Patents by Inventor Kazufumi Naito

Kazufumi Naito 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: 20150308886
    Abstract: A platform scale provided with an enclosure for surrounding the sides of the platform scale, wherein: the platform scale comprises shock-absorbing members that extend outward at multiple places of the feet, which support the main body of the platform scale on a base; the enclosure is configured from only side walls that surround the sides of the platform scale; the height of the side walls placed on the base is set to be lower than the height of the upper surface of the weighing tray of the platform scale; and the side walls set on the base do not touch portions of the platform scale other than the shock-absorbing members.
    Type: Application
    Filed: August 26, 2013
    Publication date: October 29, 2015
    Applicant: SHINKO DENSHI CO., LTD.
    Inventors: Naoya Shinozaki, Kazufumi Naito, Tsubasa Takanami
  • Publication number: 20140374173
    Abstract: The coil that is installed on a lever is obtained from a flat coil, which is wound flat so as to generate upper and lower winding regions that are parallel to the direction that the lever extends along a vertical surface that is parallel to the direction that the lever extends. The magnetic circuit is provided with multiple plate-shaped permanent magnets that face the upper and lower winding regions of the flat coil and are magnetized in a direction that is orthogonal to the vertical surface, and yoke members that induce lines of magnetic force of the permanent magnets so that a magnetic flux of an orientation that is orthogonal to the vertical surface is generated.
    Type: Application
    Filed: February 26, 2013
    Publication date: December 25, 2014
    Applicant: SHINKO DENSHI CO., LTD.
    Inventors: Kazufumi Naito, Kouzou Terunuma, Kazushi Fujihara, Masaru Ikeshima, Shinichirou Ishida, Yoshiyuki Ishihara, Koji Fujiwara, Yasuhito Takahashi, Hisato Sumitomo
  • Patent number: 8907232
    Abstract: A platform scale is provided including a plurality of component force damping devices. The platform scale for weighing an object by supporting a support member that supports the object by a plurality of load detection units includes at least four component force damping devices, each comprising a plurality of needle bearings disposed in parallel and a pair of opposed plates for sandwiching the the needle bearings, so that the pair of plates make a relative movement in a direction of the arrangement of the needle bearings. The four component force damping devices are in contact with the support member at four locations that form a rectangle. Directions of the relative movement of any two component force damping devices located at the same side of the rectangle are different, while directions of the relative movement of any two component force damping devices at diagonal locations of the rectangle are identical.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: December 9, 2014
    Assignee: Shinko Denshi Co., Ltd.
    Inventors: Kazufumi Naito, Hiroshi Suzawa
  • Patent number: 8853568
    Abstract: (Problem) To provide a high precision platform scale (Means to Solve the Problem) A platform scale for weighing an object to be weighed by supporting it by a plurality of load detection sections, wherein the load detection section comprises a load sensor 40 having a block body 42 for transmitting an applied load to a tuning fork vibrator 41 coupled to the block body 42 by reducing the load, a circuit board having fabricated thereon circuitry for converting a signal from the tuning fork vibrator into a digital signal and a sensor case 33 for accommodating the load sensor and the circuit board. The sensor case 33 is made by casting stainless material by a lost wax process and is directly coupled to parallel base frames 20 for maintaining the distance between the base frames. The sensor case has sufficient mechanical strength and also acts as a structural member for the base frames, thereby reducing the number of components and the height of a weighing table.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: October 7, 2014
    Assignee: Shinko Denshi Co., Ltd.
    Inventors: Naoya Shinozaki, Shinichiro Ishida, Kazufumi Naito
  • Patent number: 8198554
    Abstract: A load cell unit which can satisfactorily measure the weight of a measured object if ambient temperature changes, and a weight checker and an electric balance using the load cell unit, are provided. A strain generating element includes plural strain generating portions. Each of strain gauges is a gauge of a temperature/sensitivity compensated type and is placed in a position on a corresponding strain generating portion. A bridge circuit includes the strain gauges. A zero compensation element compensates the zero of the bridge circuit in accordance with the temperature of the strain generating element, to roughly correct an output of the bridge circuit. A thermal sensitive resistor is a temperature sensor for detecting the temperature of the strain generating element. The zero compensation element and the thermal sensitive resistor are provided on a thick portion interposed between adjacent strain generating portions. A signal processor minutely corrects a roughly-corrected output of the bridge circuit.
