Patents by Inventor Shizuma Tazuke

Shizuma Tazuke 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).

  • Patent number: 6374820
    Abstract: A manufacturing method for a monolithic ceramic part permitting a ceramic laminate to be cut stably and speedily, even if the thickness of the ceramic laminate is large. In order to divide a mother ceramic laminate into individual laminates of monolithic ceramic part units, the ceramic laminate is cut with a cutting blade, using a pair of guides disposed on opposite sides of the cutting blade in the vicinity of one principal plane of the ceramic laminate to control the cutting direction, and then individual ceramic laminates thus obtained by cutting are fired.
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: April 23, 2002
    Assignee: Murata Manufacturing Co., LTD
    Inventors: Yoshinori Sakamoto, Shizuma Tazuke, Haruhiko Mori
  • Patent number: 5632813
    Abstract: A dipping machine has a chucking portion for engaging a holding plate to downwardly direct chip components, which are held by the holding plate, and a dipping vessel provided under the chucking portion, which is coated with a thin film of electrode paste. Conveyors horizontally transfer the holding plate holding the downwardly directed chip components, coated with the electrode paste, to a drying furnace. The drying furnace receives the holding plate holding the chip components downwardly and rotates the same by 360.degree. for drying the electrode paste. Thus, the as-formed electrodes have uniform widths on side surfaces of the chip components and the electrode paste is protected against adhesion of foreign matters such as dust, whereby it is possible to manufacture chip components with stable quality.
    Type: Grant
    Filed: February 25, 1992
    Date of Patent: May 27, 1997
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Tadahiro Nakagawa, Shizuma Tazuke, Satoshi Omuro, Kiyoshi Yoshida, Nobuaki Kashiwagi, Takashi Kimoto
  • Patent number: 5330574
    Abstract: An electrode forming apparatus comprises a recovery blade for collecting electrode paste on the bottom surface of a dipping vessel toward a first end of the dipping vessel and a levelling blade for levelling the electrode paste, being collected toward the first end, toward a second end of the dipping vessel for adjusting the same to a constant film thickness. The recovery blade and the levelling blade are supported by a blade support frame, which is horizontally reciprocated with respect to the dipping vessel. The recovery blade is vertically moved by a cylinder, while the vertical position of the levelling blade is finely controlled by a levelling control motor. Thus, the film thickness of the electrode paste can be accurately adjusted with excellent repeatability, thereby carrying out homogeneous electrode application.
    Type: Grant
    Filed: March 31, 1992
    Date of Patent: July 19, 1994
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Tadahiro Nakagawa, Shizuma Tazuke, Mitsuro Hamuro, Hirokazu Higuchi, Katsuyuki Moriyasu, Akihiko Takahashi
  • Patent number: 5275661
    Abstract: A chucking portion (10) is supported at the lower part of a dip head portion (2) to be vertically movable in a horizontal state through four shafts. Two diagonally positioned two shafts 11a, 11b are formed by ball screws, and the other two (11c, 11d) serve as guide shafts. The dip head portion (2) contains a motor (12) for synchronously driving the two ball screws, and the chucking portion (10) horizontally engages a holding plate (A) holding a number of chip type electronic components (B) to downwardly direct the same. A dipping vessel (7) having a bottom surface which is coated with a thin film of paste is horizontally arranged under the dip head portion (2). Thus, it is possible to maintain the holding plate in parallel with the paste, for applying electrodes to the chip type electronic components with high accuracy.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: January 4, 1994
    Assignee: Murata Mfg. Co., Ltd.
    Inventors: Tadahiro Nakagawa, Shizuma Tazuke, Satoshi Omuro, Kiyoshi Yoshida, Nobuaki Kashiwagi, Takashi Kimoto
  • Patent number: 5249906
    Abstract: Pin head mounting members are rotatably mounted on a horizontal spindle above a table which horizontally supports a holding, plate holding chip type electronic components. The spindle is vertically movable by a vertical cylinder. Each pin head mounting member is shaped as a rectangular sleeve. A mounting surface is formed on each side portion of the pin head mounting member. A pin head each having a number of press pin is detachably mounted on each of the mounting surfaces A locking pin is provided on an upper end portion of the spindle for locking the pin head mounting members every 90.degree.. Thus, it is possible to efficiently replace press pins in response to a type change of chip type electronic components, as well as to quickly exchange a broken press pin.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: October 5, 1993
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Tadahiro Nakagawa, Shizuma Tazuke, Satoshi Omuro, Kiyoshi Yoshida, Nobuaki Kashiwagi, Takashi Kimoto, Naoyuki Mori, Hidemasa Iwami, Shigeo Hayashi, Nobuyuki Hayashi, Toru Matsumura
  • Patent number: 5248340
    Abstract: Take-in and take-out conveyors are provided on horizontal sides of a chucking mechanism, which is adapted to engage a workpiece and vertically move the same, and disposed flush with each other for supplying and discharging the workpiece to and from a position of the chucking mechanism. A dipping vessel is provided immediately under the chucking mechanism at a position lower than the level at which the workpiece is carried by the take-in and take-out conveyors. The take-in and take-out conveyors, which are adapted to carry the workpiece in the same direction and at the same speed, are slid/driven in approaching and separating directions between standby positions, which are opposite to each other across a vertical space of the chucking mechanism, and working positions which are located near each other immediately under the chucking mechanism. Thus, it is possible to perform dipping with high accuracy without sliding the chucking portion while protecting the workpiece against vibration and deviation.
    Type: Grant
    Filed: February 25, 1992
    Date of Patent: September 28, 1993
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Tadahiro Nakagawa, Shizuma Tazuke
  • Patent number: 5080380
    Abstract: A plurality of vertically extending cylinders are formed in the interior of a chuck body providing a chucking face on its lower surface. Pistons, in which permanent magnets are embedded, are vertically movably provided in respective ones of the cylinders. When compressed air is introduced into upper portions of the cylinders, the pistons are downwardly displaced so that the permanent magnets are relatively approached to the lower surface of the chuck body. Thus, the chucking face is supplied with magnetic force exceeding a prescribed level, to attract a holder holding electronic component chips, for example. When compressed air is introduced into lower portions of the cylinders, on the other hand, the pistons are upwardly displaced so that the permanent magnets are relatively separated from the lower surface of the chuck body. Thus, the chucking face is supplied with no magnetic force exceeding the prescribed level, so that the holder is separated from the chuck body.
    Type: Grant
    Filed: June 15, 1990
    Date of Patent: January 14, 1992
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Tadahiro Nakagawa, Shizuma Tazuke, Masatoshi Arishiro