Patents by Inventor Yoshiteru Igarashi

Yoshiteru Igarashi 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: 11313412
    Abstract: Provided is a slide bearing capable of retaining strength while achieving weight reduction and cost-cutting. The slide bearing has an upper case (2) to be attached to an upper support for attaching a suspension to a vehicle body, a lower case (3) rotatably combined with the upper case (2), an annular center plate (4) located between the upper case (2) and the lower case (3), and an annular sliding sheet (5) located between the upper case (2) and the center plate (4). The lower case (3) has a lower case body (31) in a substantial cylindrical shape, a flange part (32) projecting radially outward from an outer peripheral surface of the lower case body (31), and hollow sections (321) formed on an outer peripheral surface of the flange part (32). A plurality of the hollow sections (321) are formed at equal intervals in a circumferential direction on the outer peripheral surface of the flange part (32).
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: April 26, 2022
    Assignee: OILES CORPORATION
    Inventors: Tomohiro Yamada, Yoshiteru Igarashi, Kouichi Morishige
  • Publication number: 20200284294
    Abstract: Provided is a slide bearing capable of retaining strength while achieving weight reduction and cost-cutting. The slide bearing has an upper case (2) to be attached to an upper support for attaching a suspension to a vehicle body, a lower case (3) rotatably combined with the upper case (2), an annular center plate (4) located between the upper case (2) and the lower case (3), and an annular sliding sheet (5) located between the upper case (2) and the center plate (4). The lower case (3) has a lower case body (31) in a substantial cylindrical shape, a flange part (32) projecting radially outward from an outer peripheral surface of the lower case body (31), and hollow sections (321) formed on an outer peripheral surface of the flange part (32). A plurality of the hollow sections (321) are formed at equal intervals in a circumferential direction on the outer peripheral surface of the flange part (32).
    Type: Application
    Filed: August 30, 2018
    Publication date: September 10, 2020
    Inventors: Tomohiro YAMADA, Yoshiteru IGARASHI, Kouichi MORISHIGE
  • Publication number: 20200171905
    Abstract: The purpose of the present invention is to improve the driving stability of a vehicle in which a double wishbone type or multi-link type suspension is adopted. A double wishbone type suspension has a sliding bearing disposed between a coil spring provided coaxially with a shock absorber and an upper support for mounting the coil spring to the body of the vehicle along with the shock absorber, the sliding bearing permitting the coil spring and the upper support to rotate relative to each other. The sliding bearing permits the coil spring and the upper support to rotate relative to each other with torque lower than torque generated by the torsion of the coil spring caused by the load of the vehicle acting on a damper assembly.
    Type: Application
    Filed: August 2, 2018
    Publication date: June 4, 2020
    Inventors: Yoshiteru IGARASHI, Kouichi MORISHIGE, Tsuyoshi NAGASHIMA
  • Patent number: 9707816
    Abstract: A synthetic resin-made sliding bearing includes a synthetic resin-made upper casing which is fixed to a vehicle body side through a mounting member; a synthetic resin-made lower casing which is superposed on the upper casing so as to be rotatable about an axis in a circumferential direction relative to the upper casing; and a synthetic resin-made sliding bearing piece disposed in a space between the upper casing and the lower casing.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: July 18, 2017
    Assignees: OILES CORPORATION, OILES DEUTSCHLAND GMBH
    Inventors: Yoshikazu Sakairi, Katsunori Saito, Robert Hamrodi, Kai Metzler, Yoshiteru Igarashi
  • Patent number: 9623714
    Abstract: A synthetic resin-made sliding bearing 1 includes a synthetic resin-made upper casing 2 which is fixed to a mounting member on a vehicle body side; a reinforced synthetic resin-made lower casing 3 which is superposed on the upper casing 2 so as to be rotatable about an axis O in a circumferential direction R relative to the upper casing 2; a metallic reinforcing member 4; and a synthetic resin-made sliding bearing piece 5 disposed in a space S between the upper casing 2 and the lower casing 3.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: April 18, 2017
    Assignees: OILES CORPORATION, OILES DEUTSCHLAND GMBH
    Inventors: Yoshikazu Sakairi, Katsunori Saito, Robert Hamrodi, Kai Metzler, Yoshiteru Igarashi
  • Publication number: 20170072759
    Abstract: A synthetic resin-made sliding bearing includes a synthetic resin-made upper casing which is fixed to a vehicle body side through a mounting member; a synthetic resin-made lower casing which is superposed on the upper casing so as to be rotatable about an axis in a circumferential direction relative to the upper casing; and a synthetic resin-made sliding bearing piece disposed in a space between the upper casing and the lower casing.