    Type: Grant
    Filed: August 24, 2007
    Date of Patent: June 12, 2012
    Assignee: Ishida Co., Ltd.
    Inventors: Kazufumi Naito, Shoko Tajiri, Shinji Takeichi
  • Publication number: 20120085586
    Abstract: The present invention is to provide a platform scale including a plurality of component force damping devices assembled therein for making high precision weighing. The platform scale for weighing an object to be weighed by supporting a support member that supports the object to be weighed by a plurality of load detection units 301,302 includes at least four component force damping devices 321˜324, each comprising an arrangement of a plurality of needle bearings disposed in parallel and a pair of opposed plates for sandwiching the arrangement of the needle bearings 63 so that the pair of plates make a relative movement in a direction of the arrangement of the needle bearings. The four component force damping devices 321˜324 are in contact with the support member at four locations that form a rectangle.
    Type: Application
    Filed: June 23, 2010
    Publication date: April 12, 2012
    Applicant: SHINKO DENSHI CO., LTD.
    Inventors: Kazufumi Naito, Hiroshi Suzawa
  • Publication number: 20120080241
    Abstract: A platform scale for weighing an object to be weighed by supporting it by a plurality of load detection sections, wherein the load detection section comprises a load sensor 40 having a block body 42 for transmitting an applied load to a tuning fork vibrator 41 coupled to the block body 42 by reducing the load, a circuit board having fabricated thereon circuitry for converting a signal from the tuning fork vibrator into a digital signal and a sensor case 33 for accommodating the load sensor and the circuit board. The sensor case 33 is made by casting stainless material by a lost wax process and is directly coupled to parallel base frames 20 for maintaining the distance between the base frames. The sensor case has sufficient mechanical strength and also acts as a structural member for the base frames, thereby reducing the number of components and the height of a weighing table.
    Type: Application
    Filed: June 23, 2010
    Publication date: April 5, 2012
    Applicant: SHINKO DENSHI CO., LTD.
    Inventors: Naoya Shinozaki, Shinichiro Ishida, Kazufumi Naito
  • Publication number: 20090255736
    Abstract: A load cell unit which can satisfactorily measure the weight of a measured object if ambient temperature changes, and a weight checker and an electric balance using the load cell unit, are provided. A strain generating element includes plural strain generating portions. Each of strain gauges is a gauge of a temperature/sensitivity compensated type and is placed in a position on a corresponding strain generating portion. A bridge circuit includes the strain gauges. A zero compensation element compensates the zero of the bridge circuit in accordance with the temperature of the strain generating element, to roughly correct an output of the bridge circuit. A thermal sensitive resistor is a temperature sensor for detecting the temperature of the strain generating element. The zero compensation element and the thermal sensitive resistor are provided on a thick portion interposed between adjacent strain generating portions. A signal processor minutely corrects a roughly-corrected output of the bridge circuit.
    Type: Application
    Filed: August 24, 2007
    Publication date: October 15, 2009
    Inventors: Kazufumi Naito, Shoko Tajiri, Shinji Takeichi
  • Publication number: 20060031747
    Abstract: An input/output screen creating system, which creates an input/output screen to be used in a work processing system, has an object storage unit, an input/output screen creating unit, a grid display unit, and an input/output screen storage unit. The object storage unit stores a plurality of objects capable of being arranged on the input/output screen therein. The input/output screen creating unit displays a form for creating and editing the input/output screen, and accepts an input of an arrangement of the objects stored in the object on the form. The grid display unit superposes and arranges grids having the size for a two-byte or one-byte character on a canvas to be a job area on the input/output screen provided to the form. The input/output screen storage unit stores the input/output screen having the objects arranged with them being related with the grids therein.
    Type: Application
    Filed: December 28, 2004
    Publication date: February 9, 2006
    Inventors: Shigefumi Wada, Shigeru Nakayama, Shigekazu Kurozu, Takeshi Haramoto, Takahiro Suzuki, Tatsuhito Ryu, Kazufumi Naito
  • Patent number: 6684487
    Abstract: A load cell is constructed with several strain gauges. Each of the strain gauges are formed with a meandering conductive portion on a substrate or base member. Portions of the meandering conductive layer defines a predetermined tab ratio. The base member is formed with a predetermined amount of filler and the tab ratio is pre-determined such that the creep characteristic of the strain gauge is substantially zero in a load cell having a generally low rated load.
    Type: Grant
    Filed: October 12, 2001
    Date of Patent: February 3, 2004
    Assignee: Ishida Co.
