 5899964
    Abstract: In bending angle detection, a linear projected light image formed on the surface of a workpiece is photographed by a photographing device; the actual inclination angle of a specimen is stored as data in correspondence with the inclination angle and position of the specimen in an image; and the bending angle of the workpiece is obtained by accessing the data, with the inclination angle and position of the linear projected light image in an image produced by photographing. In main straight line extraction, main pixels are obtained from the distribution of the brightness of pixels aligned on specified axes and a main straight line is obtained from a plurality of main pixels. For extracting only a necessary straight line from an image including unnecessary straight lines, the photographing device is so disposed as to photograph a lower bender and a second straight line from the bottom end of the image is extracted.
    Type: Grant
    Filed: January 18, 1997
    Date of Patent: May 4, 1999
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Toshiyuki Ooenoki, Toshiro Otani, Shigeru Tokai
  • Patent number: 5898442
    Abstract: A display control device for displaying data stored in a video memory on a flat display such as an EL or liquid crystal display on the basis of display control signals output from a CRT control device, which comprises a memory means that allows data read and write operations to be executed simultaneously and that has a capacity to store at least one screen of display data for display on the flat display and display control means for alternately executing, in accordance with the display control signals, a first operation in which data corresponding to an upper half of the display screen are retrieved from the data stored in the video memory and sequentially output to an upper region of the display, data corresponding to the upper half of the display screen are sequentially stored in the memory means, and data corresponding to a lower half of the display screen stored in the memory means are sequentially output to a lower region of the display, and a second operation in which data corresponding to the lower hal
    Type: Grant
    Filed: August 31, 1995
    Date of Patent: April 27, 1999
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventor: Makoto Takebe
  • Patent number: 5896163
    Abstract: A laser liquid crystal marker and a method of judging deterioration of the liquid crystal make it possible to maintain high printing accuracy, ascertain the proper time for replacement of liquid crystal and, further, maintain high printing accuracy even when high speed printing is continuously performed. The marker has a temperature sensor (4), light emitting means (5), light receiving means (6), and a controller (7). The controller (7) calculates a light transmittance (Qi) from the irradiation quantity of light (R1) of the light emitting means (5) and the transmitted quantity of light (R2) received by the light receiving means (6), and adjusts the applied voltage (Vi) of the liquid crystal (2) so that the light transmittance (Qi) becomes equal to an optimum light transmittance (Qo), stored in advance.
    Type: Grant
    Filed: November 7, 1995
    Date of Patent: April 20, 1999
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Yukihiro Tsuda, Yoshinori Saito, Etsurou Sato, Yukinori Matsumura
  • Patent number: 5877270
    Abstract: A water solvent extraction degreasing method capable of reducing degreasing time without consideration of abrupt decomposition/vaporization and swelling caused by heat. An organic binder is removed from a molded product that is produced by a powder material mixed with the organic binder and this organic binder contains at least one water-soluble organic compound and at least one water-insoluble thermoplastic resin. The degreasing step of this method includes a water solvent extraction step for extracting the water-soluble organic compound from the organic binder contained in the molded product, using water as a solvent.
    Type: Grant
    Filed: January 2, 1997
    Date of Patent: March 2, 1999
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Takemori Takayama, Yoshitaka Ohyama, Masato Miyake, Katsuyoshi Saito, Hiroshi Ono
  • Patent number: 5875766
    Abstract: Disclosed is a supercharging device for a vehicle engine, for use in construction machines, etc., that has high acceleration performance, that is compactly made but provides high output, and that provides good engine braking efficiency, and a method for controlling such a supercharging device. A vehicle engine of the present invention, on which is mounted a mechanical supercharger that is driven by mechanical means using an output of the engine, comprises: a differential planetary gear device (10), which is connected to the vehicle engine (1) and which has differential limiting means (L) for distributing power that is produced by the vehicle engine for driving a mechanical supercharger (40) and for driving; and the mechanical supercharger (40), which is to be driven by the differential planetary gear device (10).
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: March 2, 1999
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventor: Godo Ozawa
  • Patent number: 5854379
    Abstract: A low-cost thermal decomposition degreasing method capable of drastically reducing the time required for a degreasing process which involves heating, vaporization and thermal decomposition, while assuring the shape retention property of an injection molded product during degreasing. The degreasing process comprises: (i) a first step wherein a molded product placed under a reduced pressure less than or equal to atmospheric pressure is heated at a temperature lower than the melting point of a thermoplastic binder so that the thermoplastic binder partially evaporates by 5 wt % or more, and then the molded product is further heated at a temperature lower than higher one of the melting points of a more volatile organic compound and a thermoplastic resin whereby the thermoplastic binder further evaporates by 10 wt % or more, and wherein the final temperature is set to 200.degree. C.
