Patents by Inventor Hisao Suka

Hisao Suka 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).

  • Publication number: 20070198110
    Abstract: In an appliance controller 100 for controlling a household electric appliance, a unit information holding part 131 holds unit information identifies a household electric appliance 10, and an operation restriction information holding part 133 can hold operation restriction information indicates operation restrictions to be imposed on the household electric appliance 10. A receiving part 120 receives a forcible control signal transmitted by wireless and demodulates unit information and operation restriction information. A decision part 132 causes the operation restriction information holding part 133 to hold the received operation restriction information when the unit information held in the operation restriction information holding part 133 matches the received unit information. An appliance control part 210 (control computer) controls the operation of the household electric appliance 10 according to the operation restriction information held in the operation restriction information holding part 133.
    Type: Application
    Filed: January 19, 2007
    Publication date: August 23, 2007
    Inventors: Hideaki Suzuki, Makato Kitano, Hisao Suka, Hiroaki Matsushima
  • Patent number: 6661994
    Abstract: An electrophotographic image forming system having a form cassette for storing forms, a transfer unit for forming an image, a feeder for feeding the forms to the transfer unit and a fusing device for fusing transferred image of the form. The electrophotographic image forming system provides in a path for feeding the form with unfused colored particles (toner) deposited thereon, a form guide so as to contact the non-printing area of the surface of the form with unfused colored particles (toner) deposited thereon.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: December 9, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Yoshio Ohuchi, Kazuhiro Wakamatsu, Hisao Suka, Katsumi Kumada, Chikara Hiraoka, Shizuo Tsuruta, Yoshitaro Ishii, Akira Sasaki, Masahiko Saito, Seiji Okunomiya, Tetsunori Kaneko, Masashi Yamamoto
  • Publication number: 20020176726
    Abstract: An electrophotographic image forming system having a form cassette for storing forms, a transfer unit for forming an image, a feeder for feeding the forms to the transfer unit and a fusing device for fusing transferred image of the form. The electrophotographic image forming system provides in a path for feeding the form with unfused colored particles (toner) deposited thereon, a form guide so as to contact the non-printing area of the surface of the form with unfused colored particles (toner) deposited thereon.
    Type: Application
    Filed: July 30, 2002
    Publication date: November 28, 2002
    Inventors: Yoshio Ohuchi, Kazuhiro Wakamatsu, Hisao Suka, Katsumi Kumada, Chikara Hiraoka, Shizuo Tsuruta, Yoshitaro Ishii, Akira Sasaki, Masahiko Saito, Seiji Okunomiya, Tetsunori Kaneko, Masashi Yamamoto
  • Publication number: 20020025201
    Abstract: In order to provide an electrophotographic image forming system characterized by a mechanism of stabilizing the behavior of the tip of the form when the form with unfused colored particles (toner) deposited thereon is fed to the fusing device, the present invention has a form posture correcting protrusion provided on the non-printing area of the surface of the form with unfused colored particles (toner) deposited thereon inside the feed path of the form with unfused colored particles (toner) deposited thereon, so that form behavior can be controlled when the form is fed to the fusing device. Furthermore, the present invention has a form guide provided on the form ejection side of the fusing device to control the behavior of the form moving in the direction of being wound on the fusing roller.
