Patents by Inventor Kousuke Maeno

Kousuke Maeno 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).

  • Centrifuge and power controlling apparatus including a voltage switching unit
    Patent number: 9452437
    Abstract: A centrifuge includes a rotor which accommodates a sample, a motor which rotationally drives the rotor and a chiller which cools a rotor chamber, and is provided with a transformer which has a plurality of secondary side taps, converts an AC voltage which is input from a primary side to a plurality of voltages, and outputs, and a voltage switching unit which is connected to the plurality of secondary side taps of the transformer, selects any one of outputs of the secondary side taps, and outputs to the chiller. The microcomputer controls the voltage switching unit corresponding to the power supply frequency which is determined using the output of the zero-crossing detection circuit, and supplies the desired driving voltage to the chiller.
    Type: Grant
    Filed: November 25, 2011
    Date of Patent: September 27, 2016
    Assignee: HITACHI KOKI CO., LTD.
    Inventors: Hidetaka Osawa, Kousuke Maeno, Hiroyuki Takahashi
  • CENTRIFUGE AND POWER CONTROLLING APPARATUS
    Publication number: 20140045669
    Abstract: A centrifuge includes a rotor which accommodates a sample, a motor which rotationally drives the rotor and a chiller which cools a rotor chamber, and is provided with a transformer which has a plurality of secondary side taps, converts an AC voltage which is input from a primary side to a plurality of voltages, and outputs, and a voltage switching unit which is connected to the plurality of secondary side taps of the transformer, selects any one of outputs of the secondary side taps, and outputs to the chiller. The microcomputer controls the voltage switching unit corresponding to the power supply frequency which is determined using the output of the zero-crossing detection circuit, and supplies the desired driving voltage to the chiller.
    Type: Application
    Filed: November 25, 2011
    Publication date: February 13, 2014
    Inventors: Hidetaka Osawa, Kousuke Maeno, Hiroyuki Takahashi