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: 20080222854
    Abstract: A slide fastener slider comprising: a slider body; a pull tab holder body attached to the slider body in a cantilevered state with one end portion thereof fixed to a top face side of the slider body; an opening/closing member disposed slidably on the slider body so as to open and close a gap formed between an other end portion of the pull tab holder body and the upper blade; and an elastic member for urging the opening/closing member to a closing position of the gap, so that a pull tab is detachably held between the slider body and the pull tab holder body, the slider further comprising a fitting sliding structure in which the pull tab holder body is fitted to the slider body from a front or rear end thereof so as to be relatively slidable in a length direction of the slider body.
    Type: Application
    Filed: March 11, 2008
    Publication date: September 18, 2008
    Applicant: YKK CORPORATION
    Inventors: Keiichi Keyaki, Yoshikazu Hamada
  • Patent number: 7210202
    Abstract: A reverse-separating device for a slide fastener, comprises a retainer pin 5, a separable pin 6 both made of metal and a reverse-separating slider 3. Each of the retainer pin 5 and the separable pin 6 is of a U-shaped cross-section and has a slit 18 formed along its front edge. At the lower end of the slit 18, the retainer pin 5 projects rearward beyond the slit 18 to thus provide a loop-like stopper 22 for engagement with the flange 31 of the reverse-separating slider 3. Once the retainer pin 5 is inserted into the reverse-separating slider 3, the retainer pin 5 is firmly retained by three parts of the reverse-separating slider 3. The separable pin 6 has a projecting ledge 28 formed on the upper end the projecting fin 27 so as to project laterally therefrom. The projecting ledge 28 of the separable pin 6 is adapted to abut against the upper end of the projecting fin 25 of the retainer pin 5 and thus prevent the separable pin 6 from moving further into the reverse-separating slider 3.
    Type: Grant
    Filed: February 23, 2005
    Date of Patent: May 1, 2007
    Assignee: YKK Corporation
    Inventor: Yoshikazu Hamada
  • Patent number: 6993810
    Abstract: A slider for slide fastener provided with an automatic stopper device which allows automatic assembly and manual assembly and holds a leaf spring in a stabilized condition, the slider having five members, that is, a body, a pull tag, a pawl member, a leaf spring and a cover. Mounting posts for attachment of the cover are provided on front and rear portions on a top face of the body. The top face of each of the mounting posts has a protrusion as a first holding portion for holding the leaf spring in which concave portions are formed in both ends. The cover to be mounted on the mounting posts has protrusions as second holding portions for holding the leaf spring at front and rear ends of the inner face of the top wall. Each of the concave portions in the leaf spring is engaged with the protrusions of the first holding portion and second holding portion with play.
    Type: Grant
    Filed: October 15, 2003
    Date of Patent: February 7, 2006
    Assignee: YKK Corporation
    Inventor: Yoshikazu Hamada
  • Publication number: 20050193528
    Abstract: A reverse-separating device for a slide fastener, comprises a retainer pin 5, a separable pin 6 both made of metal and a reverse-separating slider 3. Each of the retainer pin 5 and the separable pin 6 is of a U-shaped cross-section and has a slit 18 formed along its front edge. At the lower end of the slit 18, the retainer pin 5 projects rearward beyond the slit 18 to thus provide a loop-like stopper 22 for engagement with the flange 31 of the reverse-separating slider 3. Once the retainer pin 5 is inserted into the reverse-separating slider 3, the retainer pin 5 is firmly retained by three parts of the reverse-separating slider 3. The separable pin 6 has a projecting ledge 28 formed on the upper end the projecting fin 27 so as to project laterally therefrom. The projecting ledge 28 of the separable pin 6 is adapted to abut against the upper end of the projecting fin 25 of the retainer pin 5 and thus prevent the separable pin 6 from moving further into the reverse-separating slider 3.
    Type: Application
    Filed: February 23, 2005
    Publication date: September 8, 2005
    Inventor: Yoshikazu Hamada
  • Publication number: 20040078942
    Abstract: A slider for slide fastener provided with an automatic stopper device which allows automatic assembly and manual assembly and holds a leaf spring in a stabilized condition, the slider comprising five members, that is, a body, a pull tag, a pawl member, a leaf spring and a cover. Mounting posts for attachment of the cover are provided on front and rear portions on a top face of the body. The top face of each of the mounting posts has a protrusion as a first holding portion for holding the leaf spring in which concave portions are formed in both ends. The cover to be mounted on the mounting posts has protrusions as second holding portions for holding the leaf spring at front and rear ends of the inner face of the top wall. Each of the concave portions in the leaf spring is engaged with the protrusions of the first holding portion and second holding portion with an allowance.
