Patents by Inventor Masamitsu Usui

Masamitsu Usui 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: 7987680
    Abstract: Between two heat exchangers of a first heat exchanger unit 41 and a second heat exchanger unit 42 included in an indoor heat exchanger 40, an opening 80 is arranged for introducing indoor air sucked from an air inlet 321 into an indoor blower 50 without being heat-exchanged. At the opening 80, a damper 91 is arranged for adjusting the opening rate of the opening 80, which is driven by a predetermined driving member 92. During a cooling cycle running of a freezing cycle, the opening rate of the opening 80 and/or the devices included in the freezing cycle such as a compressor, blower and expansion valve are controlled alone or in combination so that the temperature of the indoor heat exchanger 40 is lower than a dew point temperature of the indoor air.
    Type: Grant
    Filed: October 11, 2006
    Date of Patent: August 2, 2011
    Assignee: Fujitsu General Limited
    Inventors: Mamoru Hamada, Hiroki Igarashi, Atsushi Itagaki, Takafumi Arima, Hiroaki Watanuki, Yoshihiro Sasaki, Masamitsu Usui
  • Publication number: 20070079619
    Abstract: Between two heat exchangers of a first heat exchanger unit 41 and a second heat exchanger unit 42 included in an indoor heat exchanger 40, an opening 80 is arranged for introducing indoor air sucked from an air inlet 321 into an indoor blower 50 without being heat-exchanged. At the opening 80, a damper 91 is arranged for adjusting the opening rate of the opening 80, which is driven by a predetermined driving member 92. During a cooling cycle running of a freezing cycle, the opening rate of the opening 80 and/or the devices included in the freezing cycle such as a compressor, blower and expansion valve are controlled alone or in combination so that the temperature of the indoor heat exchanger 40 is lower than a dew point temperature of the indoor air.
    Type: Application
    Filed: October 11, 2006
    Publication date: April 12, 2007
    Applicant: FUJITSU GENERAL LIMITED
    Inventors: Mamoru Hamada, Hiroki Igarashi, Atsushi Itagaki, Takafumi Arima, Hiroaki Watanuki, Yoshihiro Sasaki, Masamitsu Usui
  • Patent number: 6729154
    Abstract: An air conditioner having a dust removing device which enables dust having stuck to its filters to be automatically removed without fail and prevents the removed dust from sticking again to the filters is to be provided. It is equipped with a sliding device 6 (motor 6) for sliding in a prescribed direction filters 5 arranged between an air intake port 121 and a heat exchanger 3, and with cleaners 7 to remove dust having stuck to the filters 5, automatically cleans the filters 5 and prevents the removed dust from being brought out of the cleaners 7.
    Type: Grant
    Filed: June 19, 2003
    Date of Patent: May 4, 2004
    Assignee: Fujitsu General Limited
    Inventors: Shinsei Takashima, Masamitsu Usui, Hideyuki Umenaka, Yoji Maki
  • Publication number: 20040000160
    Abstract: An air conditioner having a dust removing device which enables dust having stuck to its filters to be automatically removed without fail and prevents the removed dust from sticking again to the filters is to be provided. It is equipped with a sliding device 6 (motor 6) for sliding in a prescribed direction filters 5 arranged between an air intake port 121 and a heat exchanger 3, and with cleaners 7 to remove dust having stuck to the filters 5, automatically cleans the filters 5 and prevents the removed dust from being brought out of the cleaners 7.
    Type: Application
    Filed: June 19, 2003
    Publication date: January 1, 2004
    Applicant: FUJITSU GENERAL LIMITED
    Inventors: Shinsei Takashima, Masamitsu Usui, Hideyuki Umenaka, Yoji Maki