Patents by Inventor Yasunobu Kurota

Yasunobu Kurota 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: 11773938
    Abstract: A liquid sealed damper includes: an attachment portion attached to a peripheral portion of an opening of a vehicle or an opening and closing member for covering the opening; a contact portion to which an external force is input; an insulator configured to isolate vibration and connect the attachment portion and the contact portion; a main liquid chamber in which working liquid is sealed; an auxiliary liquid chamber having a wall portion formed of a diaphragm; and an orifice passage formed in the partition member and communicating with the main liquid chamber and the auxiliary liquid chamber. The partition member has a substantially circular surface forming a wall portion of the main liquid chamber. An opening portion at one end of the orifice passage is formed in the circular surface. The opening portion is formed to extend from an outer edge portion to a central portion of the circular surface.
    Type: Grant
    Filed: October 21, 2021
    Date of Patent: October 3, 2023
    Assignees: YAMASHITA RUBBER CO., LTD., HONDA MOTOR CO., LTD.
    Inventors: Yuichi Nakamaru, Hideyuki Koguchi, Yasunobu Kurota, Takashi Kondo, Hideki Matsuoka
  • Patent number: 11585139
    Abstract: A liquid sealed damper includes: an attachment portion attached to a peripheral portion of an opening of a vehicle or an opening and closing member for covering the opening; a contact portion to which an external force is input; an insulator configured to isolate vibration and connect the attachment portion and the contact portion; a main liquid chamber in which working liquid is sealed, the insulator serving as a wall portion of the main liquid chamber; an auxiliary liquid chamber divided from the main liquid chamber by a partition member and having a wall portion formed of a diaphragm; and an orifice passage formed in the partition member and communicating with the main liquid chamber and the auxiliary liquid chamber. The partition member has an inner gap in the shape of a recess, and a part of the diaphragm is inserted into the inner gap.
    Type: Grant
    Filed: November 12, 2021
    Date of Patent: February 21, 2023
    Assignees: TAMASHITA RUBBER CO., LTD., HONDA MOTOR CO., LTD.
    Inventors: Yuichi Nakamaru, Hideyuki Koguchi, Yasunobu Kurota, Takashi Kondo, Hideki Matsuoka
  • Publication number: 20220127890
    Abstract: A liquid sealed damper includes: an attachment portion attached to a peripheral portion of an opening of a vehicle or an opening and closing member for covering the opening; a contact portion to which an external force is input; an insulator configured to isolate vibration and connect the attachment portion and the contact portion; a main liquid chamber in which working liquid is sealed; an auxiliary liquid chamber having a wall portion formed of a diaphragm; and an orifice passage formed in the partition member and communicating with the main liquid chamber and the auxiliary liquid chamber. The partition member has a substantially circular surface forming a wall portion of the main liquid chamber. An opening portion at one end of the orifice passage is formed in the circular surface. The opening portion is formed to extend from an outer edge portion to a central portion of the circular surface.
    Type: Application
    Filed: October 21, 2021
    Publication date: April 28, 2022
    Inventors: Yuichi Nakamaru, Hideyuki Koguchi, Yasunobu Kurota, Takashi Kondo, Hideki Matsuoka
  • Publication number: 20220128112
    Abstract: A liquid sealed damper includes: an attachment portion attached to a peripheral portion of an opening of a vehicle or an opening and closing member for covering the opening; a contact portion to which an external force is input; an insulator configured to isolate vibration and connect the attachment portion and the contact portion; a main liquid chamber in which working liquid is sealed; an auxiliary liquid chamber having a wall portion formed of a diaphragm; and an orifice passage formed in the partition member and communicating with the main liquid chamber and the auxiliary liquid chamber. The partition member has a substantially circular surface forming a wall portion of the main liquid chamber. An opening portion at one end of the orifice passage is formed in the circular surface. The opening portion is formed to extend from an outer edge portion to a central portion of the circular surface.
    Type: Application
    Filed: October 21, 2021
    Publication date: April 28, 2022
    Inventors: Yuichi Nakamaru, Hideyuki Koguchi, Yasunobu Kurota, Takashi Kondo, Hideki Matsuoka
  • Publication number: 20220127891
    Abstract: A liquid sealed damper includes: an attachment portion attached to a peripheral portion of an opening of a vehicle or an opening and closing member for covering the opening; a contact portion to which an external force is input; an insulator configured to isolate vibration and connect the attachment portion and the contact portion; a main liquid chamber in which working liquid is sealed, the insulator serving as a wall portion of the main liquid chamber; an auxiliary liquid chamber divided from the main liquid chamber by a partition member and having a wall portion formed of a diaphragm; and an orifice passage formed in the partition member and communicating with the main liquid chamber and the auxiliary liquid chamber. The partition member has an inner gap in the shape of a recess, and a part of the diaphragm is inserted into the inner gap.
    Type: Application
    Filed: November 12, 2021
    Publication date: April 28, 2022
    Inventors: Yuichi Nakamaru, Hideyuki Koguchi, Yasunobu Kurota, Takashi Kondo, Hideki Matsuoka