Patents by Inventor Norio Yanagawa

Norio Yanagawa 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: 9422904
    Abstract: Vehicle engine starting apparatus of automatically restarting an engine by quickly responding to a subsequent engine restart request even if engagement of a pinion gear with a ring gear is failed in the process of a stop of the engine. Pinion gear is displaced such that the pinion gear is engaged with the ring gear at a timing (when rotation speed of the pinion gear and rotation speed of the engine are nearly synchronized with each other with a signal from a control device when a predetermined condition is met. Where an engagement sensor has transmitted a signal “H” indicating engagement failure, when restart of the engine becomes necessary, the pinion gear is displaced toward a ring gear side by the control device.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: August 23, 2016
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Shigehiko Omata, Shigenori Nakazato, Norio Yanagawa, Shingo Kitajima, Atsushi Saeki, Yoshiaki Nagasawa
  • Publication number: 20140053684
    Abstract: Vehicle engine starting apparatus of automatically restarting an engine by quickly responding to a subsequent engine restart request even if engagement of a pinion gear with a ring gear is failed in the process of a stop of the engine. Pinion gear is displaced such that the pinion gear is engaged with the ring gear at a timing (when rotation speed of the pinion gear and rotation speed of the engine are nearly synchronized with each other with a signal from a control device when a predetermined condition is met. Where an engagement sensor has transmitted a signal “H” indicating engagement failure, when restart of the engine becomes necessary, the pinion gear is displaced toward a ring gear side by the control device.
    Type: Application
    Filed: February 21, 2012
    Publication date: February 27, 2014
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Shigehiko Omata, Shigenori Nakazato, Norio Yanagawa, Shingo Kitajima, Atsushi Saeki, Yoshiaki Nagasawa
  • Publication number: 20050168100
    Abstract: To accomplish the above object, this embodiment forms the coil connecting parts 34e on the vertical sections 34d of the commutator segments 34b so that the coil conductors 32a may be assembled axially. On the outer circumference of the coil connecting part 34e, this can form the commutator segments 34b in a body with the lock members 34f that prevent the coil conductor 32a from going out in the centrifugal direction from the coil connecting part 34e. Therefore, the rotating strength (the centrifugal strength) of coil conductors 32a can be improved in the coil connecting part 34e without any additional member for the lock member 34f and without increasing the number of manufacturing steps pertaining to the lock member 34f.
    Type: Application
    Filed: February 1, 2005
    Publication date: August 4, 2005
    Applicants: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Mitsutoshi Abe, Norio Yanagawa, Kimiji Karino
  • Patent number: 6460428
    Abstract: In connection with an intermediate anchoring of a manipulation cable connecting between a manipulation side and an actuation side of an automobile transmission mechanism, an intermediate anchoring bracket 22 of the manipulation cable 4 is provide integral with the starter 2. Specifically, a front bracket 21 of the starter 2, which is attached to a transmission block 1 with a high positional accuracy according to an original purpose of improving engagement between a ring gear 32 and a pinion 23, and the anchoring bracket 22 defining the intermediate anchoring point position of the manipulation cable 4 are formed integral. By merely attaching the starter 2 to the transmission mechanism block 1 with a small number of parts, an accurate positioning of the anchoring bracket 22 with respect to an actuation point 1a is realized, thereby, a positional accuracy between the intermediate anchoring point position and the actuation point 1a can be improved.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: October 8, 2002
    Assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Shigeru Yumiyama, Kazuyuki Mori, Mitsutoshi Abe, Norio Yanagawa
  • Publication number: 20010019983
    Abstract: In connection with an intermediate anchoring of a manipulation cable connecting between a manipulation side and an actuation side of an automobile transmission mechanism, an intermediate anchoring bracket 22 of the manipulation cable 4 is provide integral with the starter 2. Specifically, a front bracket 21 of the starter 2, which is attached to a transmission block 1 with a high positional accuracy according to an original purpose of improving engagement between a ring gear 32 and a pinion 23, and the anchoring bracket 22 defining the intermediate anchoring point position of the manipulation cable 4 are formed integral. By merely attaching the starter 2 to the transmission mechanism block 1 with a small number of parts, an accurate positioning of the anchoring bracket 22 with respect to an actuation point 1a is realized, thereby, a positional accuracy between the intermediate anchoring point position and the actuation point 1a can be improved.
    Type: Application
    Filed: March 2, 2001
    Publication date: September 6, 2001
    Applicant: Hitachi Car Engineering Co., Ltd.
    Inventors: Shigeru Yumiyama, Kazuyuki Mori, Mitsutoshi Abe, Norio Yanagawa