Patents by Inventor Katsuhiro Fujikawa

Katsuhiro Fujikawa 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: 20230411802
    Abstract: An all-solid-state battery 1 includes: an exterior can 2 having a bottom 21 and a cylindrical side wall 22; a negative-electrode can 3 having a flat portion 31 and a peripheral wall 32; a power generation element 4 located between the exterior can 2 and the negative-electrode can 3; a gasket 6 positioned between the cylindrical side wall 22 and peripheral wall 32; and recoverable conductive sheets 5. The bottom 21 of the exterior can 2 includes a recessed portion 211 recessed toward the outside. A recoverable conductive sheet 5 is located between the power generation element 4 and the inner bottom surface of the recessed portion 211, and another recoverable conductive sheet is located between the power generation element 4 and the flat portion 31 of the seal can 3.
    Type: Application
    Filed: November 10, 2021
    Publication date: December 21, 2023
    Applicant: Maxell, Ltd.
    Inventors: Katsuhiro Fujikawa, Koji Yamaguchi, Takumi Otsuka
  • Publication number: 20220320645
    Abstract: The all-solid-state battery 1 includes: an exterior can 2 with a bottom 21; a seal can 3 having a flat portion 31 and facing the exterior can 2; and a power generation element 4 contained between the exterior can 2 and seal can 3, where at least one of the inner surface of the bottom 21 of the exterior can 2 and the inner surface of the flat portion 31 of the seal can 3 includes a recess-protrusion structure. The battery includes a conductive sheet 5 located between that one of the inner surfaces which includes the recess-protrusion structure and the power generation element 4, the conductive sheet having an ability to recover against a pressing force. The rate of recovery of the conductive sheet 5 against a pressing force is not lower than 7%.
    Type: Application
    Filed: August 11, 2020
    Publication date: October 6, 2022
    Applicant: MAXELL, LTD.
    Inventors: Katsuhiro Fujikawa, Takuma Morishita, Takumi Otsuka
  • Patent number: 4915045
    Abstract: A sewing machine control device equipped with an operating switch (10) for instructing the sewing machine to operate and stop by turning on and off the operating switch (10) and a counter (9) for accumulating the duration of a running signal (SRT) produced while the operating switch is in an on state, so that the actual accumulated (total) operating time during which the sewing machine is actually operated can be obtained accurately from the accumulated (total) duration of the running signal (SRT).
    Type: Grant
    Filed: September 5, 1986
    Date of Patent: April 10, 1990
    Inventor: Katsuhiro Fujikawa
  • Patent number: 4706588
    Abstract: In a sewing machine which is so designed that its cloth presser driven to press a material to be sewn for a sewing operation is automatically released when the sewing operation is ended, a sewing machine control device comprising drivers for operating a brake to stop the vertical movement of the needle, for operating the cloth presser, and for operating a thread wiper and a control section. When the needle is moved to its upper position at the final stage of the sewing operation, the control section operates the driver for the thread wiper and restores, after the thread wiper has been restored, the cloth presser. Alternatively, if the thread wiper isn't used, when the needle is moved to the upper position, the control section operates the brake and releases the cloth presser whereby the time which elapses until the cloth presser has been released is shortened.
    Type: Grant
    Filed: August 18, 1986
    Date of Patent: November 17, 1987
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Katsuhiro Fujikawa
  • Patent number: 4648339
    Abstract: A sewing machine speed control apparatus enabling finer control of sewing machine rotational speed by providing speed instructive pulses to a clutch coil and a braking coil of the sewing machine within a pulse application period of an oscillator used to detect the actual rotational speed of the sewing machine. The speed instructive pulses are applied in accordance with a difference between actual and desired speeds; the difference is used to look up stored values corresponding to desired periods of application of speed instructive pulses.
    Type: Grant
    Filed: May 30, 1985
    Date of Patent: March 10, 1987
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Katsuhiro Fujikawa
  • Patent number: 4545314
    Abstract: A control system for stopping the operation of a sewing machine at a prescribed stop position includes a detector for generating signals indicative of detected positions of a needle of the sewing machine and a signal indicative of a detected speed of operation of the sewing machine. A control device stops the operation of the sewing machine in response to one of the signals indicative of the needle positions when the speed of operation of the sewing machine reaches a predetermined stop-ready speed. The control device has a selector for selecting either one of the options of detecting the stop-ready speed reached by the speed of operation of the sewing machine with a program stored in the control device and with one of the signals from the detector. The detector can thus detect stop-ready speeds for different sewing machine types without changing the program stored in the control device.
    Type: Grant
    Filed: December 9, 1983
    Date of Patent: October 8, 1985
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Katsuhiro Fujikawa
  • Patent number: 4530297
    Abstract: A speed control apparatus for a sewing machine in which two separate circuits are provided for controlling driving, braking and stopping of the sewing machine. An output of one of the speed setting circuits is selected and applied for driving, braking and stopping the sewing machine. Operating levels for the two speed setting circuits are independently adjustable.
    Type: Grant
    Filed: January 25, 1984
    Date of Patent: July 23, 1985
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Katsuhiro Fujikawa
  • Patent number: 4509445
    Abstract: A control device for a sewing machine, in which the numbers of stitches in forward and backward feed of an article to be sewed are preset, comprises: a reverse-stitching electromagnetic operating unit for reversing the direction of feed of the article; a control unit for applying instruction signals to the electromagnetic operation unit to control the latter; and delay means for controlling the operation delay time between the turning "on" or "off" of the electrical instruction signal which is applied to the electromagnetic operating unit by the control means and the turning "on" or "off" of the electromagnetic operating unit. The time instant that the instruction signal is turned "on" or "off" by the control means is caused to occur a period of time, corresponding to the operation delay time, earlier than a predetermined time instant, so that the number of stitches preset is equal to the number of stitches actually formed.
    Type: Grant
    Filed: February 4, 1983
    Date of Patent: April 9, 1985
    Assignee: Mitsubishi Denki K.K.
    Inventors: Katsuhiro Fujikawa, Osamu Gohda
  • Patent number: 4469038
    Abstract: A system for controlling a sewing machine includes a drive unit including a motor for driving the sewing machine, a brake unit including a brake for stopping the sewing machine, detection means for detecting operational states of the sewing machine, and input means for supplying operation commands to the sewing machine. The input means converts a plurality of sounds voiced by the operator into predetermined speech signals and issues such signals to a control unit to enable the latter to produce operation command signals corresponding to the speech signals for controlling the drive unit and the brake unit.
    Type: Grant
    Filed: November 30, 1982
    Date of Patent: September 4, 1984
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Katsuhiro Fujikawa