Patents by Inventor Yumiko Minegishi

Yumiko Minegishi 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: 8510914
    Abstract: A checker-equipped door hinge device for use in a vehicle includes a check force generating mechanism having a central shaft fixed to a female bracket, a cylinder block fixed to a male bracket and having a cylinder portion, a piston slidably fitted into the cylinder portion, a detent roller supported by the piston, a check spring for urging the piston, and a detent groove provided on an outer peripheral face of the central shaft and with which the detent roller is engaged by urging force of the check spring. The male bracket includes male arm portions for sandwiching the cylinder block inside female arm portions, and a male base portion connected to the male arm portions. The male arm portion is fixedly secured to the cylinder block, and opposite end parts of the central shaft extending through the male arm portion are fixedly secured to the female arm portion.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: August 20, 2013
    Assignee: Rikenkaki Kogyo Kabushiki Kaisha
    Inventor: Yumiko Minegishi
  • Patent number: 8347460
    Abstract: A door hinge device for vehicle includes a checking-force generating mechanism provided between an inner cylinder and an outer cylinder. The checking-force generating mechanism has a holding member attached to the outer cylinder, an elastic member biasing the holding member toward the inner cylinder, a detent roller being held in a holding groove of the holding member, and detent grooves that are provided in an outer peripheral surface of the inner cylinder and are capable of holding the door at a plurality of positions where the door should be stopped by an engagement with the detent roller. The detent roller applies a compression load to the elastic member even in a state where the detent roller is engaged with any of the detent grooves. An assembly groove is provided in the outer peripheral surface of the inner cylinder and allows the detent roller to be inserted into the holding groove in a state where the holding member is in contact with the outer peripheral surface of the inner cylinder.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: January 8, 2013
    Assignee: Rikenkaki Kogyo Kabushiki Kaisha
    Inventor: Yumiko Minegishi
  • Publication number: 20120233814
    Abstract: A checker-equipped door hinge device for use in a vehicle is includes a check force generating mechanism having a central shaft fixed to a female bracket, a cylinder block fixed to a male bracket and having a cylinder portion, a piston slideably fitted into the cylinder portion, a detent roller supported by the piston, a check spring for urging the piston, and a detent groove provided on an outer peripheral face of the central shaft and with which the detent roller is engaged by urging force of the check spring. The male bracket includes male arm portions for sandwiching the cylinder block inside female arm portions, and a male base portion connected to the male arm portions. The male arm portion is fixedly secured to the cylinder block, and opposite end parts of the central shaft extending through the male arm portion are fixedly secured to the female arm portion.
    Type: Application
    Filed: October 27, 2010
    Publication date: September 20, 2012
    Applicant: RIKENKAKI KOGYO KABUSHIKI KAISHA
    Inventor: Yumiko Minegishi
  • Publication number: 20100139044
    Abstract: A door hinge device for vehicle includes a checking-force generating mechanism provided between an inner cylinder and an outer cylinder. The checking-force generating mechanism has a holding member attached to the outer cylinder, an elastic member biasing the holding member toward the inner cylinder, a detent roller being held in a holding groove of the holding member, and detent grooves that are provided in an outer peripheral surface of the inner cylinder and are capable of holding the door at a plurality of positions where the door should be stopped by an engagement with the detent roller. The detent roller applies a compression load to the elastic member even in a state where the detent roller is engaged with any of the detent grooves. An assembly groove is provided in the outer peripheral surface of the inner cylinder and allows the detent roller to be inserted into the holding groove in a state where the holding member is in contact with the outer peripheral surface of the inner cylinder.
    Type: Application
    Filed: October 20, 2009
    Publication date: June 10, 2010
    Applicant: RIKENKAKI KOGYO KABUSHIKI KAISHA
    Inventor: Yumiko MINEGISHI