    Type: Application
    Filed: November 29, 2016
    Publication date: March 16, 2017
    Inventors: Yoshikazu SAKAIRI, Katsunori SAITO, Robert HAMRODI, Kai METZLER, Yoshiteru IGARASHI
  • Patent number: 9556906
    Abstract: A synthetic resin-made sliding bearing 1 includes a synthetic resin-made upper casing 2 which is fixed to a mounting member on a vehicle body side through a mounting member; a synthetic resin-made lower casing 3 which is superposed on the upper casing 2 so as to be rotatable about an axis O in a circumferential direction R relative to the upper casing 2; and a synthetic resin-made sliding bearing piece 5 disposed in a space 4 between the upper casing 2 and the lower casing 3.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: January 31, 2017
    Assignees: OILES CORPORATION, OILES DEUTSCHLAND GMBH
    Inventors: Yoshikazu Sakairi, Katsunori Saito, Robert Hamrodi, Kai Metzler, Yoshiteru Igarashi
  • Patent number: 9539874
    Abstract: A synthetic resin-made sliding bearing 1 includes a synthetic resin-made upper casing 2 which is fixed to a vehicle body side through a mounting member; a synthetic resin-made lower casing 3 which is superposed on the upper casing 2 so as to be rotatable about an axis O in a circumferential direction R relative to the upper casing 2; and a synthetic resin-made sliding bearing piece 5 disposed in a space 4 between the upper casing 2 and the lower casing 3.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: January 10, 2017
    Assignees: OILES CORPORATION, OILES DEUTSCHLAND GMBH
    Inventors: Yoshikazu Sakairi, Katsunori Saito, Robert Hamrodi, Kai Metzler, Yoshiteru Igarashi
  • Patent number: 9415656
    Abstract: A synthetic resin-made sliding bearing 1 includes a synthetic resin-made upper casing 2 which is fixed to a vehicle body side through a mounting member; a reinforced synthetic resin-made lower casing 3 which is superposed on the upper casing 2 so as to be rotatable about an axis O in a circumferential direction R relative to the upper casing 2; and a synthetic resin-made sliding bearing piece 5 disposed in a space 4 between the upper casing 2 and the lower casing 3.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: August 16, 2016
    Assignee: Oiles Corporation
    Inventors: Yoshikazu Sakairi, Katsunori Saito, Robert Hamrodi, Kai Metzler, Yoshiteru Igarashi
  • Patent number: 9315127
    Abstract: A damper includes a vessel for accommodating a viscous fluid in its interior; hampering walls for hampering the flow of the viscous fluid; a partitioning member which partitions each of interior portions into two chambers and is provided rotatably; a communicating hole formed in the partitioning member so as to allow the two chambers to communicate with each other via a variable passage whose passage cross-sectional area changes; a flow limiter to limit the flow of the viscous fluid in the chamber into the chamber through the communicating hole, when the internal pressure of the viscous fluid accommodated in the chamber has exceeded a fixed value on the basis of the rotation of the partitioning member; and a resilient structure to resiliently urge the partitioning member in a direction with respect to the vessel.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: April 19, 2016
    Assignee: Oiles Corporation
    Inventors: Akihiko Okimura, Yoshiteru Igarashi, Naohiro Horita
  • Publication number: 20160082800
    Abstract: A synthetic resin-made sliding bearing 1 includes a synthetic resin-made upper casing 2 which is fixed to a vehicle body side through a mounting member; a reinforced synthetic resin-made lower casing 3 which is superposed on the upper casing 2 so as to be rotatable about an axis O in a circumferential direction R relative to the upper casing 2; and a synthetic resin-made sliding bearing piece 5 disposed in a space 4 between the upper casing 2 and the lower casing 3.