    Type: Application
    Filed: October 15, 2003
    Publication date: April 29, 2004
    Inventor: Yoshikazu Hamada
  • Patent number: 6135513
    Abstract: An operational apparatus for a vehicle slide door comprises an outer open lever connected to an outside handle of the door, an inside handle of the door rotatable in door-opening and door-closing directions, an inner open lever connected to the inside handle, a child-proof mechanism, a powered closing unit for closing the door from a half-latched position to the full-latched position, a fail-safe lever for interrupting an operation of the powered closing unit, a sub inner lever connected to the inside handle. The inner open lever transmits a door-closing rotation of the inside handle to the fail-safe lever without through the child-proof mechanism. The sub inner lever transmits a door-opening rotation of the inside handle to the fail-safe lever without through the child-proof mechanism. The fail-safe lever is moved in the same direction by either of the door-opening and the door-closing rotations of the inside handle.
    Type: Grant
    Filed: September 4, 1998
    Date of Patent: October 24, 2000
    Assignee: Mitsui Kinzoku Kogyo Kabushiki Kaisha
    Inventors: Yoshikazu Hamada, Mitsuhiro Watanabe, Hirofumi Watanaba
  • Patent number: 6089649
    Abstract: An opening and closing device comprises a powered sliding unit, a powered closing unit in the slide door, a first terminal connected to a battery on the body, a second terminal connected to the closing unit, a handle switch provided in the door for detecting actuation of an open handle, a controller provided in the body for operating the sliding unit, a wireless apparatus for transmitting a radio signal to the controller when the switch detects the actuation of the handle. The second terminal electrically contacts with the first terminal when the door is closed. The device has a wire apparatus composed of a first wire line for connecting the first terminal and the controller, and a second wire line for connecting the second terminal and the handle switch.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: July 18, 2000
    Assignee: Mitsuo Kinzoku Kogyo Kabushiki Kaisha
    Inventors: Yoshikazu Hamada, Mitsuhiro Watanabe, Hirofumi Watanabe
  • Patent number: 6042160
    Abstract: A vehicle back door latch device has a striker fixed to a vehicle body, and a latch assembly fixed to a vehicle back door. The latch assembly comprises a main metal plate having a vessel-shaped storing portion for storing a latch, a sub metal plate fixed to the main metal plate so as to cover an upper opening of the storing portion. The storing portion is defined by a bottom wall, a front wall, a rear wall, a right-hand wall and a left-hand wall. A main notch portion and a sub notch portion are respectively formed in the bottom wall and the front wall for receiving the striker when the back door is closed. The rear wall is formed into an arc shape swelling backward. Engaging portions are respectively formed on both sides of the sub notch portion of the front wall, and studs which are engaged with the engaging portions when the back door is closed are fixed to the striker.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: March 28, 2000
    Assignee: Mitsui Kinzoku Kogyo Kabushiki Kaisha
    Inventors: Yoshikazu Hamada, Yuji Yoda
  • Patent number: 5898979
    Abstract: In a locking slide fastener slider, an upper wing has on its lower surface a central ledge extending from a guide post to the rear end so as to define a pair of side recesses one on each side of the central ledge. The central ledge has a large-width portion extending from around a base of the guide post and terminating midway to the rear end an intermediate tapering portion contiguous to the large-width portion, and a small-width portion extending from the tapering portion to the rear end. An inclined slope is formed along the boundary of the central ledge and one of side recesses. A locking-pawl-insertion through-hole extends transversely from the central ledge into one side recess across the slope.
    Type: Grant
    Filed: May 28, 1998
    Date of Patent: May 4, 1999
    Assignee: YKK Corporation
    Inventor: Yoshikazu Hamada
  • Patent number: 5758912
    Abstract: A vehicle door latch device comprises a latch body made of synthetic resin and having a recess at a front side thereof, a latch member rotatably mounted in the recess by a latch shaft for engaging with a striker and having an open position, a half-latch position and a full-latch position, a ratchet rotatably mounted in the recess and having a pawl portion for engaging with the latch member. The latch member has a first side surface incorporating a contact point with which the striker comes into contact when the door is closed while the latch member is in the full-latch position. The first side surface has a predetermined length defined between a first door opening side end and a first door closing side end. The first side surface is an arc having a uniform radius measured from the latch shaft or an arc having a distance from the latch shaft which gradually increases therealong from the first door closing side end to the first door opening side end.
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: June 2, 1998
    Assignee: Mitsui Kinzoku Kogyo Kabushiki Kaisha
    Inventor: Yoshikazu Hamada
  • Patent number: 5146772
    Abstract: A vehicle door lock device has a synthetic resin made body and a back plate attached on the rear side of the body. A lock lever is journalled between the back plate and the body in order to change-over the lock device between its locked condition and unlocked condition. A plastic made actuator box containing a power source for powerfully changing-over the lock lever is placed below the body. A switch box is formed at a rear side of the box and a switch body is contained in the switch box. A rotation shaft of the switch body protrudes rearward through the switch box and a switch arm is secured to the protruded portion of the rotation shaft. At the overlap position of the connecting lever and the lock lever, the connecting lever is installed rotatably, one end of the lever being connected to the switch arm and another end of it being connected to the key cylinder of a door or the lock lever.