    Inventors: Kazufumi Naito, Kenji Imai, Matsuo Zama, Naoki Sasaki
  • Patent number: 6545230
    Abstract: A combinatorial weighing or counting apparatus having a dispensing feeder and weighing hoppers is provided to achieve superior article transport by suitably controlling the operating parameter of the dispensing feeder. The combinatorial weighing or counting apparatus of the present invention includes a dispensing feeder 4, a plurality of weighing hoppers 7, a weighing device 11, and a DF operating parameter calculating unit 22. Articles to be weighed are supplied to the dispensing feeder 4. From the dispensing feeder 4 the articles are supplied to the weighing hoppers 7. The weighing device 11 is a means for detecting the weight of the articles on the dispensing feeder 4. The DF operating parameter calculating unit 22 is a means for controlling the amount of articles that are discharged from the dispensing feeder 4, based on weight information from the weighing device 11.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: April 8, 2003
    Assignee: Ishida Co., Ltd.
    Inventors: Yutaka Tamai, Kazufumi Naito, Toshiro Ono, Hirofumi Yamamori
  • Publication number: 20020083578
    Abstract: A load cell is constructed with several strain gauges. Each of the strain gauges are formed with a meandering conductive portion on a substrate or base member. Portions of the meandering conductive layer defines a predetermined tab ratio. The base member is formed with a predetermined amount of filler and the tab ratio is pre-determined such that the creep characteristic of the strain gauge is substantially zero in a load cell having a generally low rated load.
    Type: Application
    Filed: October 12, 2001
    Publication date: July 4, 2002
    Inventors: Kazufumi Naito, Kenji Imai, Matsuo Zama, Naoki Sasaki
  • Publication number: 20010020553
    Abstract: A combinatorial weighing or counting apparatus having a dispensing feeder and weighing hoppers is provided to achieve superior article transport by suitably controlling the operating parameter of the dispensing feeder. The combinatorial weighing or counting apparatus of the present invention includes a dispensing feeder 4, a plurality of weighing hoppers 7, a weighing device 11, and a DF operating parameter calculating unit 22. Articles to be weighed are supplied to the dispensing feeder 4. From the dispensing feeder 4 the articles are supplied to the weighing hoppers 7. The weighing device 11 is a means for detecting the weight of the articles on the dispensing feeder 4. The DF operating parameter calculating unit 22 is a means for controlling the amount of articles that are discharged from the dispensing feeder 4, based on weight information from the weighing device 11.
    Type: Application
    Filed: March 9, 2001
    Publication date: September 13, 2001
    Inventors: Yutaka Tamai, Kazufumi Naito, Toshiro Ono, Hirofumi Yamamori
  • Patent number: 6034334
    Abstract: A weighing machine, such as a combinational weighing machine, has scale cells and a plurality of dummy cells installed on the same floor. The scale cells output weight signals corresponding to the weights of objects being loaded. The mode of vibrations of the floor is detected from dummy signals from the dummy cells, vertical displacements of the floor at the positions of the scale cells are calculated, and their effects are eliminated from the weight signals. Those of the scale cells not selected after a cycle of combinational calculations can be used as dummy cells in the next cycle. A memory device may be provided to store preferred combinations of such scale cells not selected that may be used for this purpose. Effects of the floor vibrations can be eliminated more accurately if the differences in sensitivity among the cells due to physical characteristics of the individual cells and/or due to the different loads on them can be taken into account either by a feedback calculation or by a formula.
    Type: Grant
    Filed: April 12, 1995
    Date of Patent: March 7, 2000
    Assignee: Ishida Co. Ltd.
    Inventors: Yoshihiro Nakamura, Yukio Wakasa, Kazufumi Naito, Hidekatsu Tokumaru, Shoko Tajiri
  • Patent number: 6013879
    Abstract: A multi-point cell type weighing machine has a plural number of scale cells set on a floor to support a table and to output weight signals indicative of weights measured thereby of a target object placed on the table. One or more floor vibration detecting cells are set on the same floor and output floor vibration detection signals indicative of the vibrations of the floor. The weight signals are corrected on the basis of vibration components of the floor vibration detection signals. A standard weight is placed at a larger plural number of places on the table than there are scale cells and output sensitivity ratios among the scale cells are calculated from outputted values from the scale cells, and the weight signals are further corrected on the basis of the output sensitivity ratios. These weight signals are added together and the weight of the target object is obtained from the added signal.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: January 11, 2000
    Assignee: Ishida Co., Ltd.
