Patents Assigned to Tomoaki Murata
  • High-speed air spindle
    Patent number: 8382426
    Abstract: A high-speed air spindle including a spindle 1 supported by a first bearing 3 at the leading end side in the axial direction and a second bearing 2 at the rear end side, a driving air turbine 4 fixed in a spindle portion between the first bearing 3 and the second bearing 2, a speed-increasing air turbine 5 fixed in a spindle portion ahead of the first bearing 3, and an air passage 9 of an exhaust of compressed air supplied in the driving air turbine 4, flowing in the sequence of the first bearing 3 and the speed-increasing air turbine 5.
    Type: Grant
    Filed: April 4, 2008
    Date of Patent: February 26, 2013
    Assignees: Koushi Itoh, Shinohara Industry Inc., Tomoaki Murata
    Inventors: Koushi Itoh, Hirokatsu Shinohara, Tomoaki Murata