Patents by Inventor Yoshikazu Hamada

Yoshikazu Hamada 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: 20220015512
    Abstract: A slider includes a slider body part that includes an upper wing plate and a lower wing plate, a stop tab body, a tab elastic member that biases the stop tab body, a base part integrally formed with the upper wing plate, and an operation cover part rotatably attached to the base part. The operation cover part includes a pressing projecting part that projects from an inner surface of a top plate part, and the pressing projecting part has a configuration in which by rotating the operation cover part, a locked state and an unlocked state can be switched therebetween. Accordingly, since a stop mechanism by the rotation of the operation cover part can be provided in the slider with a relatively simple configuration, the manufacturing cost can be reduced and the productivity can be improved.
    Type: Application
    Filed: December 20, 2018
    Publication date: January 20, 2022
    Inventors: Yohei Miyazaki, Koji Yamagishi, Yoshikazu Hamada
  • Patent number: 11083254
    Abstract: A slider for slide fastener includes: a slider body including an upper blade and a lower blade which are separate from and face each other in an upward and downward direction, and a guide post which connects the upper blade and the lower blade on a front end side; and a pull tab which is attached to the slider body. A cutout region is formed in at least one of both sides in a width direction of the upper blade, the both sides in the width direction sandwiching the guide post. The cutout region is formed of a side edge portion extending toward an outer side in the width direction of the guide post and being arranged along a front and rear direction, and a front edge portion.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: August 10, 2021
    Assignee: YKK Corporation
    Inventors: Masayoshi Kojima, Takayuki Inukai, Yoshikazu Hamada
  • Patent number: 10869525
    Abstract: A slider for a slide fastener includes a body, a pull-tab, a control claw, and a cover. The control claw is placed on a shaft portion between a front attachment column and a rear attachment column. A protrusion length of a claw portion that enters an element path from a claw hole changes depending on an up-down position of the shaft portion so as to control movement of the body. The cover is attached to the front attachment column and the rear attachment column so as to be swingable in an up-down direction. The upper plate portion pushes the control claw downward due to a restoring force of a plate spring portion extending from a front end of the upper plate portion along a front surface of the front attachment column. The body, the pull-tab, the control claw, and the cover are separate components.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: December 22, 2020
    Assignee: YKK Corporation
    Inventors: Yohei Miyazaki, Yoshikazu Hamada
  • Patent number: 10765177
    Abstract: A slider is provided with a tab insertion gap between an upper blade of a slider body and a free end portion of a cover body and an open and close member for opening and closing the tab insertion gap. The open and close member is disposed alongside a stop pawl body in the slider width direction, and is also disposed such that a rear end part of the open and close member can swing vertically between a passing position where a attaching shaft portion of a tab passes through and a blocking position where the passing of the attaching shaft portion of the tab is blocked. The open and close member is urged toward the blocking position. The slider can attach the tab afterward, has a stop mechanism, and can significantly reduce manufacturing costs.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: September 8, 2020
    Assignee: YKK Corporation
    Inventor: Yoshikazu Hamada
  • Publication number: 20200268114
    Abstract: A slider for slide fastener includes: a slider body including an upper blade and a lower blade which are separate from and face each other in an upward and downward direction, and a guide post which connects the upper blade and the lower blade on a front end side; and a pull tab which is attached to the slider body. A cutout region is formed in at least one of both sides in a width direction of the upper blade, the both sides in the width direction sandwiching the guide post. The cutout region is formed of a side edge portion extending toward an outer side in the width direction of the guide post and being arranged along a front and rear direction, and a front edge portion.
    Type: Application
    Filed: November 8, 2017
    Publication date: August 27, 2020
    Inventors: Masayoshi Kojima, Takayuki Inukai, Yoshikazu Hamada
  • Publication number: 20200128926
    Abstract: A slider for a slide fastener includes a body, a pull-tab, a control claw, and a cover. The control claw is placed on a shaft portion between a front attachment column and a rear attachment column. A protrusion length of a claw portion that enters an element path from a claw hole changes depending on an up-down position of the shaft portion so as to control movement of the body. The cover is attached to the front attachment column and the rear attachment column so as to be swingable in an up-down direction. The upper plate portion pushes the control claw downward due to a restoring force of a plate spring portion extending from a front end of the upper plate portion along a front surface of the front attachment column. The body, the pull-tab, the control claw, and the cover are separate components.
    Type: Application
    Filed: July 19, 2017
    Publication date: April 30, 2020
    Inventors: Yohei Miyazaki, Yoshikazu Hamada
  • Publication number: 20190357637
    Abstract: A slider is provided with a tab insertion gap between an upper blade of a slider body and a free end portion of a cover body and an open and close member for opening and closing the tab insertion gap. The open and close member is disposed alongside a stop pawl body in the slider width direction, and is also disposed such that a rear end part of the open and close member can swing vertically between a passing position where a attaching shaft portion of a tab passes through and a blocking position where the passing of the attaching shaft portion of the tab is blocked. The open and close member is urged toward the blocking position. The slider can attach the tab afterward, has a stop mechanism, and can significantly reduce manufacturing costs.
