Patents by Inventor Kenji Egashira

Kenji Egashira 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: 11967750
    Abstract: A low-cost, small-size Wilkinson-type combiner that suppresses the risk of damaging an isolation resistor due to combination loss is provided. The combiner comprises first and second input terminals to which RF signals are input; an output terminal; a wiring line that combines the RF signals input to the first and second input terminals, and outputs the combined signal to the output terminal; an isolation unit provided between the first and second input terminals and formed by a first isolation resistor, a transformer, and a second isolation resistor connected in series; a detection circuit connected to a secondary coil of the transformer and configured to detect a current flowing in the secondary coil; and a determination circuit that outputs a control signal to block input of RF signals to the first and second input terminals if the current flowing in the isolation unit and detected by the detection circuit is higher than or equal to a prescribed value.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: April 23, 2024
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Sunao Egashira, Kenji Nasu, Yuichiro Suenaga, Naoya Fujimoto
  • Patent number: 9752664
    Abstract: An actuator includes M supports to support the rotary shaft, M being an integer equal to or more than 2; and M speed reducers. The Nth support out of the M supports is located at the opposite side of the moving body across the (N?1)th support, N being an integer which is equal to or more than 2 and equal to or less than M. The first speed reducer is connected to the moving body and the first support, receives a movement of the moving body in the axial direction as an input and drives the first support with a reduced drive force that is reduced from the input, and the Nth speed reducer is connected to the (N?1)th support and the Nth support, receives a movement of the (N?1)th support in the axial direction as an input and drives the Nth support with a reduced drive force.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: September 5, 2017
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Motonori Kawauchi, Kenji Egashira, Kouji Kawata
  • Publication number: 20150122062
    Abstract: An actuator includes M supports to support the rotary shaft, M being an integer equal to or more than 2; and M speed reducers. The Nth support out of the M supports is located at the opposite side of the moving body across the (N?1)th support, N being an integer which is equal to or more than 2 and equal to or less than M. The first speed reducer is connected to the moving body and the first support, receives a movement of the moving body in the axial direction as an input and drives the first support with a reduced drive force that is reduced from the input, and the Nth speed reducer is connected to the (N?1)th support and the Nth support, receives a movement of the (N?1)th support in the axial direction as an input and drives the Nth support with a reduced drive force.
    Type: Application
    Filed: October 31, 2014
    Publication date: May 7, 2015
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Motonori KAWAUCHI, Kenji EGASHIRA, Kouji KAWATA
  • Patent number: 5461480
    Abstract: A component recognition system embodying an electronic camera and a lighting arrangement which permits recognition of components carried by a pick-up device either by direct lighting or by back lighting depending upon the size of the and type of the component picked up. This permits the recognition of a large number of different types of components in a single station.
    Type: Grant
    Filed: June 9, 1994
    Date of Patent: October 24, 1995
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Naoji Yamada, Kenji Egashira