    Inventors: Yoshihiro Nakamura, Yukio Wakasa, Kazufumi Naito
  • Patent number: 5929390
    Abstract: A load cell includes a strain inducing element having a fixed rigid body fixedly secured to a base support, and a plurality of transverse beams spaced one above the other and connecting the fixed and movable rigid bodies together. Each of the transverse beams has first and second strain generating areas defined therein in spaced relation to each other at respective locations adjacent the fixed and movable rigid bodies. A bridge circuit for outputting a load signal of a magnitude proportional to strains generated at the strain generating areas includes strain gauges for detecting the strains generated at the strain generating areas, adjusting elements for adjusting a balance of the bridge circuit, and lines connecting them together. A circuit portion of the bridge circuit which includes at least the strain gauge and some of the lines is formed in a predetermined pattern on one surface of the strain inducing element so as to straddle between the first and second strain generating areas.
    Type: Grant
    Filed: September 12, 1995
    Date of Patent: July 27, 1999
    Assignee: Ishida Co., Ltd.
    Inventors: Kazufumi Naito, Takao Suzuki, Taro Hijikata
  • Patent number: 5756938
    Abstract: A weight measuring apparatus which comprises an input signal switching circuit for selectively outputting analog signals input to a plurality of channels, analog-to-digital converter for converting an analog signal output from the input signal switching circuit into a digital signal, and a digital signal processing circuit for filtering a digital quantity output from the analog-to-digital converter for each channel, or filtering digital quantities from a plurality of channels after these digital quantities have been combined together.
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: May 26, 1998
    Assignee: Ishida Scales Mfg. Co., Ltd.
    Inventors: Katsuaki Kono, Kazufumi Naito
  • Patent number: 5756943
    Abstract: A load cell for use in detecting a load imposed thereon which includes a body (30) in which strain is induced in proportion to the imposed load, and a strain sensor (40) for detecting the strain induced in the body (30). The body (30) is a plate member having a longitudinal axis (X) and the strain sensor (40) is mounted on the body (30). The body (30) has an opening (31) defined therein at a location intermediate of the length of the body (30) so as to define a fixed rigid body forming region (70) at one end thereof, a movable rigid body forming region (71) at the opposite end thereof opposite to the fixed rigid body forming region (70) in the longitudinal direction (X), and side connecting strips (30b, 30b) spaced by the opening (31) from each other in a widthwise direction (Y) of the opening (31) and connecting the fixed rigid body forming region (70) and the movable rigid body forming region (71) together.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: May 26, 1998
    Assignee: Ishida Co., Ltd.
    Inventors: Kazufumi Naito, Michito Utsunomiya, Hiroyuki Konishi, Shotaro Tamai
  • Patent number: 5656800
    Abstract: In order to increase both the weighing accuracy and the weighing speed of a weighing apparatus, a delta.multidot.sigma analog-to-digital converter (4) having a cut-off frequency higher than that of an analog filter (3) is connected with the output of the analog filter (3). Also, in order to perform a quick drift correction of an amplifier (2), the analog filter (3) is selectively switchable so as to perform a filtering function during a weighing mode and to perform a buffering function during a correction mode correcting means (52) is provided for storing the digital signal from the delta.multidot.sigma analog-to-digital converter (4) as a drift signal (df) during the correction mode and for providing a corrected digital weight signal (d2) by subtracting the drift signal (dr) from the digital weight signal (d1) obtained from the delta.multidot.sigma-type analog-to-digital converter (4) during the weighing mode.
    Type: Grant
    Filed: September 24, 1996
    Date of Patent: August 12, 1997
    Assignee: Ishida Co., Ltd.
    Inventors: Kazufumi Naito, Kouji Itoh
  • Patent number: RE36411
    Abstract: A weighing apparatus has a scale cell and a dummy cell, both similarly structured and cantilevered. A load to be measured is applied to the free end of the scale cell and a standard weight is attached to the free end of the dummy cell. Analog electrical signals from these cells are converted to digital data. The effect of the standard weight is removed from the digital data from the dummy cell to obtain the effect of external vibrations which effect is multiplied by a suitable coefficient dependent on the applied load and subtracted from the digital data from the scale cell.
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: November 30, 1999
    Assignee: Ishida Co., Ltd.
    Inventors: Yoshihiro Nakamura, Kazufumi Naito