Patents by Inventor Jindai Yamakawa

Jindai Yamakawa 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: 11207897
    Abstract: Provided are a printing jig for an inkjet-type printer and a method for manufacturing printed objects therewith, which jig can be easily produced in accordance with the shape and size of an object to be printed and allows the object to be accurately positioned relative to the printer. The printing jig supports an object to be printed, and is placed in an inkjet-type printer when the object is being printed. The printing jig includes a mounting surface on which the object is to be placed, and a positioning part for positioning the object. The positioning part includes a protrusion preformed on the mounting surface so as to be brought into contact with at least part of the object placed on the mounting surface. The protrusion is made of deposited and cured ink used by the inkjet-type printer.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: December 28, 2021
    Assignee: CITIZEN WATCH CO., LTD.
    Inventors: Taku Takashina, Jindai Yamakawa
  • Publication number: 20210107294
    Abstract: Provided are a printing jig for an inkjet-type printer and a method for manufacturing printed objects therewith, which jig can be easily produced in accordance with the shape and size of an object to be printed and allows the object to be accurately positioned relative to the printer. The printing jig supports an object to be printed, and is placed in an inkjet-type printer when the object is being printed. The printing jig includes a mounting surface on which the object is to be placed, and a positioning part for positioning the object. The positioning part includes a protrusion preformed on the mounting surface so as to be brought into contact with at least part of the object placed on the mounting surface. The protrusion is made of deposited and cured ink used by the inkjet-type printer.
    Type: Application
    Filed: January 23, 2018
    Publication date: April 15, 2021
    Inventors: Taku TAKASHINA, Jindai YAMAKAWA
  • Patent number: 10342303
    Abstract: A band comprised of a plurality of link members connected to each other to be able to pivot by pivot shafts, in the band, at least one of the plurality of link members has a sheet member and a wrapped member around which the sheet member is wrapped, the wrapped member has a side part facing an adjoining link member, and at least one end part of the sheet member is arranged between a top end part and bottom end part of the side part in the thickness direction.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: July 9, 2019
    Assignee: CITIZEN WATCH CO., LTD.
    Inventors: Jindai Yamakawa, Takuya Shoji
  • Publication number: 20170311685
    Abstract: A band comprised of a plurality of link members connected to each other to be able to pivot by pivot shafts, in the band, at least one of the plurality of link members has a sheet member and a wrapped member around which the sheet member is wrapped, the wrapped member has a side part facing an adjoining link member, and at least one end part of the sheet member is arranged between a top end part and bottom end part of the side part in the thickness direction.
    Type: Application
    Filed: October 13, 2015
    Publication date: November 2, 2017
    Inventors: Jindai YAMAKAWA, Takuya SHOJI
  • Patent number: 7121165
    Abstract: Substantially cylindrical head tube body, center tube body and tip tube body threadedly engage each other to thereby construct a tool main body of a tool for wristwatch. The through hole of the center tube body is provided with a partition part having a small-diameter hole and slant face. A hammering member and compression spring are slidably accommodated in the through hole. A trigger shaft includes a small-diameter part which can be inserted in a center hole of the hammering member, and a large-diameter part continuing therefrom through the slant face, which can pass through the small-diameter hole. A deformed coil spring has the large-diameter part of the trigger shaft fitted therein in wound form, and energizes the trigger shaft toward sliding shaft while slanting the trigger shaft so as to cause the small-diameter part to shift toward the inside wall of the tool main body.
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: October 17, 2006
    Assignee: Citizen Watch Co., Ltd.
    Inventor: Jindai Yamakawa
  • Patent number: 6913411
    Abstract: A coupling structure of a watch band in which a coupling member such as a coupling pin or a hair pin does not sup from a coupling hole even if a user practices strenuous sports or a rotation and a twist are always applied to the coupling portion due to use for years, and a method of manufacturing a piece member for the band coupling structure. In a coupling structure of a band comprising a plurality of piece members, a projection protruded in a central direction of a coupling hole from an internal wall of the coupling hole is formed on an outer end of the coupling hole in the piece member positioned on an outside in a transverse direction, and a coupling member is inserted in the coupling hole provided in the transverse direction of the piece member and is engaged with the projection, thereby coupling the piece members to each other.
    Type: Grant
    Filed: March 1, 2002
    Date of Patent: July 5, 2005
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Jindai Yamakawa, Mamoru Sano, Hideo Taguchi
  • Publication number: 20030167880
    Abstract: Substantially cylindrical head tube body 1, center tube body 2 and tip tube body 4 threadedly engaged each other to thereby construct tool main body 5 of tool for wristwatch 20. Through hole 2c of the center tube body 2 is provided with partition part 2e having small-diameter hole 2d and slant face 2f. Hammering member 7 and compression spring 6 are slidably accommodated in the through hole 2c. Trigger shaft 8 includes small-diameter part 8a, which can be inserted in center hole 7a of the hammering member 7, and large-diameter part 8c continuing therefrom through slant face 8b, which can pass through the small-diameter hole 2d. Deformed coil spring 9 has the large-diameter part 8c of the trigger shaft 8 fitted therein in wound form, and energizes the trigger shaft 8 toward sliding shaft 11 while slanting the trigger shaft 8 so as to cause the small-diameter part 8a to shift toward the inside wall of the tool main body 5.
    Type: Application
    Filed: January 17, 2003
    Publication date: September 11, 2003
    Inventor: Jindai Yamakawa
  • Publication number: 20030118396
    Abstract: It is an object to provide a coupling structure of a band in which a coupling member such as a coupling pin or a hair pin does not slip from a coupling hole even if a user practices strenuous sports or a rotation and a twist are always applied to the coupling portion due to use for years, and a method of manufacturing a piece member for the band coupling structure. In a coupling structure of a band comprising a plurality of piece members, a projection protruded in a central direction of a coupling hole from an internal wall of the coupling hole is formed on an outer end of the coupling hole in the piece member positioned on an outside in a transverse direction, and a coupling member is inserted in the coupling hole provided in the transverse direction of the piece member and is engaged with the projection, thereby coupling the piece members to each other.
    Type: Application
    Filed: November 12, 2002
    Publication date: June 26, 2003
    Inventors: Jindai Yamakawa, Mamoru Sano, Hideo Taguchi
  • Patent number: 6434798
    Abstract: There is provided a pair of open plates 3 rotatably connected to both ends of a base 1 and adapted to be oppositely opened from closed positions. The open plates are held at the closed position by holding means 5, 6. Stopping means 15, 16 are provided for stopping the open plates halfway of an opening operation.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: August 20, 2002
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Jindai Yamakawa, Kaname Atsumi
  • Patent number: 6170250
    Abstract: A link is made by bending a metal plate, and comprises a plurality of annular portions (13, 14, 15) and connecting portions (12) between the annular portions. An annular connecting link (3) has a gap through which the connecting portion passes and engaged with the connecting portion. A connecting member (4) having a base (41), a connecting arm (43), and an end portion is provided to be inserted between the link and the connecting link so as to connect the connecting link to the link with the connecting arm. A stopping means (17,42) is provided for holding and stopping the connecting member within the link. An opening is provided for disclosing an outer surface of the end portion of the connecting member from one of the annular portions at an end thereof, so as to allow a tool (5) to push the connecting member.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: January 9, 2001
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Toshiaki Hara, Jindai Yamakawa