    Type: Application
    Filed: March 5, 2014
    Publication date: March 24, 2016
    Applicants: Oiles Corporation, Oiles Deutschland GMBH
    Inventors: Yoshikazu SAKAIRI, Katsunori SAITO, Robert HAMRODI, Kai METZLER, Yoshiteru IGARASHI
  • Publication number: 20150377286
    Abstract: A synthetic resin-made sliding bearing 1 includes a synthetic resin-made upper casing 2 which is fixed to a mounting member on a vehicle body side through a mounting member; a synthetic resin-made lower casing 3 which is superposed on the upper casing 2 so as to be rotatable about an axis O in a circumferential direction R relative to the upper casing 2; and a synthetic resin-made sliding bearing piece 5 disposed in a space 4 between the upper casing 2 and the lower casing 3.
    Type: Application
    Filed: February 5, 2014
    Publication date: December 31, 2015
    Applicants: OILES CORPORATION, OILES DEUTSCHLAND GMBH
    Inventors: Yoshikazu SAKAIRI, Katsunori SAITO, Robert HAMRODI, Kai METZLER, Yoshiteru IGARASHI
  • Publication number: 20150375591
    Abstract: A synthetic resin-made sliding bearing 1 includes a synthetic resin-made upper casing 2 which is fixed to a vehicle body side through a mounting member; a synthetic resin-made lower casing 3 which is superposed on the upper casing 2 so as to be rotatable about an axis O in a circumferential direction R relative to the upper casing 2; and a synthetic resin-made sliding bearing piece 5 disposed in a space 4 between the upper casing 2 and the lower casing 3.
    Type: Application
    Filed: February 4, 2014
    Publication date: December 31, 2015
    Inventors: Yoshikazu SAKAIRI, Katsunori SAITO, Robert HAMRODI, Kai METZLER, Yoshiteru IGARASHI
  • Publication number: 20150354629
    Abstract: A synthetic resin-made sliding bearing 1 includes a synthetic resin-made upper casing 2 which is fixed to a mounting member on a vehicle body side; a reinforced synthetic resin-made lower casing 3 which is superposed on the upper casing 2 so as to be rotatable about an axis O in a circumferential direction R relative to the upper casing 2; a metallic reinforcing member 4; and a synthetic resin-made sliding bearing piece 5 disposed in a space S between the upper casing 2 and the lower casing 3.
    Type: Application
    Filed: January 27, 2014
    Publication date: December 10, 2015
    Applicants: OILES CORPORATION, OILES DEUTSCHLAND GMBH
    Inventors: Yoshikazu SAKAIRI, Katsunori SAITO, Robert HAMRODI, Kai METZLER, Yoshiteru IGARASHI
  • Patent number: 9163692
    Abstract: A rotary damper 1 includes a synthetic resin-made accommodating case 4 for accommodating in its interior 2 a viscous fluid 3 which is constituted by silicone oil or the like and whose viscosity declines with a temperature rise, and a synthetic resin-made rotor 9 which is disposed in the interior 2 of the accommodating case 4 rotatably, i.e., so as to be rotatable in R1 and R2 directions about an axis O, and which partitions the interior 2 of the accommodating case 4 into at least two chambers, i.e., in this embodiment, two chambers consisting of chambers 5 and 6 and two chambers consisting of chambers 7 and 8, in cooperation with the accommodating case 4.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: October 20, 2015
    Assignee: Oiles Corporation
    Inventors: Masamitsu Kojima, Akihiko Okimura, Yoshiteru Igarashi, Naohiro Horita
  • Patent number: 8869957
    Abstract: A damper 1 includes a vessel 4 for accommodating a viscous fluid 3 in its interior 2; hampering walls 5 and 6 for hampering the flow of the viscous fluid 3; a partitioning member 11 which partitions each of interior portions 7 and 8 into two chambers 9 and 10 and is provided rotatably; a communicating hole 13 formed in the partitioning member 11 so as to allow the two chambers 9 and 10 to communicate with each other via a variable passage 12 whose passage cross-sectional area changes; a flow limiting means 14 for limiting the flow of the viscous fluid 3 in the chamber 9 into the chamber 10 through the communicating hole 13, when the internal pressure of the viscous fluid 3 accommodated in the chamber 9 has exceeded a fixed value on the basis of the rotation of the partitioning member 11; and a resilient means 15 for resiliently urging the partitioning member 11 in an R2 direction with respect to the vessel 4.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: October 28, 2014
