Patents by Inventor Eiichi Masushio

Eiichi Masushio 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).

  • Sieving device, sieving device for developing device, and powder-charging device
    Patent number: 8973759
    Abstract: A sieving device including a hollow cylindrical body, a filter disposed at a bottom portion of the hollow cylindrical body, and a blade configured to rotate in close proximity to the filter around a rotation axis thereof crossing the filter to thereby stir powder supplied to the hollow cylindrical body.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: March 10, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Hideo Ichikawa, Kaori Ozeki, Tatsushi Umayahara, Takashi Ono, Masayoshi Suzuki, Teruo Shibata, Keiichi Yano, Masato Suzuki, Eiichi Masushio, Hiroshi Sano, Yusuke Uchida, Junji Yamabe, Seiji Terazawa, Masashi Hasegawa
  • Air classifier
    Patent number: 8668091
    Abstract: An air classifier contains a cylindrical casing provided with at an upper part thereof a feed port to feed high pressure air and a powder material, an umbrella-shaped center core in the casing, and an umbrella-shaped separator core arranged downstream of the center core in the casing and including an opening at center thereof. The air classifier has a configuration containing a dispersion chamber to disperse the powder material, being surrounded by an inner wall of the upper part casing and the center core, and a classification chamber to classify the powder material into fine and coarse powders by centrifugation, being surrounded by the center core, separator core and inner wall of the casing. In the dispersion chamber provided are a louver ring containing guide slats circularly arranged at regular intervals, and a space encircling the louver ring and serving as flow passage of the air and powder material.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: March 11, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Nobuyasu Makino, Eiichi Masushio, Fumitoshi Murakami
  • SIEVING DEVICE, SIEVING DEVICE FOR DEVELOPING DEVICE, AND POWDER-CHARGING DEVICE
    Publication number: 20120234735
    Abstract: A sieving device including a hollow cylindrical body, a filter disposed at a bottom portion of the hollow cylindrical body, and a blade configured to rotate in close proximity to the filter around a rotation axis thereof crossing the filter to thereby stir powder supplied to the hollow cylindrical body.
    Type: Application
    Filed: March 13, 2012
    Publication date: September 20, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Hideo ICHIKAWA, Kaori Ozeki, Tatsushi Umayahara, Takashi Ono, Masayoshi Suzuki, Teruo Shibata, Keiichi Yano, Masato Suzuki, Eiichi Masushio, Hiroshi Sano, Yusuke Uchida, Junji Yamabe, Seiji Terazawa, Masashi Hasegawa
  • AIR CLASSIFIER
    Publication number: 20090206008
    Abstract: An air classifier contains a cylindrical casing provided with at an upper part thereof a feed port to feed high pressure air and a powder material, an umbrella-shaped center core in the casing, and an umbrella-shaped separator core arranged downstream of the center core in the casing and including an opening at center thereof. The air classifier has a configuration containing a dispersion chamber to disperse the powder material, being surrounded by an inner wall of the upper part casing and the center core, and a classification chamber to classify the powder material into fine and coarse powders by centrifugation, being surrounded by the center core, separator core and inner wall of the casing. In the dispersion chamber provided are a louver ring containing guide slats circularly arranged at regular intervals, and a space encircling the louver ring and serving as flow passage of the air and powder material.
    Type: Application
    Filed: February 10, 2009
    Publication date: August 20, 2009
    Inventors: Nobuyasu Makino, Eiichi Masushio, Fumitoshi Murakami