    Type: Grant
    Filed: January 2, 1997
    Date of Patent: December 29, 1998
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Takemori Takayama, Yoshitaka Ohyama, Kazuo Okamura, Masato Miyake, Katsuyoshi Saito, Hiroshi Ono
  • Patent number: 5845678
    Abstract: A direction control valve is formed by providing a main spool for establishing and blocking communication between an inlet port, first and second actuator ports and first and second tank ports. A pressure compensation valve comprising a check valve portion and pressure reduction portion is provided for compensating the pressurized fluid with a load pressure and supplying it to the inlet port. A plurality of valve blocks are connected to each other with respective first and second tank ports and respective pump ports in fluid communication. A pump port of one of the valve blocks is connected to a main inlet port, and a tank port of one of the valve blocks is connected to a main tank port. Thus, a hydraulic circuit for distributing a pressurized fluid from a single hydraulic pump to a plurality of actuators is provided.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: December 8, 1998
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Kazuyoshi Ishihama, Kazunori Ikei, Kazuo Uehara
  • Patent number: 5845895
    Abstract: This invention relates to a liquid sealed rubber mount capable of displaying an excellent vibration isolating effect in intermediate and high frequency ranges, having a vibration isolating effect with no resonation occurring with respect to even the impact vibration of a wide frequency band, capable of obtaining a large attenuation force for large amplitude vibration, and capable of preventing the occurrence of lateral vibration. Accordingly, a case (11, 51) and a guide shaft (14) are joined to each other by a cylindrical rubber mounting element (17, 58), and a high attenuation liquid (21, 59) is sealed in a liquid sealing chamber housing (20, 53) fixed to a lower end of the case (11, 51), a damper plate (23, 28, 55) being held on a lower end of the guide shaft (14). An elastic member (24, 26, 34, 35, 36a, 36b, 39, 56), which is deformed finely by the distance a due to the resistance of the high attenuation liquid (21, 59) when vertical vibration occurs, is fixed the damper plate (23, 28, 55).
    Type: Grant
    Filed: March 8, 1996
    Date of Patent: December 8, 1998
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Kuniaki Nakada, Hikosaburou Hiraki
  • Patent number: 5844556
    Abstract: Besides fixed display element information for merely displaying a fixed screen, variable display element information for variably displaying a variable display element whose display content changes, input element information representing the relationship of correspondence between the input means and an operation switch contained in a relevant component, and the operation program information for operating the relevant component as required, which are necessary for the relevant component to completely function as a component, are capable of being set and registered with respect to component data. In addition, the set and registered component is allowed to be handled in a component data unit when user screen data is generated. Accordingly, if the components are registered in a library, the possibility of use by a third party can be drastically increased, and the number of work steps during the screen generation by the user can be drastically decreased.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: December 1, 1998
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Yukitaka Takitani, Tetsuya Nishiki, Masahiro Sato, Kazuaki Date, Jun Aoki, Hiroshi Kitano, Masaharu Kakizoe, Shinji Sohma
  • Patent number: 5842386
    Abstract: There is provided a locking device for a transfer feeder which can certainly lock transfer bars at desired positions so that the transfer bars and their driving portions will never initiate motion unexpectedly. The locking device includes a plurality of engaging plates secured to a feed carrier and an equalizer bar provided in lifting/clamping mechanism and formed with a plurality of engaging holes respectively aligned in longitudinal direction with regular intervals, and a plurality of locking pins secured on a plurality of portions of a press main body in opposition to the engaging plates and movable in axial and lateral directions by means of driving devices for engagement with respective one of the engaging holes.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: December 1, 1998
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Yuji Hirota, Toshihiro Tanaka, Nobuyuki Kaji
  • Patent number: 5823369
    Abstract: A device which comprises first calculating means for calculating a lower-limit time Tmin of swiveling control on the basis of dynamic characteristics of a swiveling angular velocity control system, second calculating means for determining a swinging period T of the suspended load, third calculating means for selecting a smallest natural number n for which nT.gtoreq.Tmin, and braking and stopping control means for braking and stopping the rotary body with an angular acceleration .alpha. indicated by the equation .alpha.=-.OMEGA.O/nT (where .OMEGA.O is the swiveling angular velocity of the rotary body immediately prior to the initiation of automatic swiveling stopping control), and which eliminates influences of elastic vibrations so as to insure an excellent stopping accuracy.
