Patents by Inventor Akitoshi Niibe

Akitoshi Niibe 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: 5679277
    Abstract: A heating body includes a layered structure consisting of a resistive body and a control body, with a meltable insulating sheet therebetween. The control body contains wires which are brought into electrical contact with the resistive body if the temperature of the resistive body exceeds the melting temperature of the insulating sheet. Current flow between the resistive body and the control body is detected to trigger a power cutoff to the resistive body. The material of the insulating sheet is selected to have a melting point well below an ignition temperature of the materials in the heating body, thereby triggering power cutoff at temperatures low enough to prevent fire. A control system normally controls the temperature of the heating body between an upper and a lower limit.
    Type: Grant
    Filed: March 2, 1995
    Date of Patent: October 21, 1997
    Inventors: Akitoshi Niibe, Kinichi Nakagawa
  • Patent number: 4149066
    Abstract: A sheet-like thin flexible heat-emitting surface layer and a coextensive thin flexible serpentine heat-sensing layer are overlayed by thin flexible synthetic plastic sheets which are sealed peripherally. Lead wires from an electrical plug to the heat-emitting layer are interrupted by a controller which is operated by current flowing through the heat sensing layer. Increased heat changes conductivity and current in the heat sensing layer, causing the controller to interrupt or reduce power to the heat-emitting layer.
    Type: Grant
    Filed: November 20, 1975
    Date of Patent: April 10, 1979
    Inventor: Akitoshi Niibe
  • Patent number: 4031356
    Abstract: A heating panel safety system has electrodes on opposite sides of the heating panel which supply conductive material. A first lead wire has ends connected to spaced terminals on a first electrode, and a second lead wire has ends connected to spaced terminals on a second lead wire. Turns in the lead wires are coupled via a core with a turn in a relay energizing wire. Normally closed circuit breaker contacts of the relay are opened when the relay is energized by a bias current in one of the lead wires, such as caused by a discontinuity in an electrode. Opening of the circuit breakers stops flow of current from a power source to the lead wires.
    Type: Grant
    Filed: November 20, 1975
    Date of Patent: June 21, 1977
    Inventor: Akitoshi Niibe