    Type: Application
    Filed: November 30, 2016
    Publication date: November 28, 2019
    Inventor: Yoshikazu Hamada
  • Patent number: 10085527
    Abstract: There is provided a slider assembly for a slide fastener, including: a slider body; a pull-tab; and a resilient locking member. The pull-tab is provided with a window aligned with an aperture in an upper wing of the slider body when the pull-tab is in a first angular end position. A distal end of the locking member extends towards a guide channel through the window and the aperture. The locking member is configured to be resiliently biased towards a locking position where a distal end thereof protrudes in the guide channel. A proximal end of the pull-tab has a cam cooperating with the locking member such that the locking member takes the locking position when the pull-tab is in the first angular end position, and the locking member is moved towards an unlocking position when the pull-tab is pivoted away from the first angular end position.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: October 2, 2018
    Assignee: YKK Corporation
    Inventor: Yoshikazu Hamada
  • Publication number: 20170290394
    Abstract: There is provided a slider assembly for a slide fastener, including: a slider body; a pull-tab; and a resilient locking member. The pull-tab is provided with a window aligned with an aperture in an upper wing of the slider body when the pull-tab is in a first angular end position. A distal end of the locking member extends towards a guide channel through the window and the aperture. The locking member is configured to be resiliently biased towards a locking position where a distal end thereof protrudes in the guide channel. A proximal end of the pull-tab has a cam cooperating with the locking member such that the locking member takes the locking position when the pull-tab is in the first angular end position, and the locking member is moved towards an unlocking position when the pull-tab is pivoted away from the first angular end position.
    Type: Application
    Filed: March 31, 2017
    Publication date: October 12, 2017
    Inventor: Yoshikazu Hamada
  • Patent number: 9462853
    Abstract: There is provided a slider for a slide fastener. A lock member is swingably supported by a pillar portion which is erected on an upper surface of a body. A cover member covers the pillar portion and the lock member from above. The lock member includes a body portion which is disposed on the upper surface of the body and a claw portion which protrudes from the body portion and enters an element guide path of the body. One side surface of the claw portion is formed with an inclined surface which causes the claw portion to be gradually tapered toward a front end of the claw portion. The other side surface of the claw portion is formed with a stepped portion which causes a plate thickness of the claw portion to be smaller than a plate thickness of the body portion.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: October 11, 2016
    Assignee: YKK Corporation
    Inventors: Yoshikazu Hamada, Keiichi Keyaki
  • Patent number: 9392847
    Abstract: A method for manufacturing a slider for a slide fastener with an automatic stopper. A common part which includes a stopping pawl portion, a biasing portion and a cover portion and forms the automatic stopper is provided. At least two bodies selected from among a first body having a guide recess configured to guide metal teeth, a second body having a guide recess configured to guide resin teeth which are formed by injection molding, and a third body having a guide recess configured to guide teeth made of resin monofilaments are prepared. The common part is mounted on one of the bodies selected from the at least two bodies.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: July 19, 2016
    Assignee: YKK Corporation
    Inventors: Kiyoshi Oda, Keiichi Keyaki, Yoshikazu Hamada
  • Patent number: 9220323
    Abstract: There is provided a pull tab post-attaching slider for a slide fastener. An upper blade of a slider body includes a first mounting portion. A free end portion of a pull tab attachment rod includes a second mounting portion. A blocking member includes a first mounted portion mounted on the first mounting portion and a second mounted portion mounted on the second mounting portion. One of the first mounting portion and the first mounted portion includes a first dovetail groove portion and the other includes a first fitting engagement portion having a first fitting engagement structure fitted into the first dovetail groove portion. One of the second mounting portion and the second mounted portion includes a second dovetail groove portion and the other includes a second fitting engagement portion having a second fitting engagement structure fitted into the second dovetail groove portion.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: December 29, 2015
    Assignee: YKK Corporation
    Inventors: Yoshikazu Hamada, Keiichi Keyaki
  • Publication number: 20150335107
    Abstract: There is provided a pull tab post-attaching slider for a slide fastener. An upper blade of a slider body includes a first mounting portion. A free end portion of a pull tab attachment rod includes a second mounting portion. A blocking member includes a first mounted portion mounted on the first mounting portion and a second mounted portion mounted on the second mounting portion. One of the first mounting portion and the first mounted portion includes a first dovetail groove portion and the other includes a first fitting engagement portion having a first fitting engagement structure fitted into the first dovetail groove portion. One of the second mounting portion and the second mounted portion includes a second dovetail groove portion and the other includes a second fitting engagement portion having a second fitting engagement structure fitted into the second dovetail groove portion.
    Type: Application
    Filed: November 12, 2012
    Publication date: November 26, 2015
    Inventors: Yoshikazu Hamada, Keiichi Keyaki
  • Patent number: 9095192
    Abstract: A slider for a slide fastener includes a slider main body, a pull tab, a stopper hook having one end configured to be engaged with fastener elements to obstruct the slider main body from moving, a spring portion, a cam portion configured to urge the pull tab in a direction in which the pull tab returns to a lay-down state where the pull tab is laid down toward one side of the slider main body using an elastic force of the spring portion when the pull tab pivots from the lay-down state to an erected state, and regulating portions configured to obstruct the pull tab from pivoting further from the erected state so that the pull tab is obstructed from pivoting to the other side of the slider main body.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: August 4, 2015
    Assignee: YKK Corporation
    Inventor: Yoshikazu Hamada
  • Patent number: D779374
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: February 21, 2017
    Assignee: YKK Corporation
    Inventors: Yoshikazu Hamada, Massimiliano Di Girolami
  • Patent number: D780624
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: March 7, 2017
    Assignee: YKK Corporation
    Inventors: Yoshikazu Hamada, Massimiliano Di Girolami
  • Patent number: D803095
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: November 21, 2017
    Assignee: YKK Corporation
    Inventors: Massimiliano Di Girolami, Yoshikazu Hamada
  • Patent number: D803096
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: November 21, 2017
    Assignee: YKK Corporation
    Inventors: Massimiliano Di Girolami, Yoshikazu Hamada
  • Patent number: D812520
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: March 13, 2018
    Assignee: YKK Corporation
    Inventors: Massimiliano Di Girolami, Yoshikazu Hamada
  • Patent number: D815983
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: April 24, 2018
    Assignee: YKK Corporation
    Inventors: Massimiliano Di Girolami, Yoshikazu Hamada