    Type: Grant
    Filed: March 11, 1996
    Date of Patent: October 20, 1998
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventor: Kazunori Kuromoto
  • Patent number: 5802788
    Abstract: A fixing device for a tensioning member of a prestressed concrete may unimly act holding force for the tensioning member on the overall peripheral surface of the tensioning member mating with the wedge. The device includes a stationary grip through which the tensioning member extends, a wedge press fitted to the grip with holding the tensioning member for fixing the tensioning member relative to the grip under a given tension, and a buffer member disposed between the tensioning member and the wedge, the buffer member having both elasticity and plasticity.
    Type: Grant
    Filed: February 7, 1995
    Date of Patent: September 8, 1998
    Assignee: Kabushiki Kaisha Komatsu Seisakusho Komatsu Plastics Industry Co., Ltd.
    Inventors: Nobuyuki Ozawa, Masao Kikuchi, Manabu Sotooka, Junji Hosokawa
  • Patent number: 5802766
    Abstract: A method and apparatus is provided for controlling the automatic opening and closing of a window of the driver's cab of a working vehicle in which the automatic opening and closing operations and locking operation of the window are carried out smoothly by detecting the opening and closing stop positions of the window and the operation stop positions of the locking units without fail and with high safety.
    Type: Grant
    Filed: January 23, 1996
    Date of Patent: September 8, 1998
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Masamichi Miyazaki, Yoshihiro Nagata
  • Patent number: 5793638
    Abstract: An object of this invention is to provide efficient operations of a production line for producing finished products by performing working in which a variety of parts are selectively combined with one another during a plurality of processes. A semi-finished product produced in processes (1 and 2) is assigned to an article number; parts serving as raw materials, a supplier of the semi-finished product, or a destination of the semi-finished product or part are specified; and these specified data are distributed and transmitted from a higher level system (4) to respective control systems (5, 6, 7 and 8) as planned data to be executed and planned data to be received.
    Type: Grant
    Filed: March 18, 1996
    Date of Patent: August 11, 1998
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Yoshihiro Yao, Nobuo Miyamoto, Hideyuki Wakai
  • Patent number: 5784885
    Abstract: A direction control valve is formed by providing a main spool for establishing and blocking communication between an inlet port, first and second actuator ports and first and second tank ports. A pressure compensation valve comprising a check valve portion and pressure reduction portions is provided for compensating the pressurized fluid with a load pressure and supplying it to the inlet port. A plurality of valve blocks are connected with communicating respective first and second tank ports and respective pump ports, and either one of pump port is connected to a main port. In either case, the pump port is connected to the main input port to any one of the first and second tank ports is connected to the main tank port.
    Type: Grant
    Filed: February 13, 1996
    Date of Patent: July 28, 1998
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Kazuyoshi Ishihama, Kazunori Ikei, Kazuo Uehara
  • Patent number: 5785910
    Abstract: The present invention is to improve a laminate molding method and a laminate-molding apparatus for manufacturing molded products that have an external appearance of excellent quality. For this purpose, according to a molding method, by which a mold clamping device (3) laminates sheet of skin material (Mm) and a core resin (200), the tension of the sheet of skin material Mm, which is inserted into a cavity (9) between a clamped fixed metal mold (11) and a clamped movable metal mold (12) and is laminated by the movable metal mold (12), is varied, continuously or in a stepped manner, in consonance with the insertion amount of the sheet of skin material (Mm).
    Type: Grant
    Filed: October 30, 1995
    Date of Patent: July 28, 1998
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Katsutoshi Sakashita, Tetsuzi Funahashi, Akira Yokota, Masayuki Oishi
  • Patent number: 5784308
    Abstract: For arithmetically combining the values of two numbers, for example adding and subtracting, comprising a data deletion system for deleting values from input data and outputting the result. The system has a deletion number detection apparatus for finding a value on the basis of input data and output data, wherein an output data number setting device sets the bits of an output data number to be all "1" in logical value prior to sending that number to a down counter which subtracts the output number from the input number for the result.
    Type: Grant
    Filed: November 18, 1996
    Date of Patent: July 21, 1998
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Makoto Takebe, Masao Hagiwara