Patents by Inventor Kyoichi Kawafune

Kyoichi Kawafune 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: 7669336
    Abstract: A rechargeable electric shaver having a partition wall installed inside the main body casing, the partition wall separating a rechargeable battery compartment that accommodates the rechargeable battery and a driving portion compartment that accommodates a motor, and the partition wall having a sealing structure which allows a main body of the motor to protrude into the rechargeable battery compartment and seals the rechargeable battery compartment and driving portion compartment in an airtight manner.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: March 2, 2010
    Assignee: Izumi Products Company
    Inventor: Kyoichi Kawafune
  • Publication number: 20040237309
    Abstract: A rechargeable electric shaver having a partition wall installed inside the main body casing, the partition wall separating a rechargeable battery compartment that accommodates the rechargeable battery and a driving portion compartment that accommodates a motor, and the partition wall having a sealing structure which allows a main body of the motor to protrude into the rechargeable battery compartment and seals the rechargeable battery compartment and driving portion compartment in an airtight manner.
    Type: Application
    Filed: May 27, 2004
    Publication date: December 2, 2004
    Applicant: IZUMI PRODUCTS COMPANY
    Inventor: Kyoichi Kawafune
  • Patent number: 6823590
    Abstract: An electric rotary shaver comprising: a cutter frame having a plurality of outer cutter holes, outer cutters disposed in outer cutter holes so as to be tiltable in any direction, and inner cutters rotatably disposed inside the outer cutters and connected to inner cutter drive shafts that are rotationally driven and urged in a direction that causes the inner cutter drive shafts to protrude outward; wherein a cutter retaining plate is provided inside the cutter frame so as to be on a main body side of the electric shaver, and fulcrum plates are tiltably shaft-supported in the cutter retaining plate so as to be positionally correspond to the outer cutter holes; and the outer cutters are shaft-supported in the fulcrum plates via supporting members in a direction that is perpendicular to the direction in which the fulcrum plates are shaft-supported by the cutter retaining plate, thus being tiltable.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: November 30, 2004
    Assignee: Izumi Products Company
    Inventors: Hiromi Uchiyama, Tsuyoshi Nakano, Kyoichi Kawafune, Yukio Izumi
  • Patent number: 6671960
    Abstract: An electric rotary shaver including a cutter retaining plate equipped with cutter units each having an inner cutter and an outer cutter and detachably attached to an outer cutter frame of the shaver, and the shaver further including an attachment-detachment mechanism for mounting the cutter retaining plate to the outer cutter frame in a detachable fashion. The attachment-detachment mechanism includes a triangular boss and an engagement projection. The triangular boss is formed on the outer cutter frame and has engagement openings opened in its side surfaces, and the engagement projection is formed on a mounting knob held in cutter retaining plate. By turning the mounting knob with its engagement projection inserted in the boss and thus letting the engagement projection be engaged with the engagement opening, the cutter retaining plate is mounted to the outer cutter frame of the shaver in a detachable fashion.
    Type: Grant
    Filed: May 16, 2002
    Date of Patent: January 6, 2004
    Assignee: Izumi Products Company
    Inventors: Kyoichi Kawafune, Tsuyoshi Nakano, Hiromi Uchiyama
  • Publication number: 20020174546
    Abstract: An electric rotary shaver including a cutter retaining plate equipped with cutter units each having an inner cutter and an outer cutter and detachably attached to an outer cutter frame of the shaver, and the shaver further including an attachment-detachment mechanism for mounting the cutter retaining plate to the outer cutter frame in a detachable fashion. The attachment-detachment mechanism includes a triangular boss and an engagement projection. The triangular boss is formed on the outer cutter frame and has engagement openings opened in its side surfaces, and the engagement projection is formed on a mounting knob held in cutter retaining plate. By turning the mounting knob with its engagement projection inserted in the boss and thus letting the engagement projection be engaged with the engagement opening, the cutter retaining plate is mounted to the outer cutter frame of the shaver in a detachable fashion.
    Type: Application
    Filed: May 16, 2002
    Publication date: November 28, 2002
    Applicant: IZUMI PRODUCTS COMPANY
    Inventors: Kyoichi Kawafune, Tsuyoshi Nakano, Hiromi Uchiyama
  • Publication number: 20020062565
    Abstract: An electric rotary shaver comprising: a cutter frame having a plurality of outer cutter holes, outer cutters disposed in outer cutter holes so as to be tiltable in any direction, and inner cutters rotatably disposed inside the outer cutters and connected to inner cutter drive shafts that are rotationally driven and urged in a direction that causes the inner cutter drive shafts to protrude outward; wherein a cutter retaining plate is provided inside the cutter frame so as to be on a main body side of the electric shaver, and fulcrum plates are tiltably shaft-supported in the cutter retaining plate so as to be positionally correspond to the outer cutter holes; and the outer cutters are shaft-supported in the fulcrum plates via supporting members in a direction that is perpendicular to the direction in which the fulcrum plates are shaft-supported by the cutter retaining plate, thus being tiltable.
    Type: Application
    Filed: January 12, 2001
    Publication date: May 30, 2002
    Inventors: Hiromi Uchiyama, Tsuyoshi Nakano, Kyoichi Kawafune, Yukio Izumi
  • Patent number: D549391
    Type: Grant
    Filed: July 28, 2004
    Date of Patent: August 21, 2007
    Assignee: Izumi Products Company
    Inventor: Kyoichi Kawafune