    Type: Grant
    Filed: February 21, 1991
    Date of Patent: September 15, 1992
    Assignee: Mitsui Kinzoku Kogyo Kabushiki Kaisha
    Inventors: Yoshikazu Hamada, Yozo Ogino
  • Patent number: 5079964
    Abstract: The actuator for a door locking apparatus for a vehicle has an output shaft rotatably mounted on the body thereof, a cylindrical worm designed to be rotated by a motor, and a shaft tube having an internal toothed portion that is brought into mesh engagement with the cylindrical worm and designed to move between locked and unlocked positions along the axial direction of the worm when the worm is rotated. An elongate hole is formed in the arm fixed to the output shaft, and the pin of the shaft tube is brought into engagement with this elongate hole. A projection is provided on the shaft tube at such a position as to be closer to the output shaft than the pin is. The actuator has a torsion spring for returning the shaft tube from the locked or the unlocked position to a neutral position as an intermediate position between the two positions when the motor is switched off.
    Type: Grant
    Filed: May 21, 1990
    Date of Patent: January 14, 1992
    Assignee: Mitsui Kinzoku Kogyo Kabushiki Kaisha
    Inventors: Yoshikazu Hamada, Tetsuzo Igata
  • Patent number: 5072975
    Abstract: A lock device for a vehicle in accordance with the present invention comprises a synthetic resin body; a recess formed on the surface side of the body and storing a latch meshing switch a striker; a swell portion formed on the back side of the body, having a C-shaped sectional shape and partitioning by its inner wall a guide groove of the striker; an enclosure wall formed integrally with the body at a position above the upper wall of the swell portion on the back side of the body; and a box defined between the lower surface of the enclosure wall and the upper wall of the swell portion. A switch for detecting the rotating position of the latch is stored inside the box. A metallic back plate is fixed to the back side of the body and a cover for covering the back side of the box is formed integrally with the metallic back plate. A protuberance projecting into the box is provided to the latch.
    Type: Grant
    Filed: April 27, 1990
    Date of Patent: December 17, 1991
    Assignee: Mitsui Kinzoku Kogyo Kabushiki Kaisha
    Inventors: Yoshikazu Hamada, Yozo Ogino, Katsuya Ashizawa
  • Patent number: 5064229
    Abstract: The lock device for a vehicle in accordance with the present invention comprises a synthetic resin body fixed to a door and equipped with a recess formed on its right side; a latch fitted rotatably into the recess; a striker fixed to a car body and having a front leg portion having a small diameter and meshing with the latch, a rear side leg portion having a large diameter and a wedge-like bridge portion connecting the tips of the leg portions and having a thin front portion and a thick rear portion; a guide groove formed on the body and permitting the entrance of the striker; front side clamp means disposed on the front side of the guide groove, for clamping the front side of the striker; and rear side clamp means disposed on the rear side of the guide groove, for clamping the rear side portion of the striker. A swell portion defining the guide groove is formed integrally on the back side of the body and a metallic back plate is fixed to this back side.
    Type: Grant
    Filed: April 26, 1990
    Date of Patent: November 12, 1991
    Assignee: Mitsui Kinzoku Kogyo Kabushiki Kaisha
    Inventors: Yoshikazu Hamada, Yozo Ogino
  • Patent number: D509770
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: September 20, 2005
    Assignee: YKK Corporation
    Inventors: Yoshikazu Hamada, Yuichi Iwase, Keiichi Keyaki, Kentaro Yamamoto
  • Patent number: D510298
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: October 4, 2005
    Assignee: YKK Corporation
    Inventors: Yoshikazu Hamada, Yuichi Iwase, Keiichi Keyaki, Kenataro Yamamoto
  • Patent number: D511314
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: November 8, 2005
    Assignee: YKK Corporation
    Inventors: Yoshikazu Hamada, Yuichi Iwase, Keiichi Keyaki, Kentaro Yamamoto
  • Patent number: D511315
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: November 8, 2005
    Assignee: YKK Corporation
    Inventors: Yoshikazu Hamada, Yuichi Iwase, Keiichi Keyaki, Kentaro Yamamoto
  • Patent number: D511316
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: November 8, 2005
    Assignee: YKK Corporation
    Inventors: Yoshikazu Hamada, Yuichi Iwase, Keiichi Keyaki, Kentaro Yamamoto
  • Patent number: D511997
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: November 29, 2005
    Assignee: YKK Corporation
    Inventor: Yoshikazu Hamada