Patents by Inventor Nagahiro HIRASAKA

Nagahiro HIRASAKA 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).

  • Turret device
    Patent number: 9393627
    Abstract: To provide a turret device used for turret-type cleaning machines which allows an improvement in the mounting accuracy of a turret drive shaft, a drive shaft, and a turning center shaft of a turret. A turret device includes: a spindle; a turret mounting the spindle; a spindle drive device; a turret drive device; a turret drive shaft disposed coaxially with a turning center shaft of the turret; a drive shaft coaxially journaled within the turret drive shaft; a first transmission portion transmitting rotation of the turret drive shaft to the turret; a second transmission portion transmitting rotation of the drive shaft to the spindle through a center shaft; and an engaging portion realizing engagement between the center shaft and the spindle when the turret is indexed and releasing the engagement when the turret is turning.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: July 19, 2016
    Assignee: SUGINO MACHINE LIMITED
    Inventors: Nagahiro Hirasaka, Shun Fujita, Takashi Mori
  • TURRET DEVICE
    Publication number: 20150075573
    Abstract: To provide a turret device used for turret-type cleaning machines which allows an improvement in the mounting accuracy of a turret drive shaft, a drive shaft, and a turning center shaft of a turret. A turret device includes: a spindle; a turret mounting the spindle; a spindle drive device; a turret drive device; a turret drive shaft disposed coaxially with a turning center shaft of the turret; a drive shaft coaxially journaled within the turret drive shaft; a first transmission portion transmitting rotation of the turret drive shaft to the turret; a second transmission portion transmitting rotation of the drive shaft to the spindle through a center shaft; and an engaging portion realizing engagement between the center shaft and the spindle when the turret is indexed and releasing the engagement when the turret is turning.
    Type: Application
    Filed: August 26, 2014
    Publication date: March 19, 2015
    Inventors: Nagahiro HIRASAKA, Shun FUJITA, Takashi MORI