Patents by Inventor Tosiaki Fujiwara

Tosiaki Fujiwara 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).

  • Patent number: 8549701
    Abstract: A vacuum cleaner includes a cleaner body capable of standing and inclining, an electric blower accommodated in the cleaner body, a floor nozzle capable of cleaning a surface while the cleaner body inclines, a mode detector detecting whether the cleaner body stands or inclines, and a controller controlling a power supplied to the electric blower. The controller is operable to supply a first power the electric blower if the mode detector detects that the cleaner body inclines, and to supply a second power lower than the first power to the electric blower if the mode detector detects that the cleaner body stands. This vacuum cleaner prevents the electric blower from overheating.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: October 8, 2013
    Assignee: Panasonic Corporation
    Inventor: Tosiaki Fujiwara
  • Patent number: 8438693
    Abstract: A vacuum cleaner includes a cleaner body capable of standing and inclining, an electric blower accommodated in the cleaner body, a floor nozzle capable of cleaning a surface while the cleaner body inclines, a mode detector detecting whether the cleaner body stands or inclines, and a controller controlling a power supplied to the electric blower. The controller is operable to supply a first power the electric blower if the mode detector detects that the cleaner body inclines, and to supply a second power lower than the first power to the electric blower if the mode detector detects that the cleaner body stands. This vacuum cleaner prevents the electric blower from overheating.
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: May 14, 2013
    Assignee: Panasonic Corporation
    Inventor: Tosiaki Fujiwara
  • Publication number: 20120159734
    Abstract: A vacuum cleaner includes a cleaner body capable of standing and inclining, an electric blower accommodated in the cleaner body, a floor nozzle capable of cleaning a surface while the cleaner body inclines, a mode detector detecting whether the cleaner body stands or inclines, and a controller controlling a power supplied to the electric blower. The controller is operable to supply a first power the electric blower if the mode detector detects that the cleaner body inclines, and to supply a second power lower than the first power to the electric blower if the mode detector detects that the cleaner body stands. This vacuum cleaner prevents the electric blower from overheating.
    Type: Application
    Filed: March 2, 2012
    Publication date: June 28, 2012
    Applicant: Panasonic Corporation
    Inventor: Tosiaki FUJIWARA
  • Publication number: 20100281646
    Abstract: A vacuum cleaner includes a cleaner body capable of standing and inclining, an electric blower accommodated in the cleaner body, a floor nozzle capable of cleaning a surface while the cleaner body inclines, a mode detector detecting whether the cleaner body stands or inclines, and a controller controlling a power supplied to the electric blower. The controller is operable to supply a first power the electric blower if the mode detector detects that the cleaner body inclines, and to supply a second power lower than the first power to the electric blower if the mode detector detects that the cleaner body stands. This vacuum cleaner prevents the electric blower from overheating.
    Type: Application
    Filed: August 30, 2007
    Publication date: November 11, 2010
    Applicant: Panasonic Corporation
    Inventor: Tosiaki Fujiwara
  • Patent number: 7698777
    Abstract: A vacuum cleaner includes an electric blower, an electric blower controller for controlling the electric blower, an electric blower current detector for detecting at least a current flowing in the electric blower, and a dust chamber provided at an upstream of the electric blower, for collecting dust particles sucked by the electric blower. A predetermined level of a current is made to flow in the electric blower regardless of a dust particle amount in the dust chamber. Preferably, the vacuum cleaner further includes voltage detector for detecting a voltage of a power supply applied to the vacuum cleaner. More preferably, the vacuum cleaner further includes a frequency detector for detecting a frequency of a power supply applied to the vacuum cleaner.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: April 20, 2010
    Assignee: Panasonic Corporation
    Inventors: Tosiaki Fujiwara, Hiroshi Nakao, Masaki Takahashi, Nobuhiro Hayasi
  • Publication number: 20070136980
    Abstract: A vacuum cleaner includes an electric blower; an electric blower controller for controlling the electric blower; an electric blower current detector for detecting at least a current flowing in the electric blower; and a dust chamber provided at an upstream of the electric blower, for collecting dust particles sucked by the electric blower. A predetermined level of a current is made to flow in the electric blower regardless of a dust particle amount in the dust chamber. Preferably, the vacuum cleaner further includes voltage detector for detecting a voltage of a power supply applied to the vacuum cleaner. More preferably, the vacuum cleaner further includes a frequency detector for detecting a frequency of a power supply applied to the vacuum cleaner.
    Type: Application
    Filed: February 28, 2006
    Publication date: June 21, 2007
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tosiaki Fujiwara, Hiroshi Nakao, Masaki Takahashi, Nobuhiro Hayasi