Patents by Inventor Koki HIRATSUKA

Koki HIRATSUKA 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).

  • ROOTS BLOWER
    Publication number: 20230108876
    Abstract: A roots blower includes driving and driven rotors that rotate while intermeshing with each other, driving and driven shafts fixed at the shaft centers of the driving and driven rotors, respectively, a driving gear attached to the end of the driving shaft, a driven gear that is attached to the end of the driven shaft and intermeshes with the driving gear, a rotor chamber that houses the driving and driven rotors, a gear chamber that houses the driving and driven gears, and driving and driven bearings that rotatably support the driving and driven shafts, respectively. The driving and driven gears are lubricated by a grease.
    Type: Application
    Filed: September 23, 2022
    Publication date: April 6, 2023
    Inventors: Tatsuya YAGI, Keisuke HOSHINO, Koki HIRATSUKA