Patents by Inventor Akira Sadamoto

Akira Sadamoto 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).

  • Centrifugal fan
    Patent number: 8123468
    Abstract: A centrifugal fan used as a ventilating fan is provided which can increase a range of frequencies of noises in which noises can be suppressed and can adjust frequencies of noises at which noises can be suppressed. The centrifugal fan includes, in an outer casing, a motor that couples an impeller, a casing that surrounds a periphery of the impeller and has a bell-mouthed suction port on one side, and a bell-mouthed orifice that has an opening that is concentric with the suction port and has a diameter equal to or smaller than that of the suction port, wherein a member closing a clearance portion between an end of the orifice and the casing is a noise absorbing structural material, and a space formed by the orifice is a rear air layer, thereby forming a resonance type noise absorbing structure.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: February 28, 2012
    Assignee: Panasonic Corporation
    Inventors: Seiji Shirahama, Kazuo Ogino, Yasuji Tsubakishita, Akira Sadamoto
  • Centrifugal Fan
    Publication number: 20100189547
    Abstract: A centrifugal fan used as a ventilating fan is provided which can increase a range of frequencies of noises in which noises can be suppressed and can adjust frequencies of noises at which noises can be suppressed. The centrifugal fan includes, in an outer casing, a motor that couples an impeller, a casing that surrounds a periphery of the impeller and has a bell-mouthed suction port on one side, and a bell-mouthed orifice that has an opening that is concentric with the suction port and has a diameter equal to or smaller than that of the suction port, wherein a member closing a clearance portion between an end of the orifice and the casing is a noise absorbing structural material, and a space formed by the orifice is a rear air layer, thereby forming a resonance type noise absorbing structure.
    Type: Application
    Filed: October 30, 2007
    Publication date: July 29, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Seiji Shirahama, Kazuo Ogino, Yasuji Tsubakishita, Akira Sadamoto
  • Color image forming apparatus
    Patent number: 6285849
    Abstract: A registering pattern having a predetermined configuration for each color is formed on a transfer material, and color misregistering is detected and corrected by laser beams and a photosensor.
    Type: Grant
    Filed: September 9, 1999
    Date of Patent: September 4, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masaya Shimada, Naomi Uchida, Yuhzoh Kawano, Tadayuki Kajiwara, Tomoyuki Noguchi, Kazuhiko Soeda, Akira Sadamoto