Patents by Inventor Kenichiro Imaeda

Kenichiro Imaeda 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: 8071003
    Abstract: A method of manufacturing a vibration damping bushing wherein after setting a main shaft member on a lower mold, an medial sleeve is set to be disposed about the main shaft member, and a plurality of sections are moved forward in a centripetal direction to form an intermediate mold together, and then an upper mold is superposed onto the intermediate mold to form a mold cavity therein. At least one positioning protrusion is formed on a cavity defining face, being discontinuous in a circumferential direction, while being located at either semi-circumference of the cavity defining face with any diametric line interposed therebetween. The medial sleeve is set in position in an axis-perpendicular direction within the mold cavity by holding the positioning protrusions in contact against an outer peripheral face of the medial sleeve. A vibration damping bushing manufactured by this method is also disclosed.
    Type: Grant
    Filed: March 24, 2008
    Date of Patent: December 6, 2011
    Assignee: Tokai Rubber Industries, Ltd.
    Inventor: Kenichiro Imaeda
  • Publication number: 20080237951
    Abstract: A method of manufacturing a vibration damping bushing wherein after setting a main shaft member on a lower mold, an medial sleeve is set to be disposed about the main shaft member, and a plurality of sections are moved forward in a centripetal direction to form an intermediate mold together, and then an upper mold is superposed onto the intermediate mold to form a mold cavity therein. At least one positioning protrusion is formed on a cavity defining face, being discontinuous in a circumferential direction, while being located at either semi-circumference of the cavity defining face with any diametric line interposed therebetween. The medial sleeve is set in position in an axis-perpendicular direction within the mold cavity by holding the positioning protrusions in contact against an outer peripheral face of the medial sleeve. A vibration damping bushing manufactured by this method is also disclosed.
    Type: Application
    Filed: March 24, 2008
    Publication date: October 2, 2008
    Applicant: TOKAI RUBBER INDUSTRIES, LTD.
    Inventor: Kenichiro Imaeda
  • Patent number: 7052002
    Abstract: A vibration damping device includes an inner cylinder member having a first outer flange extending diametrically outward from its one axial end; an outer cylinder member having a second outer flange extending diametrically outward at its one axial end; and a rubber elastic body elastically connecting the inner cylinder member and the outer cylinder member, while having an end section sandwiched between sandwiched between the first and second outer flanges. The rubber elastic body is provided with hollow portions recessed diametrically inward from an outside periphery of the first outer flange at three or four locations in a circumferential direction of the end section of the rubber elastic body.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: May 30, 2006
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Kenichiro Imaeda, Hiroaki Hori
  • Publication number: 20050179179
    Abstract: A vibration damping device includes an inner cylinder member having a first outer flange extending diametrically outward from its one axial end; an outer cylinder member having a second outer flange extending diametrically outward at its one axial end; and a rubber elastic body elastically connecting the inner cylinder member and the outer cylinder member, while having an end section sandwiched between sandwiched between the first and second outer flanges. The rubber elastic body is provided with hollow portions recessed diametrically inward from an outside periphery of the first outer flange at three or four locations in a circumferential direction of the end section of the rubber elastic body.
    Type: Application
    Filed: February 2, 2005
    Publication date: August 18, 2005
    Applicant: TOKAI RUBBER INDUSTRIES, LTD.
    Inventors: Kenichiro Imaeda, Hiroaki Hori