Patents by Inventor Tsutomu KOMIYA

Tsutomu KOMIYA 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).

  • Vane pump and vane pump manufacturing method
    Patent number: 9995301
    Abstract: A vane pump includes a rotor; a plurality of vanes; a cam ring; and a pump body having an accommodating concave portion accommodating the cam ring. The cam ring includes a ring fitting portions formed in a plurality of regions on an outer circumference and a ring small-diameter portions formed on the outer circumference so as to have an outer diameter smaller than those of the ring fitting portions. The accommodating concave portion has a body fitting portion to which the ring fitting portions is fitted and a body large-diameter portions formed on the inner circumference in a plurality of regions so as to have an inner diameter lager than that of the body fitting portions.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: June 12, 2018
    Assignee: KYB Corporation
    Inventors: Masamichi Sugihara, Tomoyuki Fujita, Tomoyuki Nakagawa, Tsutomu Komiya
  • VANE PUMP AND VANE PUMP MANUFACTURING METHOD
    Publication number: 20170067462
    Abstract: A vane pump includes a rotor; a plurality of vanes; a cam ring; and a pump body having an accommodating concave portion accommodating the cam ring. The cam ring includes a ring fitting portions formed in a plurality of regions on an outer circumference and a ring small-diameter portions formed on the outer circumference so as to have an outer diameter smaller than those of the ring fitting portions. The accommodating concave portion has a body fitting portion to which the ring fitting portions is fitted and a body large-diameter portions formed on the inner circumference in a plurality of regions so as to have an inner diameter lager than that of the body fitting portions.
    Type: Application
    Filed: March 4, 2015
    Publication date: March 9, 2017
    Applicant: KYB Corporation
    Inventors: Masamichi SUGIHARA, Tomoyuki FUJITA, Tomoyuki NAKAGAWA, Tsutomu KOMIYA