Patents by Inventor Ichiro Usui

Ichiro Usui 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: 9416845
    Abstract: A damper with a torque limiter is provided in which a torque limiter is formed from an annular limiter housing formed on a mass ring, a friction plate frictionally engaging with the limiter housing a pressure-applying plate that frictionally engages with the friction plate and that is linked to the mass ring, and a limiter spring urging the pressure-applying plate toward the friction plate side, a spring holder is formed from a pair of first and second holder plates that oppose each other to define a damper housing and that are joined to each other by a rivet, and the friction plate is formed integrally with the second holder plate. Thus, a rivet providing a link between a pair of holder plates forming a spring holder does not carry the burden of torque transmission, enabling the diameter of the rivet to be smaller and thereby reducing weight and cost.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: August 16, 2016
    Assignee: Yutaka Giken Co., Ltd.
    Inventors: Ichiro Usui, Takanori Makita
  • Publication number: 20150377319
    Abstract: A damper with a torque limiter is provided in which a torque limiter is formed from an annular limiter housing formed on a mass ring, a friction plate frictionally engaging with the limiter housing a pressure-applying plate that frictionally engages with the friction plate and that is linked to the mass ring, and a limiter spring urging the pressure-applying plate toward the friction plate side, a spring holder is formed from a pair of first and second holder plates that oppose each other to define a damper housing and that are joined to each other by a rivet, and the friction plate is formed integrally with the second holder plate. Thus, a rivet providing a link between a pair of holder plates forming a spring holder does not carry the burden of torque transmission, enabling the diameter of the rivet to be smaller and thereby reducing weight and cost.
    Type: Application
    Filed: January 30, 2014
    Publication date: December 31, 2015
    Applicant: YUTAKA GIKEN CO., LTD.
    Inventors: Ichiro USUI, Takanori MAKITA
  • Patent number: 8371948
    Abstract: A flywheel device includes a mass-side rotor including a mass ring and a pair of holder plates connected to both sides of the mass ring. The mass-side rotor is connected to a crankshaft with a drive plate therebetween. Between the mass-side rotor and the drive plate, a positioning apparatus for positioning those coaxially with each other is provided. The positioning apparatus includes: an annular positioning protrusion which is press formed in at least one of the pair of holder plates to project laterally outward therefrom, and which is disposed coaxially with the mass-side rotor; and a positioning recessed portion which is press formed in the drive plate coaxially with the crankshaft, and which is fitted to the positioning protrusion. Accordingly, it is possible to enable coaxial positioning of the mass-side rotor and the drive plate without performing burdensome machining on the mass ring for forming a positioning apparatus.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: February 12, 2013
    Assignee: Yutaka Giken Co., Ltd.
    Inventors: Ichiro Usui, Hiroyuki Saito
  • Publication number: 20110244967
    Abstract: A flywheel device includes a mass-side rotor including a mass ring and a pair of holder plates connected to both sides of the mass ring. The mass-side rotor is connected to a crankshaft with a drive plate therebetween. Between the mass-side rotor and the drive plate, a positioning apparatus for positioning those coaxially with each other is provided. The positioning apparatus includes: an annular positioning protrusion which is press formed in at least one of the pair of holder plates to project laterally outward therefrom, and which is disposed coaxially with the mass-side rotor; and a positioning recessed portion which is press formed in the drive plate coaxially with the crankshaft, and which is fitted to the positioning protrusion. Accordingly, it is possible to enable coaxial positioning of the mass-side rotor and the drive plate without performing burdensome machining on the mass ring for forming a positioning apparatus.
    Type: Application
    Filed: March 9, 2011
    Publication date: October 6, 2011
    Applicant: YUTAKA GIKEN CO., LTD.
    Inventors: Ichiro USUI, Hiroyuki Saito
  • Patent number: 5349263
    Abstract: A pointing device for use in moving a cursor displayed on a display, includes a pressure sensing sheet including first through fourth pressure detection elements and a base member mounted on the pressure sensing sheet. The base member is provided with first through fourth protrusions formed on its under surface opposite to the pressure sensing sheet in facing relation to the first through fourth pressure detection elements, respectively. The base member is provided with an operation shaft formed on an upper surface of the base member which projects upwardly therefrom. The device further comprises a cap member coupled to the operation shaft of the base member.
    Type: Grant
    Filed: October 6, 1992
    Date of Patent: September 20, 1994
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Sumio Katayama, Junichi Iwasaki, Shuichi Toi, Ichiro Usui, Takashi Yanase
  • Patent number: 5349370
    Abstract: In a signal processing circuit for a pointing device comprising first, second, third, and fourth pressure detection elements corresponding to the movement of a cursor in an X-axis plus direction, an X-axis minus direction, a Y-axis plus direction, and a Y-axis minus direction, respectively, a first processing circuit processes a first pressure detection signal from the first pressure detection element to produce a first move signal representative of a cursor moving value in the X-axis plus direction. A second processing circuit processes a second pressure detection signal from the second pressure detection element to produce a second move signal representative of a cursor moving value in the X-axis minus direction. A third processing circuit processes a third pressure detection signal from the third pressure detection element to produce a third move signal representative of a cursor moving value in the Y-axis plus direction.
    Type: Grant
    Filed: October 6, 1992
    Date of Patent: September 20, 1994
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Sumio Katayama, Ichiro Usui, Takashi Yanase