Patents by Inventor Ryou TAKAICHI

Ryou TAKAICHI 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).

  • Exhaust gas purifying device of work machine
    Patent number: 10865680
    Abstract: A reduction in measurement accuracy of a concentration sensor is minimized. An exhaust gas purifying device of a work machine includes a reduction catalyst that is placed in an exhaust flow passage of an exhaust gas of an engine and uses a reducing agent to reduce and purify nitrogen oxides in the exhaust gas, and a reducing agent injector to inject the reducing agent into the exhaust flow passage. The exhaust gas purifying device of a work machine includes: a storage unit that stores the reducing agent; a concentration sensor that has a sensing part placed within the storage unit to detect a concentration of the reducing agent; an air-bubble removal device that injects the reducing agent toward the sensing part; and a reducing agent pump that supplies the reducing agent in the storage unit to the air-bubble removal device.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: December 15, 2020
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Gen Yasuda, Takenori Hiroki, Ryou Takaichi, Hisashi Tago, Hironori Itou
  • Exhaust Gas Purifying Device of Work Machine
    Publication number: 20200256230
    Abstract: A reduction in measurement accuracy of a concentration sensor is minimized. An exhaust gas purifying device of a work machine includes a reduction catalyst that is placed in an exhaust flow passage of an exhaust gas of an engine and uses a reducing agent to reduce and purify nitrogen oxides in the exhaust gas, and a reducing agent injector to inject the reducing agent into the exhaust flow passage. The exhaust gas purifying device of a work machine includes: a storage unit that stores the reducing agent; a concentration sensor that has a sensing part placed within the storage unit to detect a concentration of the reducing agent; an air-bubble removal device that injects the reducing agent toward the sensing part; and a reducing agent pump that supplies the reducing agent in the storage unit to the air-bubble removal device.
    Type: Application
    Filed: October 28, 2016
    Publication date: August 13, 2020
    Inventors: Gen YASUDA, Takenori HIROKI, Ryou TAKAICHI, Hisashi TAGO, Hironori ITOU