Patents by Inventor Shuzo Sanda

Shuzo Sanda 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).

  • Speed change control apparatus for toroidal CVT
    Patent number: 7503869
    Abstract: A controller determines a target gear ratio from an accelerator opening and a vehicle speed. The controller determines the stroke of a trunnion on the basis of the difference between present inclination and a target inclination, thereby to control stroke by a hydraulic control valve. The stroke is corrected according to input/output disc pushing force.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: March 17, 2009
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroyuki Nishizawa, Kisaburo Hayakawa, Shuzo Sanda, Masanobu Kimura, Masataka Osawa, Yuji Iwase, Naoto Tanaka, Naoki Moriguchi, Masami Sugaya
  • Friction transmission unit
    Patent number: 6984189
    Abstract: A friction transmission unit for transmitting power between input and output members by means of friction and capable of loss reduction and large torque transmission. Power is transmitted between a planar disk (16) and a roller (10), which contacts the upper surface of the planar disk (16). The profile of the peripheral surface (14) of the roller (10) which actually contacts the upper surface (20) of the disk (16) is expressed as z=a·sin h(bx2). This profile realizes a contact stress distribution which is constant over an area corresponding to approximately 80% in the width direction of the entire contact region. This profile also prevents formation of peak stresses near and at the edges of the contact region and, instead, enables formation of monotonic decrease of stress in areas near the edges.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: January 10, 2006
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Tomohiro Suzuki, Shuzo Sanda, Takanori Abekura, Kazuyoshi Ogawa, Masataka Osawa, Masakatsu Kuroishi, Toshinari Sano
  • Speed change control apparatus for toroidal CVT
    Publication number: 20050124454
    Abstract: A controller determines a target gear ratio from an accelerator opening and a vehicle speed. The controller determines the stroke of a trunnion on the basis of the difference between present inclination and a target inclination, thereby to control stroke by a hydraulic control valve. The stroke is corrected according to input/output disc pushing force.
    Type: Application
    Filed: November 12, 2004
    Publication date: June 9, 2005
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroyuki Nishizawa, Kisaburo Hayakawa, Shuzo Sanda, Masanobu Kimura, Masataka Osawa, Yuji Iwase, Naoto Tanaka, Naoki Moriguchi, Masami Sugaya
  • Friction transmission unit
    Publication number: 20030040400
    Abstract: A friction transmission unit for transmitting power between input and output members by means of friction and capable of loss reduction and large torque transmission. Power is transmitted between a planar disk (16) and a roller (10), which contacts the upper surface of the planar disk (16). The profile of the peripheral surface (14) of the roller (10) which actually contacts the upper surface (20) of the disk (16) is expressed as z=a·sinh(bx2) This profile realizes a contact stress distribution which is constant over an area corresponding to approximately 80% in the width direction of the entire contact region. This profile also prevents formation of peak stresses near and at the edges of the contact region and, instead, enables formation of monotonic decrease of stress in areas near the edges.
    Type: Application
    Filed: February 8, 2002
    Publication date: February 27, 2003
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Tomohiro Suzuki, Shuzo Sanda, Takanori Abekura, Kazuyoshi Ogawa, Masataka Osawa, Masakatsu Kuroishi, Toshinari Sano