Patents by Inventor Isao Takanashi

Isao Takanashi 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).

  • Apparatus for controlling a variable displacement refrigerant compressor for a car air-conditioner
    Patent number: 4934157
    Abstract: An apparatus for controlling a displacement changing unit of a variable displacement type refrigerant compressor arranged in a car air-conditioner circuit, including a refrigerant evaporator for cooling air for air-conditioning a compartment of a car, is provided with a temperature detecting device for detecting an actual temperature of the air for air-conditioning the car compartment, a temperature setting switch for setting a desired temperature of the air for air-conditioning the car compartment, a unit for generating an electric signal indicating a change in an operating condition of the air blowing fan of the refrigerant evaporator, a control unit for carrying out a PID control to control the operation of the displacement changing unit of the compressor in response to a difference between the actual and desired temperatures and a signal of a unit for generating an electric signal indicating a change in the operating condition of the air blowing fan, to thereby eliminate the difference between the desired
    Type: Grant
    Filed: August 26, 1988
    Date of Patent: June 19, 1990
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Shinichi Suzuki, Isao Takanashi