Patents by Inventor Tsutomu Iizuka

Tsutomu Iizuka 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: 5129269
    Abstract: In a meter for an automobile comprising a meter case, a pointer driven by a meter drive unit, a dial plate having a display area and a graduations, characters and patterns display part formed on a base, the dial plate having a ground color providing a background to permit recognition of the position of the pointer, and an illumination lamp located on the rear side of the dial plate mounted in the meter case so as to illuminate the dial plate from the rear side or from the front side through a light guide member, at least one of the display area and the display part of the dial plate is formed by evaporation of a metal film permeable to light.
    Type: Grant
    Filed: May 10, 1990
    Date of Patent: July 14, 1992
    Assignee: Darling-Delaware Company, Inc.
    Inventors: Tsutomu Iizuka, Tatsuo Ikegaya
  • Patent number: 4967181
    Abstract: A fuel level gauge provided with a remaining-amount warning apparatus is arranged so that an indicating needle for indicating the amount of fuel remaining in a fuel tank operates in accordance with a change in the resistance of a resistor device consisting essentially of a resistance plate having a resistor and a sliding element capable of sliding on the resistor in accordance with a liquid level change in the fuel tank. A warning means for issuing a warning when the amount of remaining fuel reaches a predetermined amount also operates by utilizing the resistor device. In such a fuel level gauge, the warning means is activated by a circuit disposed to connect a remaining-amount warning point and the warning means, the remaining-amount warning point being the position on the resistor at which the sliding element is positioned when the amount of remaining fuel reaches a predetermined amount which requires issuance of a warning.
    Type: Grant
    Filed: September 1, 1989
    Date of Patent: October 30, 1990
    Assignee: Yazaki Corporation
    Inventors: Tsutomu Iizuka, Tatsuo Ikegaya