    Type: Application
    Filed: March 9, 2001
    Publication date: February 28, 2002
    Inventors: Yoshio Ohuchi, Kazuhiro Wakamatsu, Hisao Suka, Katumi Kumada, Chikara Hiraoka, Shizuo Tsuruta, Yoshitaro Ishii, Akira Sasaki, Masahiko Saito, Seiji Okunomiya, Tetsunori Kaneko, Masashi Yamamoto
  • Patent number: 6146094
    Abstract: Reduction of air resistance which acts on the conventional motor-driven blower is limited because crushed protrusions are formed on the surface of the plate of the impeller of the conventional motor-driven blower, and this air resistance is a significant impediment to an increase of the operating speed of the motor-driven blower. Thus, an impeller is provided which comprises a front plate having a suction opening, a back plate disposed opposite to the front plate, and a plurality of blades disposed between the front plate and the back plate. At least either the front plate or the back plate is formed integrally with the blades.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: November 14, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Takeshi Obana, Kiyomi Nakamura, Masahisa Inagaki, Yasuhisa Aono, Hisanori Okamura, Hisao Suka, Fumio Jyoraku
  • Patent number: 5381584
    Abstract: A controlling apparatus controls a suction performance of a blower motor which is installed into a cleaner main body. The controlling apparatus increases the suction performance when a suction nozzle is operated and decreases the suction performance when the suction nozzle is stopped. Corresponding to a floor use suction nozzle and a crevice use suction nozzle, at a predetermined air flow amount range, the most suitable operation control being suited to a discriminated suction nozzle can carried out automatically. Plural kinds of the suction nozzles at an actual use scope are set beforehand. When the suction nozzle is exchanged the flow amount range is changed over and selected with a respective suction nozzle. Plural kinds of the suction nozzles are selected and changed over automatically according to the dimension of a change amount of an operation condition. A brushless direct motor is used as the blower motor and has a domain being operated at a chopper control duty of factor 100%.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: January 17, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Fumio Jyoraku, Hisao Suka, Yoshitaro Ishii, Hisanori Toyoshima, Mitsuhisa Kawamata, Haruo Koharagi, Kazuo Tahara, Tunehiro Endo, Kunio Miyashita, Toshiyuki Ajima, Takeshi Abe, Atusi Hosokawa
  • Patent number: 5243732
    Abstract: In a vacuum cleaner, both static pressure H.sub.data and a variation width .DELTA.H in the static pressure appearing when a suction port is operated are detected from a pressure sensor provided at a rear side of a filter within a main body of the vacuum cleaner; a current variation width .DELTA.pbi appearing when the suction port is operated is detected from a current of a nozzel motor for driving a rotary brush stored in a power brush suction port; an air quantity at the suction port is calculated from the current, rotational speed of a fan motor and static pressure; command values are newly obtained by performing a fuzzy calculation with the variation width .DELTA.pbi, static-pressure command value Hcmd; the variation width .DELTA.H and the static-pressure command value Qcmd; the variation width .DELTA.pbi and static-pressure command value Hcmd; and also the variation width .DELTA.
    Type: Grant
    Filed: October 7, 1991
    Date of Patent: September 14, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Haruo Koharagi, Kazuo Tahara, Toshiyuki Ajima, Tsunehiro Endo, Hisao Suka, Mitsuhisa Kawamata, Fumio Jyoraku, Yoshitaro Ishii, Hisanori Toyoshima, Takeshi Abe, Atusi Hosokawa, Shoichi Ito, Motoo Futami, Kunio Miyashita
  • Patent number: 5155885
    Abstract: An output of a electric driven blower in a cleaner main body is controlled in response to a detection value of a pressure sensor which detects an operation condition in the cleaner main body. A change-over level setting value is provided as a control value for the sensor so as to form a judgment point for changing over a control condition of the blower. A return level setting value is provided as a control value for the sensor so as to form a judgment point for returning to a previous control condition of the blower from a changed-over condition of the blower. When the detection value of the sensor is more than the change-over level setting value, the return level setting value is set higher than the change-over setting value, thereby the output of the blower is increased, or the return level setting value is set a lower than the change-over level setting value, thereby the output of the blower is decreased.
    Type: Grant
    Filed: October 3, 1989
    Date of Patent: October 20, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Fumio Jyouraku, Yoshitaro Ishii, Hisao Suka, Kazuo Tahara, Haruo Koharagi
  • Patent number: 4809394
    Abstract: A vacuum cleaner with panel portion structure which includes an improved panel main body and a blower facility valve body. The panel main body has an exhaust air port and an opening for a blower facility. The blower facility valve body is provided at a lower side of the panel main body and is rotatably supported so as to normally shut the blower facility opening. A first exhaust air passage is formed between the intermediate exhaust air port to the main body exhaust air port. A second exhaust air passage is formed between the intermediate exhaust air port to the blower facility opening. The first exhaust air passage and the second exhaust air passage are changed over by the blower facility valve body. The improved blower facility structure permits the development of a series of vacuum cleaners with and without a blower facility.
    Type: Grant
    Filed: August 31, 1987
    Date of Patent: March 7, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Hisao Suka, Akira Iwao, Kazuhiro Kubota, Yoshitaro Ishii, Masao Sunagawa