    Assignee: Oiles Corporation
    Inventors: Akihiko Okimura, Yoshiteru Igarashi, Naohiro Horita
  • Publication number: 20140300151
    Abstract: A damper includes a vessel for accommodating a viscous fluid in its interior; hampering walls for hampering the flow of the viscous fluid; a partitioning member which partitions each of interior portions into two chambers and is provided rotatably; a communicating hole formed in the partitioning member so as to allow the two chambers to communicate with each other via a variable passage whose passage cross-sectional area changes; a flow limiter to limit the flow of the viscous fluid in the chamber into the chamber through the communicating hole, when the internal pressure of the viscous fluid accommodated in the chamber has exceeded a fixed value on the basis of the rotation of the partitioning member; and a resilient structure to resiliently urge the partitioning member in a direction with respect to the vessel.
    Type: Application
    Filed: May 28, 2014
    Publication date: October 9, 2014
    Applicant: OILES CORPORATION
    Inventors: Akihiko OKIMURA, Yoshiteru IGARASHI, Naohiro HORITA
  • Patent number: 8813899
    Abstract: A damper is provided which damps an applied external force in accordance with the strength of the external force (impact strength). The damper 10 comprises a vessel 20 having a cylindrical chamber 21 filled with a viscous fluid, a turn member 60 turned by the external force, a slider member 40 which is moved in the chamber 21 of the vessel 20 by turn of the turn member 60, partition member 80 engaged with the slider member 40, a coiled spring 100 for energizing the slider member 40 toward the turn member 60, and a resin cap 100 blocking an opening of the vessel 20.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: August 26, 2014
    Assignee: Oiles Corporation
    Inventors: Yoshiteru Igarashi, Akihiko Okimura
  • Patent number: 8757337
    Abstract: A rotary damper 1 includes a synthetic resin-made accommodating case 4 for accommodating in its interior 2 a viscous fluid 3 which is constituted by silicone oil or the like and whose viscosity declines with a temperature rise, and a synthetic resin-made rotor 9 which is disposed in the interior 2 of the accommodating case 4 rotatably, i.e., so as to be rotatable in R1 and R2 directions about an axis O, and which partitions the interior 2 of the accommodating case 4 into at least two chambers, i.e., in this embodiment, two chambers consisting of chambers 5 and 6 and two chambers consisting of chambers 7 and 8, in cooperation with the accommodating case 4.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: June 24, 2014
    Assignee: Oiles Corporation
    Inventors: Masamitsu Kojima, Akihiko Okimura, Yoshiteru Igarashi, Naohiro Horita
  • Publication number: 20140014449
    Abstract: A rotary damper 1 includes a synthetic resin-made accommodating case 4 for accommodating in its interior 2 a viscous fluid 3 which is constituted by silicone oil or the like and whose viscosity declines with a temperature rise, and a synthetic resin-made rotor 9 which is disposed in the interior 2 of the accommodating case 4 rotatably, i.e., so as to be rotatable in R1 and R2 directions about an axis O, and which partitions the interior 2 of the accommodating case 4 into at least two chambers, i.e., in this embodiment, two chambers consisting of chambers 5 and 6 and two chambers consisting of chambers 7 and 8, in cooperation with the accommodating case 4.
    Type: Application
    Filed: September 16, 2013
    Publication date: January 16, 2014
    Applicant: OILES CORPORATION
    Inventors: Masamitsu KOJIMA, Akihiko OKIMURA, Yoshiteru IGARASHI, Naohiro HORITA